How to convert pixel formats? From 32bppRGB to 16bpp grayscale in C#

Question

I need to do some thresholding for my image. The threshold filter function just accepts 8-16bpp grayscale. My bitmap picture has the 32bppRGB

Answer 1

Use AForge.NET framework Grayscale filter

The filter accepts 24, 32, 48 and 64 bpp color images and produces 8 (if source is 24 or 32 bpp image) or 16 (if source is 48 or 64 bpp image) bpp grayscale image.

Then apply threshold filter.