College students often use mobile phones to shoot PPT, but the shooting of the PPT due to the angle of the problem, most of the space deformation, but also does not account for the entire screen. This procedure to achieve automatic PPT positioning algorithm, through the connected domain calibration to identify the four corners of the PPT, through the projection transform to correct the shape of PPT. I made the GUI interface, running demo_gui.m can be. In addition, the 20 sample PPT is provided to demonstrate. Detailed information as well as the specific implementation of the algorithm see compression package within the readme.pdf

ppt鍥剧墖鐭

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