sw.zip_frame differencing_matlab差分帧_差分阈值_帧差

EBU706U Multimedia Systems Coursework Part A PC Readme File 23 Oct 2009 Mingfei SHAO, ee06b139 -------------------------------------------- ATTENTION -------------------------------------------- 1. Before using any programs in this pack, please make sure all necessary video decoders/decompressors have been correctly installed and configured! 2. Extract all .M files before running them in MATLAB. -------------------------------------------- USER GUIDE -------------------------------------------- 1. Access any desired pixel in any desired frame Program: EBU706U_PA1.m Syntax: pix = EBU706U_PA1(filename, frameindex, pixelx, pixely) FILENAME is a string that corresponding to the name of video file to open. If the file is not inside current directory, please include it's full path. FRAMEINDEX is a integer specifies the position of desired frame. PIXELX, PIXELY are two integers that stands for the position of a desired pixel in that frame. PIX is a 1-by-1-by-3 matrix that holds the R, G and B values of that pixel respectively. Output: The image of desired frame. 2. Perform pixel-by-pixel frame differencing with respect to the first frame Program: EBU706U_PA2.m Syntax: EBU706U_PA2(filename) FILENAME is a string that corresponding to the name of video file to open. If the file is not inside current directory, please include it's full path. Output: 3 groups of images. Each group cantains 3 iamges: the reference frame (upper-left), the original frame (lower-left) and the differencing result (lower-right). 3. Apply classification thresholds Program: EBU706U_PA3.m Syntax: EBU706U_PA3(filename, thresh) FILENAME is a string that corresponding to the name of video file to open. If the file is not inside current directory, please include it's full path. THRESH is a float number, range [0, 1], and represents the threshold value for binary image conversion. Output: 1). 1 group of images which cantains 3 iamges: 3 different differenced frames after binary conversion. 2). 3 different differenced frames after binary conversion in JPEG format. 4. Perform pixel-by-pixel frame differencing with respect to pervious frame Program: EBU706U_PA4.m Syntax: EBU706U_PA4(filename) FILENAME is a string that corresponding to the name of video file to open. If the file is not inside current directory, please include it's full path. Output: 1). A 3*3 image grid. Each coloum repersents a original frame, result image after differencing and the binary version. 2). 3 different differenced frames and their results after binary conversion in JPEG format. 5. Combine the thresholded results of the pixel-by-pixel frame differencing Program: EBU706U_PA5.m Syntax: EBU706U_PA5(filename) FILENAME is a string that corresponding to the name of video file to open. If the file is not inside current directory, please include it's full path. Output: 1). 1 group of images which cantains 3 iamges: 3 different differenced frames after binary conversion and combination. 2). 3 different differenced frames after binary conversion and combination in JPEG format.