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Contributor
Contributor
371 Views
Registered: ‎03-04-2017

Saving output of processed real time video

Hello, I am able to run HLS based sobel edge detector IP core on my ZC702 board. Now I want to save the edge detected output for further analysis say for finding how accurately the edge detector is working. My input is now not from camera but I am using HDMI pass through implementation. What are the possible techniques to save the processed frames for further offline analysis of result. 

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3 Replies
Scholar u4223374
Scholar
333 Views
Registered: ‎04-26-2015

Re: Saving output of processed real time video

The standard approach would be to use something like the AXI Stream Broadcaster to get a second copy of your data stream, and feed that copy to an AXI VDMA block. The VDMA block can write that to the PS DDR RAM, and from there you can have the CPU write it to the SD card or a USB drive.

 

I suspect that you won't be able to do the whole process in real-time, at least for large-ish (eg. 1920x1080) frames - you won't be able to put data onto the SD card that fast. However, you can have it write maybe 50 frames to RAM (easy to do in real-time), then stop the stream and write the stored data to the SD card.

Contributor
Contributor
324 Views
Registered: ‎03-04-2017

Re: Saving output of processed real time video

Thank you for your reply. Can you suggest any example small design which is doing this process.

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Scholar watari
Scholar
295 Views
Registered: ‎06-16-2013

Re: Saving output of processed real time video

Hi @nidhipanda15

 

Would you use video capture card on Win PC ?

It is easy way to record real time video signal.

 

Best regards,

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