Quasimondo - Mario Klingemann's Flash Blog: Automated Threshold & Edge Detection
Automated Threshold & Edge Detection It's a tiny bit late maybe, but here are two image processing techniques that deal with automated thresholding and edge detection that I showed in my "2d or not 2d" talk in 2007 and in "The Pixel Whisperer" in 2008. I've had a look at my presentation demos and repackaged their code into a single class called ThresholdBitmap. This is a BitmapData class with a fe
Quasimondo - Mario Klingemann's Flash Blog: Optimizing Flash Based Face Detection
Optimizing Flash Based Face Detection Yesterday Seb-Lee Delisle pointed us via Twitter to this great example of a Flash based real-time face detection. It turns out that already more than half a year ago Ohtsuka Masakazu had been porting the face detection part of OpenCV to AS3 and added the source code to the Spark project - which is like a Actionscript candy box full of surprises. So I had a loo
Quasimondo - Mario Klingemann's Flash Blog: Optimizing Seam Carving
Optimizing Seam Carving After my post about the various content-aware image resizing projects I couldn't resist to take a closer look at Joa Ebert's ImageResizing class and take him on his word "If you can improve something do not be shy and post it". I just love code optimizing and saw several points to attack. First I replaced the loop that moved the pixels via getPixel()/setPixel() by a displac
Quasimondo - Mario Klingemann's Flash Blog: Flash 8: ColorMatrix
Flash 8: ColorMatrix Today I've got something not very spectacular but nevertheless quite useful: a demo of my ColorMatrix class. The new ColorMatrixFilter is a very versatile tool that allows for many color manipulations, many more than the good old ColorTransform was capable of. The only problem with the filter is that in order to use it you will have to feed it with a ColorMatrix which in prati
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