[Elphel-support] video camera for drone project

[Elphel Support]

Hello Maria,

Our prices are all on the web  - http://www3.elphel.com/importwiki?title=Price_list . We can send you a specific quote for the custom configuration.
I believe our camera can provide the absolute minimal latency and it is not so difficult to save almost a full frame time (~30ms) with some C programming - FPGA already supports this operation. In that case compressed data will be send out almost immediately (~1 ms latency), not waiting for the whole frame even to leave the image sensor.

So if the latency is the most critical parameter - we can provide it :-)

Andrey


---- On Fri, 16 Jun 2017 13:05:37 -0700 Maria Gonzalez<margonzalez at ucdavis.edu> wrote ---- 

Thanks for the info.  I will report to the group. What we have in mind is a real time game where we add some virtual elements to the video transmitted by the drone and the user will see the combined video in the goggles. For that reason, in addition of having a good quality video, the latency is critical which is determined by the transmission.  In the meantime, can you give us some estimate of the cost of the camera type/communications scheme to determine if it is in our budget. We need to evaluate our options .


Maria C. Gonzalez


On Thu, Jun 15, 2017 at 4:11 PM, Oleg <support-list at support.elphel.com> wrote:
Maria,

We conducted a few tests to measure the live stream latency.


Results:
* Test images
* For 1080p - ~70ms from exposure to display (720p - ~50ms). 


So, having in mind 40ms (sensor readout + compression) - it takes about 30ms to transfer and display the stream (for the pc used in tests)


Notes:
* LAN: PC and camera only, 1GigE
* Played rtsp and multipart jpeg streams
* Used gstreamer - as it performed the fastest among other players/browsers.
** Chrome and Firefox seem to buffer at least 1 frame when displaying mjpeg stream = extra lag.


Best regards,
Oleg Dzhimiev
Electronics Engineer
phone: +1 801 783 5555 x124
Elphel, Inc.
 

 


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