Fast Blur Algorithm

 

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This imaging algorithm is a fast blur. It will not work in real time, but it's quick, nonetheless.

-- Fast Blur Imaging Code -- ©2005 by Josh Chunick (josh@chunick.com) -- This code is free to use in commercial applications -- or however you want. If you use this code you -- must keep the comments, including this message, -- intact. Feel free to add any changes or make -- improvements. -- anImage is an image object -- hBlur is the amount of blurring as an integer or float -- vBlur is the amount of blurring as an integer or float on fastBlur (anImage, hBlur, vBlur)   newImage = anImage.duplicate()   theWidth = newImage.width - 1   theHeight = newImage.height - 1      -- draw each pixel in the new image   repeat with y1 = 0 to theHeight          repeat with x1 = 0 to theWidth              interplY1 = max(min(y1 - vBlur, y1 - 1), 1)       interplX1 = max(min(x1 - hBlur, x1 - 1), 1)       interplY2 = min(max(y1 + vBlur, y1 + 1), theHeight)       interplX2 = min(max(x1 + hBlur, x1 + 1), theWidth)       newImage.copyPixels(anImage, rect(x1,y1,x1 + 1,y1 + 1), rect(interplX1,interplY1,interplX2,interplY2))            end repeat   end repeat      return newImage    end