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41. 发明授权

US07313271B2 Color detection using grayscale and position information 有权
标题翻译：使用灰度和位置信息进行颜色检测
公开(公告)号：US07313271B2
公开(公告)日：2007-12-25
申请号：US11007498
申请日：2004-12-07
申请人： Boon Keat Tan , Jlin Cheang Cheong , Chung Min Thor
发明人： Boon Keat Tan , Jlin Cheang Cheong , Chung Min Thor
IPC分类号： G06K9/00
CPC分类号： H04N1/465 , H04N1/6033
摘要： The color of a surface is determined by tracking the position of the surface using grayscale image sensing and then using captured grayscale image information, position information, and grayscale-to-color conversion information to determine color. In one embodiment, the technique requires establishing grayscale-to-color conversion information and a relationship between position and the grayscale-to-color conversion information. A calibration pattern is printed on a piece of paper and the surface of the paper is illuminated. Grayscale image information and position information related to the surface is generated in response to the illumination. Color-specific portions of the grayscale-to-color conversion information that are to be used in color determination are selected based on the position information. Grayscale image information related to the calibration pattern is then compared to the selected color-specific portions of the grayscale-to-color conversion information to determine the color of the calibration pattern.
摘要翻译：通过使用灰度图像感测跟踪表面的位置，然后使用捕获的灰度图像信息，位置信息和灰度到颜色转换信息来确定颜色来确定表面的颜色。在一个实施例中，该技术需要建立灰度到颜色转换信息以及位置与灰度到颜色转换信息之间的关系。校准图案印在一张纸上，纸张的表面被照亮。响应于照明产生与表面相关的灰度图像信息和位置信息。基于位置信息来选择要用于颜色确定的灰度到颜色转换信息的颜色特定部分。然后将与校准图案相关的灰度图像信息与灰度到颜色转换信息的所选颜色特定部分进行比较，以确定校准图案的颜色。

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