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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Batang",serif;color:#1F497D">Hi, Andrey<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Batang",serif;color:#1F497D"> Thank you very much. I will set the compression quality to 100 and 98, and test it.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Batang",serif;color:#1F497D"><o:p> </o:p></span></p>
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<span lang="EN-US" style="font-size:10.5pt;font-family:等线;color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="text-align:justify;text-justify:inter-ideograph"><span lang="EN-US" style="font-size:10.5pt;font-family:等线;color:#1F497D">
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify;text-justify:inter-ideograph"><b><span lang="EN-US" style="font-size:10.5pt;font-family:等线;color:#1F497D">Best Regrad!<o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-align:justify;text-justify:inter-ideograph"><b><span lang="EN-US" style="font-size:10.5pt;font-family:等线;color:#1F497D">Yicheng-Zhang<o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-align:justify;text-justify:inter-ideograph"><b><span lang="EN-US" style="font-size:10.5pt;font-family:等线;color:#1F497D">Email: winston.zhang@blacksesame.com.cn<o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-align:justify;text-justify:inter-ideograph"><b><span lang="EN-US" style="font-size:10.5pt;font-family:等线;color:#1F497D">Teil: 18516291005<o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-align:justify;text-justify:inter-ideograph"><b><span lang="EN-US" style="font-size:10.5pt;font-family:等线;color:#1F497D">Addr: 707 room,
</span></b><b><span lang="EN-US" style="font-size:10.5pt;font-family:等线;color:#1F497D;background:#EEF0F2">7th floor, building 4th, No.1761, Zhangdong road, Pudong area</span></b><b><span lang="EN-US" style="font-size:10.5pt;font-family:等线;color:#1F497D"><o:p></o:p></span></b></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Batang",serif;color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:等线">发件人<span lang="EN-US">:</span></span></b><span lang="EN-US" style="font-size:11.0pt;font-family:等线"> Andrey Filippov [mailto:andrey@elphel.com]
<br>
</span><b><span style="font-size:11.0pt;font-family:等线">发送时间<span lang="EN-US">:</span></span></b><span lang="EN-US" style="font-size:11.0pt;font-family:等线"> 2018</span><span style="font-size:11.0pt;font-family:等线">年<span lang="EN-US">3</span>月<span lang="EN-US">7</span>日
星期三<span lang="EN-US"> 13:58<br>
</span><b>收件人<span lang="EN-US">:</span></b><span lang="EN-US"> Tao Zhang <tao.zhang@blacksesame.com.cn><br>
</span><b>抄送<span lang="EN-US">:</span></b><span lang="EN-US"> Winston Zhang <winston.zhang@blacksesame.com.cn>; Elphel Support <support-list@support.elphel.com>; Elphel Sales | Olga Filippova <sales@elphel.com>; Qun Gu <qun.gu@blacksesame.com>; Pioneer Li
<pioneer.li@blacksesame.com.cn><br>
</span><b>主题<span lang="EN-US">:</span></b><span lang="EN-US"> Re: </span>答复<span lang="EN-US">: [Elphel-support]
</span>答复<span lang="EN-US">: </span>答复<span lang="EN-US">: </span>答复<span lang="EN-US">: sync stereo with lidar<o:p></o:p></span></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Hello Winston,<br>
<br>
You may set compression quality to 100% and there will be no quantization, compression itself will be lossless (in regular JPEG most of the image degradation is related to de-mosaic). There will still be gamma conversion that introduces loss, but it is less
than the sensor natural shot noise as it is explained in the article I gave you a link to. Image acquisition is a noisy process - if you acquire twice the same scene they will never be bit-to-bit equal, so there is not much sense to preserve each noise value.
You only need lossless compression when editing images, especially if you save/load them many times - even small errors would accumulate.<br>
<br>
JP4 was developed for Google Books and later also used for Street View - it provides some compression while keeping RMS error under under 1 output count, so there will be no measurable improvement in 3d reconstruction.<br>
<br>
I would recommend to use compression quality 97-98% (as we do) - it provides very good quality and still compresses 5MPix images to ~2MB in size. You may compare 100% and 98% quality images yourself.<br>
<br>
Andrey<o:p></o:p></span></p>
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---- On Tue, 06 Mar 2018 21:33:39 -0800 <b>Tao Zhang<<a href="mailto:tao.zhang@blacksesame.com.cn">tao.zhang@blacksesame.com.cn</a>></b> wrote ----
<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.5pt;font-family:"Verdana",sans-serif">Hi Andrey,</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.5pt;font-family:"Verdana",sans-serif">I think the JP4 image is lossy compressed. The block is cause by that. Is there a way to get lossless
images?</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.5pt;font-family:"Verdana",sans-serif">Thanks.</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.5pt;font-family:"Verdana",sans-serif"> </span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;text-justify:inter-ideograph">
<span lang="EN-US" style="font-size:10.5pt;font-family:"Verdana",sans-serif">Tao Zhang</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;text-justify:inter-ideograph">
<span style="font-size:10.5pt">章</span><span lang="EN-US" style="font-size:10.5pt;font-family:"Verdana",sans-serif">
</span><span style="font-size:10.5pt">涛</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.5pt;font-family:"Verdana",sans-serif"> </span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:11.0pt">发件人</span></b><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">
Winston Zhang <br>
</span><b><span style="font-size:11.0pt">发送时间</span></b><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif"> 2018</span><span style="font-size:11.0pt">年</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">3</span><span style="font-size:11.0pt">月</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">7</span><span style="font-size:11.0pt">日</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">
13:12<br>
</span><b><span style="font-size:11.0pt">收件人</span></b><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif"> Andrey Filippov <<a href="mailto:andrey@elphel.com" target="_blank">andrey@elphel.com</a>><br>
</span><b><span style="font-size:11.0pt">抄送</span></b><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif"> Elphel Support <<a href="mailto:support-list@support.elphel.com" target="_blank">support-list@support.elphel.com</a>>;
Elphel Sales | Olga Filippova <<a href="mailto:sales@elphel.com" target="_blank">sales@elphel.com</a>>; Tao Zhang <<a href="mailto:tao.zhang@blacksesame.com.cn" target="_blank">tao.zhang@blacksesame.com.cn</a>>; Qun Gu <<a href="mailto:qun.gu@blacksesame.com" target="_blank">qun.gu@blacksesame.com</a>>;
Pioneer Li <<a href="mailto:pioneer.li@blacksesame.com.cn" target="_blank">pioneer.li@blacksesame.com.cn</a>><br>
</span><b><span style="font-size:11.0pt">主题</span></b><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">
</span><span style="font-size:11.0pt">答复</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">: [Elphel-support]
</span><span style="font-size:11.0pt">答复</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">:
</span><span style="font-size:11.0pt">答复</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">:
</span><span style="font-size:11.0pt">答复</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">: sync stereo with lidar</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Hi, Andrey<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> Please take a look at attachments. The rawJP4 image was captured from the camera, and I converted
it and got the result as result.png. But when I magnified this image, I found some block included 16x16 grid. I did not know the reason. Can you explain it.(The grid image please take look at grid.png).<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> Another question is that the result image is single channel but not three channel like as rgb-channel.
But if I converted it through the jp4viewer, the result is color image. Why? How do you do this?<o:p></o:p></span></p>
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<span lang="EN-US" style="font-size:10.5pt;font-family:"Verdana",sans-serif;color:#1F497D"> </span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;text-justify:inter-ideograph">
<span lang="EN-US" style="font-size:10.5pt;font-family:"Verdana",sans-serif;color:#1F497D">
</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<b><span lang="EN-US" style="font-size:10.5pt;font-family:"Verdana",sans-serif;color:#1F497D">Best Regrad!</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;text-justify:inter-ideograph">
<b><span lang="EN-US" style="font-size:10.5pt;font-family:"Verdana",sans-serif;color:#1F497D">Yicheng-Zhang</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<b><span lang="EN-US" style="font-size:10.5pt;font-family:"Verdana",sans-serif;color:#1F497D">Email:
<a href="mailto:winston.zhang@blacksesame.com.cn" target="_blank">winston.zhang@blacksesame.com.cn</a></span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<b><span lang="EN-US" style="font-size:10.5pt;font-family:"Verdana",sans-serif;color:#1F497D">Teil: 18516291005</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;text-justify:inter-ideograph">
<b><span lang="EN-US" style="font-size:10.5pt;font-family:"Verdana",sans-serif;color:#1F497D">Addr: 707 room,
<span style="background:#EEF0F2">7th floor, building 4th, No.1761, Zhangdong road, Pudong area</span></span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:11.0pt">发件人</span></b><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">
Andrey Filippov [<a href="mailto:andrey@elphel.com" target="_blank">mailto:andrey@elphel.com</a>]
<br>
</span><b><span style="font-size:11.0pt">发送时间</span></b><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif"> 2018</span><span style="font-size:11.0pt">年</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">3</span><span style="font-size:11.0pt">月</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">6</span><span style="font-size:11.0pt">日</span><span style="font-size:11.0pt;font-family:"Verdana",sans-serif">
</span><span style="font-size:11.0pt">星期二</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif"> 15:58<br>
</span><b><span style="font-size:11.0pt">收件人</span></b><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif"> Winston Zhang <<a href="mailto:winston.zhang@blacksesame.com.cn" target="_blank">winston.zhang@blacksesame.com.cn</a>><br>
</span><b><span style="font-size:11.0pt">抄送</span></b><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif"> Elphel Support <<a href="mailto:support-list@support.elphel.com" target="_blank">support-list@support.elphel.com</a>>;
Elphel Sales | Olga Filippova <<a href="mailto:sales@elphel.com" target="_blank">sales@elphel.com</a>>; Tao Zhang <<a href="mailto:tao.zhang@blacksesame.com.cn" target="_blank">tao.zhang@blacksesame.com.cn</a>>; Qun Gu <<a href="mailto:qun.gu@blacksesame.com" target="_blank">qun.gu@blacksesame.com</a>>;
Pioneer Li <<a href="mailto:pioneer.li@blacksesame.com.cn" target="_blank">pioneer.li@blacksesame.com.cn</a>><br>
</span><b><span style="font-size:11.0pt">主题</span></b><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif"> Re: [Elphel-support]
</span><span style="font-size:11.0pt">答复</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">:
</span><span style="font-size:11.0pt">答复</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">:
</span><span style="font-size:11.0pt">答复</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Verdana",sans-serif">: sync stereo with lidar</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Winston,<br>
<br>
There are several ways how to set the JP4 mode:<br>
<br>
1) set it from the camera GUI (click Camera Control Interface port #), then click camera icon (top left), then "More details" and select color mode to jp4.<br>
2) set with "Parameter Editor": follow Parameter Editor from the home page, check bit 2 - "Image color, quality ..." -> "View/Edit Current", set "COLOR: line New value to 5 (it is jp4) and click "Apply" button.<br>
3) make this mode default(after either 1) or 2) )- save current settings in "Parameter Editor" (previous page) - Press topmost "Save" button (you may later change comments for the settings). Then you may set saved settings as default (select it and then press
"Update default"). Next time you start the camera it will use these settings.<br>
Then repeat the same for the other channel.<br>
<br>
Andrey<o:p></o:p></span></p>
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---- On Mon, 05 Mar 2018 01:46:22 -0800 <b>Winston Zhang<<a href="mailto:winston.zhang@blacksesame.com.cn" target="_blank">winston.zhang@blacksesame.com.cn</a>></b> wrote ----
<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Hello, Andrey,<o:p></o:p></span></p>
<div style="border:solid #DDDDDD 1.0pt;padding:12.0pt 12.0pt 12.0pt 12.0pt">
<pre style="line-height:15.6pt;background:#F9F9F9"><span lang="EN-US"> I need information inside camera. How can I get jp4 format image? What is the image default format? If I try the command line “wget <a href="http://192.168.0.9:2323/img%20-O%20filename.jp4" target="_blank">http://192.168.0.9:2323/img -O filename.jp4</a>”, Can I get the jp4 format Image?<o:p></o:p></span></pre>
<pre style="line-height:15.6pt;background:#F9F9F9"><span lang="EN-US"> Thank you!<o:p></o:p></span></pre>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">”<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p>
</o:p></span></p>
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<b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Best Regrad!</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;text-justify:inter-ideograph">
<b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Yicheng-Zhang</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Email:
<a href="mailto:winston.zhang@blacksesame.com.cn" target="_blank">winston.zhang@blacksesame.com.cn</a></span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Teil: 18516291005</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;text-justify:inter-ideograph">
<b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Addr: 707 room,
<span style="background:#EEF0F2">7th floor, building 4th, No.1761, Zhangdong road, Pudong area</span></span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:11.0pt">发件人</span></b><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">
Andrey Filippov [mailto:<a href="mailto:andrey@elphel.com" target="_blank">andrey@elphel.com</a>]
<br>
</span><b><span style="font-size:11.0pt">发送时间</span></b><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> 2018</span><span style="font-size:11.0pt">年</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">3</span><span style="font-size:11.0pt">月</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">2</span><span style="font-size:11.0pt">日</span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">
</span><span style="font-size:11.0pt">星期五</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> 10:47<br>
</span><b><span style="font-size:11.0pt">收件人</span></b><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> Winston Zhang <<a href="mailto:winston.zhang@blacksesame.com.cn" target="_blank">winston.zhang@blacksesame.com.cn</a>>;
Elphel Support <<a href="mailto:support-list@support.elphel.com" target="_blank">support-list@support.elphel.com</a>><br>
</span><b><span style="font-size:11.0pt">抄送</span></b><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> Tao Zhang <<a href="mailto:tao.zhang@blacksesame.com.cn" target="_blank">tao.zhang@blacksesame.com.cn</a>>;
Elphel Support <<a href="mailto:support-list@support.elphel.com" target="_blank">support-list@support.elphel.com</a>>; Elphel Sales | Olga Filippova <<a href="mailto:sales@elphel.com" target="_blank">sales@elphel.com</a>>; Qun Gu <<a href="mailto:qun.gu@blacksesame.com" target="_blank">qun.gu@blacksesame.com</a>>;
Pioneer Li <<a href="mailto:pioneer.li@blacksesame.com.cn" target="_blank">pioneer.li@blacksesame.com.cn</a>><br>
</span><b><span style="font-size:11.0pt">主题</span></b><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> Re:
</span><span style="font-size:11.0pt">答复</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">:
</span><span style="font-size:11.0pt">答复</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">: [Elphel-support] sync stereo with lidar<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Hello Winston,<br>
<br>
Do you need information inside camera or for post-processing on a host PC?<br>
<br>
Sensor has 12 bits, and using JP4 format (<a href="https://wiki.elphel.com/wiki/JP4" target="_blank">https://wiki.elphel.com/wiki/JP4</a>) you can restore image data with the error less than the pixel shot noise<br>
<br>
Here is an article explaining why it is so:<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><a href="http://linuxdevices.io/how-many-bits-are-really-needed-in-the-image-pixels/" target="_blank">http://linuxdevices.io/how-many-bits-are-really-needed-in-the-image-pixels/</a><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">With ImageJ plugin you can convert JP4 file to 32-bit TIFF<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Andrey<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">---- On Thu, 01 Mar 2018 17:17:14 -0800
<b>Winston Zhang<<a href="mailto:winston.zhang@blacksesame.com.cn" target="_blank">winston.zhang@blacksesame.com.cn</a>></b> wrote ----
<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Hello,<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> Does this camera image pixel have 10 bit of the single channel? And how can I get it? Thank you.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p>
</o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;text-justify:inter-ideograph">
<b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Best Regrad!</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;text-justify:inter-ideograph">
<b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Yicheng-Zhang</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;text-justify:inter-ideograph">
<b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Email:
<a href="mailto:winston.zhang@blacksesame.com.cn" target="_blank">winston.zhang@blacksesame.com.cn</a></span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;text-justify:inter-ideograph">
<b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Teil: 18516291005</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;text-justify:inter-ideograph">
<b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Addr: 707 room,
<span style="background:#EEF0F2">7th floor, building 4th, No.1761, Zhangdong road, Pudong area</span></span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:11.0pt">发件人</span></b><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">
Andrey Filippov [mailto:<a href="mailto:andrey@elphel.com" target="_blank">andrey@elphel.com</a>]
<br>
</span><b><span style="font-size:11.0pt">发送时间</span></b><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> 2018</span><span style="font-size:11.0pt">年</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">2</span><span style="font-size:11.0pt">月</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">1</span><span style="font-size:11.0pt">日</span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">
</span><span style="font-size:11.0pt">星期四</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> 13:49<br>
</span><b><span style="font-size:11.0pt">收件人</span></b><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> Tao Zhang <<a href="mailto:tao.zhang@blacksesame.com.cn" target="_blank">tao.zhang@blacksesame.com.cn</a>><br>
</span><b><span style="font-size:11.0pt">抄送</span></b><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> Elphel Support <<a href="mailto:support-list@support.elphel.com" target="_blank">support-list@support.elphel.com</a>>;
Elphel Sales | Olga Filippova <<a href="mailto:sales@elphel.com" target="_blank">sales@elphel.com</a>>; Winston Zhang <<a href="mailto:winston.zhang@blacksesame.com.cn" target="_blank">winston.zhang@blacksesame.com.cn</a>>; Qun Gu <<a href="mailto:qun.gu@blacksesame.com" target="_blank">qun.gu@blacksesame.com</a>>;
Pioneer Li <<a href="mailto:pioneer.li@blacksesame.com.cn" target="_blank">pioneer.li@blacksesame.com.cn</a>><br>
</span><b><span style="font-size:11.0pt">主题</span></b><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> Re:
</span><span style="font-size:11.0pt">答复</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">: [Elphel-support] sync stereo with lidar<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Tao,<br>
<br>
USB GPS does not have 1pps signal (only serial has), precise synchronization is not possible that way. GPS time is available in each frame Exif header data - recorded on internal SSD or sent over the network.<br>
<br>
The high resolution time stamps (1 microsecond step) are also provided with each image, but they use internal camera clock, not the GPS.<br>
<br>
This is why for precise synchronization you need to use event logger- it records events and timestamps them using the same clock.<br>
<br>
If you had serial GPS with <a href="https://wiki.elphel.com/wiki/103696" target="_blank">
https://wiki.elphel.com/wiki/103696 </a>- you would still need to use event logger - with serial GPS there will be 1 PPS precise GPS events timestamped with camera internal clock, and the images timestamped wit the same clock - that provides absolute calibration
for the camera internal clock.<br>
<br>
Without serial GPS you may use pulses from the LIDAR (it is possible to provide LIDAR pulse number over the Ethernet in addition to the precise time over the sync cable)<br>
<br>
Andrey<o:p></o:p></span></p>
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---- On Wed, 31 Jan 2018 18:12:00 -0800 <b>Tao Zhang<<a href="mailto:tao.zhang@blacksesame.com.cn" target="_blank">tao.zhang@blacksesame.com.cn</a>></b> wrote ----
<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Hi Andrey,<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">We prefer to use GPS to synchronize stereo with lidar.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Where do those images that contain timestamp store in internal disk? Can we get it from ethernet continuously?<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;text-justify:inter-ideograph">
<span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Tao Zhang<o:p></o:p></span></p>
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<span style="font-size:10.5pt">章</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">
</span><span style="font-size:10.5pt">涛</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:11.0pt">发件人</span></b><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">
Andrey Filippov [mailto:<a href="mailto:andrey@elphel.com" target="_blank">andrey@elphel.com</a>]
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</span><b><span style="font-size:11.0pt">发送时间</span></b><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> 2018</span><span style="font-size:11.0pt">年</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">2</span><span style="font-size:11.0pt">月</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">1</span><span style="font-size:11.0pt">日</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">
1:52<br>
</span><b><span style="font-size:11.0pt">收件人</span></b><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> Tao Zhang <<a href="mailto:tao.zhang@blacksesame.com.cn" target="_blank">tao.zhang@blacksesame.com.cn</a>><br>
</span><b><span style="font-size:11.0pt">抄送</span></b><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> Elphel Support <<a href="mailto:support-list@support.elphel.com" target="_blank">support-list@support.elphel.com</a>>;
Elphel Sales | Olga Filippova <<a href="mailto:sales@elphel.com" target="_blank">sales@elphel.com</a>>; Winston Zhang <<a href="mailto:winston.zhang@blacksesame.com.cn" target="_blank">winston.zhang@blacksesame.com.cn</a>>; Qun Gu <<a href="mailto:qun.gu@blacksesame.com" target="_blank">qun.gu@blacksesame.com</a>>;
Pioneer Li <<a href="mailto:pioneer.li@blacksesame.com.cn" target="_blank">pioneer.li@blacksesame.com.cn</a>><br>
</span><b><span style="font-size:11.0pt">主题</span></b><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> Re: [Elphel-support] sync stereo
with lidar<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Hi Tao,<br>
<br>
There are several ways how to do that:<br>
One method would be be to get camera sync pulses for each frame and use external electronics to match with the LIDAR.<br>
Another is to provide pulses from the LIDAR to the camera and record them with in-camera FPGA logger (<a href="https://wiki.elphel.com/wiki/Event_logger" target="_blank">https://wiki.elphel.com/wiki/Event_logger</a>), together with the camera frames. In this
case the camera will record 2 types of events:<br>
- image frames with the frame number, frame timestamp that will be recorded in each frame header as Exif.<br>
- external pulse<br>
Each of the two types of events will have a logger timestamp (with microsecond resolution). Logger can also record GPS timestamps (for serial GPS only and 103696 board -<a href="https://wiki.elphel.com/wiki/103696" target="_blank">https://wiki.elphel.com/wiki/103696</a>)
and IMU (<a href="https://wiki.elphel.com/wiki/103695" target="_blank">https://wiki.elphel.com/wiki/103695</a>), in your case there are just 2 types listed above.<br>
<br>
Both output (+5V pulses) and input (3.3V..5.0V) are available through the 2.5mm audio connector (marked "sync"
<a href="https://wiki.elphel.com/images/0/0f/NC393-CS_marked_ports.jpeg" target="_blank">
https://wiki.elphel.com/images/0/0f/NC393-CS_marked_ports.jpeg</a> ), here is the pinout and description:
<a href="https://wiki.elphel.com/wiki/103891" target="_blank">https://wiki.elphel.com/wiki/103891</a> .<br>
<br>
Andrey<o:p></o:p></span></p>
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---- On Wed, 31 Jan 2018 04:19:04 -0800 <b>Tao Zhang<<a href="mailto:tao.zhang@blacksesame.com.cn" target="_blank">tao.zhang@blacksesame.com.cn</a>></b> wrote ----
<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Hi Andrey,<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">We are going to use stereo with lidar. We need to sync stereo frames with lidar point cloud. Do you
have any suggestions on how to do that?<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Thanks.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;text-justify:inter-ideograph">
<span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">Tao Zhang<o:p></o:p></span></p>
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<span style="font-size:10.5pt">章</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">
</span><span style="font-size:10.5pt">涛</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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