公开(公告)号：US09106783B2

公开(公告)日：2015-08-11

申请号：US14192901

申请日：2014-02-28

Applicant: KYOCERA Document Solutions Inc.

Inventor： Haruki Sayama

IPC: H04N1/60 ,  H04N1/028 ,  H04N1/00 ,  H04N1/10 ,  H04N1/40

CPC classification number: H04N1/02815 ,  H04N1/00005 ,  H04N1/02885 ,  H04N1/1017 ,  H04N1/40056

Abstract: An image reading apparatus includes a light emitting diode (LED), a carriage, light receiving elements, a clamp circuit, an A/D convertor, and an image correction unit. The image correction unit is configured to: detect a document area where the reflected light is abnormal by comparing first image data with second image data; and replace the first image data corresponding to the abnormal document area with third image data. The first image data is generated by movement of the carriage in a sub-scanning direction of a first direction. The second image data is generated by movement of the carriage in the sub-scanning direction of a second direction at a reduced luminescence level of the capturing light illuminated on the document compared with a luminescence level in the movement of the carriage in the first direction. The third image data is the second image data where at least brightness is adjusted.

Abstract translation: 图像读取装置包括发光二极管（LED），滑架，光接收元件，钳位电路，A / D转换器和图像校正单元。 图像校正单元被配置为：通过将第一图像数据与第二图像数据进行比较来检测反射光异常的文档区域; 并用第三图像数据替换与异常文档区域对应的第一图像数据。 第一图像数据通过滑架沿第一方向的副扫描方向的移动而产生。 第二图像数据是通过滑架在第二方向的副扫描方向上的移动而产生的，该扫描方向是与沿着第一方向移动的运动中的发光水平相比，在照射在文件上的捕获光的降低的发光水平。 第三图像数据是至少亮度被调整的第二图像数据。