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Different browser - different results
I use jsfeat to find the coordinates [x,y] of the 4 corners of a trapezoid in a photo ... successful. I mainly use Canny and Hough Line Transformation. So far so good.
But the same javascript code calculate different results (coordinates [x,y]) in different browsers (Firefox, Chrome, Safari). I guess, drawImage is the reason. Because the RGB-value of the same pixel is not the same different browsers?!
Does anybody have experiences with this?