Directly read Bayer10 data from imx219 CSI-2

Autonomous Machines Jetson & Embedded Systems Jetson Nano
#1

Hello,

I would like to directly read CSI-2 data from the IMX219 sensor.
I’d like to do some quick/simple processing of the data in chunks using the CPU and hand off the results to the GPU for further/parallel processing.

I don’t want to wait until the image has been fully read before I start processing it. Ain’t nobody got time for that.

What API should I use to do this?
Some ‘hello world’ code would be nice :-)

Thanks!

#2

You can get the raw data via the video-4-linux API but you will still get the whole frame, not “chunks”. There is no way to somehow process the CSI-2 stream by yourself.

#3

I note the raspiraw github repo shows how to capture at 655fps (640x128 resolution - so a snippet of the image).
https://github.com/6by9/raspiraw

Will the v4l2 API let me capture high frame rate snippets of the image like this?

Thanks!

#4

You can modify the imx219 device tree and driver to add a 640x128 resolution. This way you should get the same frame rate.