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1. 发明申请

US20060263101A1 Sheet identifying device and method 审中-公开
标题翻译：表格识别装置和方法
公开(公告)号：US20060263101A1
公开(公告)日：2006-11-23
申请号：US10554253
申请日：2004-04-23
申请人： Seiji Takamatsu , Satoru Tsurumarki , Yasuyuki Kimura
发明人： Seiji Takamatsu , Satoru Tsurumarki , Yasuyuki Kimura
IPC分类号： G03G15/00
CPC分类号： G07D7/12
摘要： A sheet paper identification apparatus and method for stably identifying a sheet paper while preventing erroneous identification caused by dust adhered to an imaging section and caused by fluctuation in illumination brightness. An imaging section (7) images the interior of the imaging section (7) before a sheet paper is fed to capture image data on an image showing no sheet paper. When a sheet paper is fed into the imaging section (7), the imaging section (7) images the sheet paper and captures image data on an image showing a sheet paper. An image data analyzing section (8) creates a density histogram of the image showing no sheet paper from the image data on the image showing no sheet paper and detects dust adhered to the imaging section (7) on the basis of the density histogram. If the amount of particles exceeds a reference value, the image data analyzing section (8) sends a report about the abnormality of the imaging section (7) to a control section (2). The image data analyzing section (8) creates a density histogram of the image showing a sheet paper from the image data on the image showing a sheet paper, determines brightness of the image on the basis of the density histogram, and adjusts imaging operations of the imaging section (7) according to the determination.
摘要翻译：一种纸张识别装置和方法，用于在防止由附着到成像部分的灰尘引起的错误识别并且由照明亮度的波动引起的情况下稳定地识别纸张。成像部分（7）在馈送纸张之前对成像部分（7）的内部进行成像，以在不显示纸张的图像上捕获图像数据。当将纸张馈送到成像部分（7）中时，成像部分（7）对片材进行成像，并将图像数据捕获在显示纸张的图像上。图像数据分析部分（8）从不显示纸张的图像上的图像数据中创建不显示纸张的图像的浓度直方图，并且基于浓度直方图检测粘附到成像部分（7）的灰尘。如果粒子量超过参考值，则图像数据分析部（8）将关于摄像部（7）的异常的报告发送到控制部（2）。图像数据分析部（8）从显示纸张的图像的图像数据中创建表示纸张的图像的浓度直方图，基于浓度直方图确定图像的亮度，并且调整图像数据分析部成像部分（7）根据确定。

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