Custom RGB color filter in 3.1 [closed]

asked 2016-11-11 23:41:41 -0600

Qix gravatar image

I'm using version 3.1 and need to perform an RGB operation on an image and output a greyscale image. I know OpenCV uses kernels for things but since BaseFilter was privatized in 3.1 (why?..) it is no longer a trivial thing to do.

How would one do this with OpenCV? I've seen several threads saying you can't, but I sincerely hope that's not the case as that really limits the usefulness of this library for us.

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Closed for the following reason question is not relevant or outdated by sturkmen
close date 2020-10-07 16:40:26.864026

Comments

Run each channel separately and add the results?

Tetragramm gravatar imageTetragramm ( 2016-11-12 11:48:31 -0600 )edit

I need to relate the channels to each other. I can't separate the channels.

Qix gravatar imageQix ( 2016-11-12 18:31:58 -0600 )edit

How do they relate that isn't handled by a multiply or an add? And if it isn't, how would a kernel do that work?

Tetragramm gravatar imageTetragramm ( 2016-11-12 21:40:38 -0600 )edit
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