发明名称 |
High quality film image correction and duplication method and system |
摘要 |
A method and system for correcting a non-linear characteristic of an image, wherein an input image is digitized to produce digital image data representative of the image and a histogram of the digital image data is produced. At least a first pixel value characteristic of a variable under which the image was derived is extracted from the histogram. A plurality of non-linear correction curves relating original pixel values to corrected pixel values for different degrees of the variable are stored in a memory, and a particular one of the correction curves is selected based at least in part on the first extracted pixel value and a predetermined corrected pixel value. Corrected image data are then formed utilizing the selected correction curve by correcting each original pixel value of the image to a respective corrected pixel value based on the relationship therebetween defined by the selected correction curve, and a non-linearity corrected image is produced based on the corrected image data.
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申请公布号 |
US5224177(A) |
申请公布日期 |
1993.06.29 |
申请号 |
US19910786008 |
申请日期 |
1991.10.31 |
申请人 |
THE UNIVERSITY OF CHICAGO |
发明人 |
DOI, KUNIO;YOSHIMURA, HITOSHI |
分类号 |
A61B6/00;G06T1/00;G06T5/00;G06T5/20;G06T5/40;H04N1/407;H04N1/409 |
主分类号 |
A61B6/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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