Re: Advice on "Matrix Metering" for Cams ?

On Sun, 4 May 2025 01:24:21 -0400, c186282 wrote:

SO ... wrote a little app that breaks the images into a 7x5 matrix and
yields 'average brightness'
figures for each segment ... the basic of 'matrix metering'.

That's sort of like pooling in a convolutional neural network. The image
is broken into 2x2 or similar and either the maximum or the average for
the square is used for the next layer. It's interesting to look at the
images after each iteration. It really sharpens lines and shapes that
would be a smoother gradient in the original image and reduces the
dimensions.

I don't know if successive iterations would yield something you could use
to set contrast.