发明名称 |
Color negative scanning and transforming into colors of original scene |
摘要 |
An apparatus and a method are disclosed for digitizing a color negative picture and correcting the image signals in a way that they are linearly related to the luminance of the photographed scene for grey tones in the scene. A second embodiment allows obtaining on the basis of the color-corrected image signals a reproduction of true color of the scene on a color display unit. For determining the correction, use is made of the characteristic system curve indicating for each of the color components the relation between the luminance of a neutral color swatch in the scene and the density sensed by the scan system. Several methods for drafting said system curve are described. Furthermore, the way of obtaining the color-corrected image signals by means of a color transformation and the way of determining the transformation are explained.
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申请公布号 |
US6271940(B1) |
申请公布日期 |
2001.08.07 |
申请号 |
US20000613953 |
申请日期 |
2000.07.11 |
申请人 |
AGFA-GEVAERT |
发明人 |
DESCHUYTERE FRANK;TUIJN CHRIS |
分类号 |
G03F3/08;H04N1/48;H04N1/60;H04N7/18;H04N9/11;H04N9/68;(IPC1-7):H04N1/46 |
主分类号 |
G03F3/08 |
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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