发明名称 |
Method for compositing a source and destination image using a mask image |
摘要 |
This invention provides a method for compositing a source image and a destination image using a mask image to produce a result image in a digital image processing system. The method is, on a pixel-by-pixel basis, using the mask image to select between the source and destination images: where a black color value for a mask pixel selects the color value of the corresponding pixel of the source image; and a white color value for a mask pixel selects the color value of the corresponding pixel of the destination image; and where an intermediate color value for a mask pixel selects a weighted average between source and destination pixel color values. The calculations of the weighted average color value are done in color space, such as on a color component by color component basis. The result image can be displayed or stored for further use. This method can be described in boolean expression according to the formula: result=((1-mask)*source)+(mask*destination).
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申请公布号 |
US5379129(A) |
申请公布日期 |
1995.01.03 |
申请号 |
US19920880623 |
申请日期 |
1992.05.08 |
申请人 |
APPLE COMPUTER, INC. |
发明人 |
OTHMER, KONSTANTIN;LEAK, BRUCE A. |
分类号 |
H04N1/387;(IPC1-7):H04N1/387 |
主分类号 |
H04N1/387 |
代理机构 |
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主权项 |
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地址 |
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