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JetsonHacksNano / buildOpenCV

Scripts for build OpenCV on the NVIDIA Jetson Nano Developer Kit
MIT License
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500 ms camera lag #10

Closed RotorBoy2020 closed 3 years ago

RotorBoy2020 commented 3 years ago

Hello- long time listener, first time caller.

I am using your build script on my Jetson Nano with a raspberry Pi 2 camera, and have noticed about 500 ms of lag between real life and the camera feed. I have seen others discussing the issue, but have not seen solutions posted thus far so I figured I'd open this as an issue.

Any suggestions on what to tweak in order to bring the camera lag back down to what is was previously (which was the default opencv 4 that came with the Jeston Nano)? The default imshow window viewer seems to be different between the two versions, this could be one possible reason for the lag?

Thank you for your help

RotorBoy2020 commented 3 years ago

Update:

I went through the build script and just started switching off build options that I didn't need. I ended up turning off: CUBLAS, LIBV4L, V4L, QT, and OPENGL. This has resolved my latency issue.

Hope this helps someone else.