What is the best way to make video monochrome?

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
1

Hi Guys,

I’m using nvgstcapture / gstreamer to stream a camera feed from a MIPI CSI camera.
What is the best way of converting the color stream into monochrome?

Thanks
Lasse R.

2

With gstreamer, you would convert into GRAY8 or GRAY16.
You may try these:

gst-launch-1.0 videotestsrc ! video/x-raw, format=BGR ! videoconvert ! video/x-raw, format=GRAY8 ! videoconvert ! xvimagesink
#or
gst-launch-1.0 videotestsrc ! video/x-raw, format=BGR ! videoconvert ! video/x-raw, format=GRAY16_LE ! videoconvert ! xvimagesink
3

Thanks !!
I will try this

Yours truly
Lasse

4

Hi @Honey_Patouceul

I tried it and it works however the performance is very sluggish (the camera is lagging) is there a way to do this in hardware somehow?

Thanks
Lasse

5

It may depend on your sensor and how you get frames.
I have checked that 1080p @30 fps works fine from nvarguscamerasrc on AGX Xavier with R32.4.2:

gst-launch-1.0 nvarguscamerasrc ! 'video/x-raw(memory:NVMM),format=NV12, width=1920,height=1080,framerate=30/1' ! nvvidconv ! video/x-raw, format=GRAY8 ! videoconvert ! fpsdisplaysink video-sink=xvimagesink