Patent
Background replacing method and apparatus for images
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TLDR
In this article, a background replacing method and apparatus for images is presented, which can modify an existing scheme based on green screen sectional drawing and increases softening and ambient light removing processing so that images can become more softened and natural.Abstract:
The invention provides a background replacing method and apparatus for images. The background replacing method for images includes the steps: based on the RGB component of the current frame of an image, calculating a green difference value, and based on the green difference value, obtaining an initial alpha channel image which includes an initial background image and an initial foreground image; utilizing the green difference value to softening the initial alpha channel image to obtain a first alpha channel image; based on an ambient light factor, performing ambient light removing processing on the first alpha channel image to obtain a final alpha channel image which includes a background image to be synthesized and a processed foreground image; and synthesizing the final alpha channel image, the background image to be synthesized and the processed foreground image. The background replacing method and apparatus for images can modify an existing scheme based on green screen sectional drawing and increases softening and ambient light removing processing so that images can become more softened and natural.read more
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Patent
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References
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Patent
Video matting and synthesis method
Yuan Yuan,Tan Xu,Liu Ying,Ma Lei +3 more
TL;DR: In this article, a video matting and synthesis method is proposed for real-time and post-processing of video frames captured through a camera in a GPU, where edge detection and smoothing are performed on the video formed after synthesis.
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TL;DR: In this article, a blue-screen image-matting method was proposed to reduce human interaction and parameter adjustment during the whole processing process, which greatly reduced the amount of parameter adjustment and human interaction.
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Method of alpha channel boundary corrosion
TL;DR: In this paper, a method of alpha channel boundary corrosion is proposed, where all pixels in original alpha channel images are described pixels in the boundary and out the boundary by a threshold, and then, different coefficient matrixes are used for the multiplicative summation of pixels in neighborhoods aiming to different categories.