I am working with the Stereo Pi Board, and I am trying to build a project which filters colour. I want to create a video feed which can see all colours BUT red hue. When I’ve built this in other systems (unity etc) I use a LUT jpeg to shift the colour spectrum.
I’m new to using Raspberry Pi, but it looks like the -cfx could set a range. The only real information on -cfx I can find is setting to 128:128 for B&W and 100:150 for sepia. I am presuming that the first value is the U of YUV and the second value is the V.
I think, I want to cut diagonally across the U:V colour space keeping a yellow-blue range.
On first testing all I can get is a monochromic colour overlay.
Where can I find more information on how -cfx effects colour? I want to understand how it effects the YUV.
Is there a simpler way to approach this, maybe using a custom white balance, dropping the red/magenta in a tint?