Pure-color background image matting synthesis method based on real-time inhibition of background color overflow
A synthesis method and background technology, applied in the field of solid color background keying synthesis, can solve the problems of unnatural color edge transition, loss of edge details, large differences, etc. realistic effect
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[0050] Example 1
[0051] Such as figure 1 As shown, this embodiment provides a solid-color background keying synthesis method based on real-time suppression of background overflow, including the following steps:
[0052] S1: Use the keying algorithm to extract the input video image Input img The keying algorithm used in this embodiment is the commonly used keying algorithm such as chroma key keying, color difference analysis, background subtraction or graphcut graph cut algorithm. Normally, the alpha channel graph alpha The value range of is 0-1, where 0 represents the background part, 1 represents the foreground part, and the range between 0-1 represents the semi-transparent area;
[0053] S2: According to the alpha channel map alpha and the input video image Input img Calculate the foreground image foreground img , The calculation formula is:
[0054] foreground img =Input img *alpha;
[0055] S3: Identify foreground map foreground img For foreground pixels that are overflowed by ...
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