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公开(公告)号:US06912325B2
公开(公告)日:2005-06-28
申请号:US09572259
申请日:2000-05-17
CPC分类号: G06K9/3283 , G06K2209/01 , G06T3/608 , H04N1/00681 , H04N1/3878
摘要: The registration and skew information of a document about to be scanned are detected prior to capturing the entire image of the document. Two sensors, a fixed distance apart, are used to detect the document skew. A third sensor is used to detect the edge position of the document. Paper sensors in the Automatic Document Feeder (ADF) are used to determine the document size. The data from the skew sensors are used to calculate the required skew correction angle and direction by which to rotate the image. The document edge position information together with skew information is used to determine the exact location of a corner of the document. This information is used to correct skewed image in real-time, during scanning the document.
摘要翻译: 在捕获文档的整个图像之前检测要被扫描的文档的注册和偏斜信息。 两个传感器,一个固定的距离,用于检测文件偏斜。 第三个传感器用于检测文档的边缘位置。 自动输稿器(ADF)中的纸张传感器用于确定文档尺寸。 来自偏斜传感器的数据用于计算旋转图像所需的歪斜校正角度和方向。 文档边缘位置信息以及偏斜信息用于确定文档角落的确切位置。 此信息用于在扫描文档期间实时校正歪斜图像。