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Frame Differencing uses pixel manipulation to quantify the amount of movement recorded. This is done by extracting the color from each pixel and then a given amount of color from each pixel back in when movement is “detected.” Movement is detected when the color of one given pixel in a pixel array is changed. For example, if you have on a completely black shirt and are standing up against a completely white background, the pixels in the location “X” of your shirt will change from black to white if you move to the left a foot. If no movement is detected then the display will remain absent of any color; black. Messing around with different shift values of the the pixel colors I now think that frame differencing has a lot to do with the 3D effect often seen in movie theaters. The frame differencing often fills moved pixels with color, this filling of pixels I believe is what adds a “third dimension” to films5





cs276/homework_assignments.txt · Last modified: 2010/11/01 05:15 by quentin313