Image Processing: Find nearest nonzero pixel value to specified pixel coordinates
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Is there a way to find the closest non-zero pixel value to specified x,y coordinates of an image by shifting only the horizontal 'x' direction?
For example, if I have the coordinates 100, 100, the pixel value is zero, but there is a 1 at the coordinates 100, 98. Is there a way that I can find this 1 automatically, and retrieve the correct coordinates (98,100)?
As always, thanks for your help!