Fast way to convert a Bitmap into a Boolean array in C#?

Question

I am making an XNA application where I capture the screenshot from a webcam 4 times a second and then I try to convert it into an Boolean array when the pixel color Red is below

Answer 1

The answer provided by Hans Passant is correct, it is better to use LockBits and process the data all at once.

You might also try writing a shader that thresholds the data and thereby utilize the power of the GPU to parallel-process the input image stream much, much faster.