[Elphel-support] Asking the technical help

Tue Nov 15 05:14:31 PST 2011

I never tested it extensively, but it should work. 
As Andrey told you may try and verify with time-stamps that no frames was dropped. 
Best regards, 
Alexandre 

----- Mail original -----

| De: "GuangHai Jin" <gjin at agiltron.com>
| À: "Alexandre Poltorak" <polto at alsenet.com>
| Cc: "Andrey Filippov" <support-list at support.elphel.com>
| Envoyé: Mardi 15 Novembre 2011 13:55:15
| Objet: RE: [Elphel-support] Asking the technical help

| Alex,

| Do you mean we can get the movable ROI (200x200) at 100fps if the
| height (200) of ROI isn’t change as the ROI is moved? We don’t need
| to change the ROI size as tracking the moving target in our
| application.

| Thanks,

| Guanghai

| Dr. Guanghai Jin
| VP of R&D, Chief Scientist
| Phone: 781-935-1200 ext 124
| Fax: 781-935-2040
| Agiltron, Inc
| 15 Presidential Way
| Woburn, MA 01801
| www.agiltron.com

| From: Alexandre Poltorak [mailto:polto at alsenet.com]
| Sent: Tuesday, November 15, 2011 6:28 AM
| To: GuangHai Jin
| Cc: Andrey Filippov
| Subject: Re: [Elphel-support] Asking the technical help

| Hi,

| 250x1936 would not provide such a high frame rate. But you can select
| 320x240 for example. Than you can move this ROI over the sensor area
| and you can even change the ROI width, but keep the height constant.
| This should help to avoid broken frames while moving or changing the
| ROI. The frame rate may change if you change the width of the ROI.

| Best regards,

| Alexandre Poltorak

| ----- Mail original -----

| | De: "GuangHai Jin" <gjin at agiltron.com>
| 
| | À: "Andrey Filippov" <support-list at support.elphel.com>
| 
| | Envoyé: Mardi 15 Novembre 2011 11:26:22
| 
| | Objet: [Elphel-support] Asking the technical help
| 
| | Hi Andrey,
| 

| | I understand you as our company grows up from a small company as
| | well. Thank you very much for your kind help to consult us. I have
| | a
| | few basic questions per your answers.
| 
| | 1) First of all you have to keep the window height constant…...
| 
| | Does it means that the dynamic small window should have the format
| | as
| | X.vs.1936 such as 250x1936 from the 2592x1936 sensor?
| 
| | As the full frame rate of your camera can realize 14fps with JP4
| | raw,
| | does the maximum frame rate might reach up to 140fps approximately
| | for 250x1936 small window?
| 

| | Thanks again,
| 

| | Guanghai
| 
| | Dr. Guanghai Jin
| 
| | VP of R&D, Chief Scientist
| 
| | Phone: 781-935-1200 ext 124
| 
| | Fax: 781-935-2040
| 
| | Agiltron, Inc
| 
| | 15 Presidential Way
| 
| | Woburn, MA 01801
| 
| | www.agiltron.com
| 

| | From: elphel at gmail.com [mailto:elphel at gmail.com] On Behalf Of
| | Andrey
| | Filippov
| 
| | Sent: Monday, November 14, 2011 12:30 PM
| 
| | To: GuangHai Jin; Elphel Support List
| 
| | Subject: Re: [Elphel-support] Asking the technical help
| 

| | Hi Guanghai,
| 

| | We will be happy to consult your engineers, but unfortunately we
| | can
| | not work on such project as a contract job. We are a small company
| | and all our resources are used by our current projects.
| 

| | Andrey
| 

| | On Sat, Nov 12, 2011 at 8:33 AM, GuangHai Jin < gjin at agiltron.com >
| | wrote:
| 

| | Hi Andrey,
| 

| | Thank you so much for your clear explainations. It’s very helpful
| | for
| | me to decide which technical way we will chose. Our engineers will
| | dig in the details by following your instruction. Meanwhile, I am
| | wondering if your company would take this job as a contract for us.
| 

| | Thanks again and have a good weekend,
| 

| | Guanghai
| 

| | Dr. Guanghai Jin
| 
| | VP of R&D, Chief Scientist
| 
| | Phone: 781-935-1200 ext 124
| 
| | Fax: 781-935-2040
| 
| | Agiltron, Inc
| 
| | 15 Presidential Way
| 
| | Woburn, MA 01801
| 
| | www.agiltron.com
| 

| | From: elphel at gmail.com [mailto: elphel at gmail.com ] On Behalf Of
| | Andrey Filippov
| 
| | Sent: Friday, November 11, 2011 1:26 PM
| 
| | To: GuangHai Jin; support-list at support.elphel.com
| 
| | Subject: Re: [Elphel-support] Asking the technical help
| 

| | Hello Jason,
| 

| | I'm sorry - we had a problem with the mailing list and I missed
| | that
| | your previous email.
| 

| | Yes, it is possible to dynamically re-program the small window, to
| | the extend it is supported by the sensor.
| 

| | 1) First of all you have to keep the window height constant -
| | changing it may cause sensor to output bad frame and it will be
| | skipped by the camera.
| 

| | 2) There is a lag between sending the window parameters to the
| | sensor, the output of the new frame and compressing it in the
| | camera
| | (when you get the frame and can analyze the objects there. The
| | camera supports pipeline modification of the parameters, when you
| | provide the new values you also specify to what frame it applies.
| | On
| | the hardware level the parameters are stored in an 8 element
| | circular buffer - the software driver places the new values there
| | and the FPGA code applies them to the compressor and send to the
| | sensor at appropriate time. The default "program ahead" (if you do
| | not specify when the new parameters should be applied) is 3 frames,
| | but you can change that in the php function call.
| 

| | The PHP functions only allow you to program within the capacity of
| | the hardware buffer (up to 5 ahead, as of 8 elements others are
| | kept
| | after the frame), but using parsedit.php - called directly or
| | through autocampars.php you can experiment with other program-ahead
| | times, the software extends the hardware command buffer. The
| | parsedit.php allows you to open 9 (that number can be changed) last
| | images, each image has the image number, timestamp and parameters,
| | so you can verify if any images are lost or corrupted).
| 

| | Andrey
| 

| | On Fri, Nov 11, 2011 at 7:17 AM, GuangHai Jin < gjin at agiltron.com >
| | wrote:
| 

| | Dear Andrey,
| 

| | Best regards,
| 

| | Dr. Guanghai Jin
| 
| | VP of R&D, Chief Scientist
| 
| | Phone: 781-935-1200 ext 124
| 
| | Fax: 781-935-2040
| 
| | Agiltron, Inc
| 
| | 15 Presidential Way
| 
| | Woburn, MA 01801
| 
| | www.agiltron.com
| 

| | From: GuangHai Jin [mailto: gjin at agiltron.com ]
| 
| | Sent: Wednesday, October 05, 2011 11:24 AM
| 
| | To: 'Andrey Filippov'; 'support-list'
| 
| | Subject: [Elphel-support] Problem in using of LiveDVD
| 

| | Hi Andrey,
| 

| | We purchased your network cameras to build our detection system for
| | checking a single object’s lateral motion at a refreshing rate
| | about
| | 10/s. The next goal is to increase the refreshing rate (>100/s) of
| | the object’s position (x, y). My questions are
| 
| | 1) Is it possible to dynamically reconfigure a small date (ex.
| | 320x240) window for high refreshing rate in your network camera
| | around the object as it moves?
| 
| | 2) If “yes” in question 1, could we assign this kind of job to your
| | company as a project contract?
| 
| | 3) Do you have any recommendation?
| 
| | Thank you very much in advance, and looking forward to hearing from
| | you.
| 

| | Dr. Guanghai Jin
| 
| | VP of R&D, Chief Scientist
| 
| | Phone: 781-935-1200 ext 124
| 
| | Fax: 781-935-2040
| 
| | Agiltron, Inc
| 
| | 15 Presidential Way
| 
| | Woburn, MA 01801
| 
| | www.agiltron.com
| 

| | From: Jason Chen [mailto: jianzhong_chen at agiltron.com.cn ]
| 
| | Sent: Thursday, September 15, 2011 6:35 AM
| 
| | To: Andrey Filippov; support-list
| 
| | Cc: jianhuiye; GuangHai Jin
| 
| | Subject: Re: Re: Re: [Elphel-support] Problem in using of LiveDVD
| 

| | Hi, Andrey,
| 

| | This time I removed the "sudo" from the front of "netboot", it
| | looks
| | like program ran some but I'm not sure if the camera is OK now.
| 

| | Regards
| 

| | Jason Chen
| 

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| 
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| 
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| 
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| 
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