Convolution Operator

The convolution engine enables you to create your own filters

Sobel
Actually, Sobel plus an extra step (or two).
But Sobel should give you a good running start.

Stroker – thank you for that. Have tried sobel but any idea what the extra step or two consists of (bluring smoothing ??)

The last step is to find the magnitude.

gX = Sobel in the x direction
gY = Sobel in the y direction

Then use Pythagoras to get the magnitude, or distance, of (gX,gY).

magnitude = sqr ( gX*gX + gY*gY )

I think sqr() is the right function for square roots…? So, square root function for whatever language you are using.

Then it’s just a matter of cleaning it up. You know, controls for threshhold or whatever. Maybe even invert.

Find the magnitude, and invert.

thank you gents