Video Matting from Depth Maps
نویسنده
چکیده
Image matting is the process of computing an alpha value for each pixel that corresponds to the amount of the pixel that is foreground and the amount that is background. This is often used to isolate the foreground and replace the background with a different image. Typically this is done using a special studio and a blue (or green) screen for easier segmentation. However, this method is not as robust as it requires a calibrated studio setup with special equipment. Not all videos that we would like to process are taken in such isolated environments. Our project attempts to isolate the background in videos that can be taken in the field, and do not need a special screen behind the person in the foreground. We use a baysian image matting aproach to peform the matting. We capture data using a low resolution range camera and high resolution color video camera. We use the depth information to improve the quality of the matting over a standard Bayesian matting technique.
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