>> What on earth is a 3X3 matrix?
>3 by 3 is the small matrix (or "kernal") around the pixel to be
filtered ... i.e., its nearest neighbors. Other common filter kernals are
5x5 (a pixel beyond nearest neighbor), and 7x7 ... and even larger.
That's definitely CG Programmer talk. As Spock would say, "Fascinating."
This thread has a lot of built-in general interest! :-)
Best regards--LRA
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