Document illuminator with surface lens
    2.
    发明授权
    Document illuminator with surface lens 有权
    具有表面透镜的文档照明器

    公开(公告)号:US07760434B2

    公开(公告)日:2010-07-20

    申请号:US11513742

    申请日:2006-08-31

    IPC分类号: G02B27/10

    摘要: A scanning apparatus includes an illuminator for illuminating a portion of a document to be scanned. The illuminator includes an array of discrete light sources and an optical element. The optical element includes a light-transmissive material and defines a focusing portion and an angular modification portion. The angular modification portion tends to reduce specular flare by modifying the angular distribution of light from the light sources which are within the acceptance angle of a lens arrangement which focuses light from the document onto a sensor.

    摘要翻译: 扫描装置包括用于照亮待扫描文件的一部分的照明器。 照明器包括离散光源阵列和光学元件。 光学元件包括透光材料并且限定聚焦部分和角度修改部分。 角修改部分倾向于通过修改来自光源的光的角度分布来减少镜面光斑,所述角度分布在将光从文档聚焦到传感器上的透镜装置的接受角度内。

    Device and method for comprehensive temperature sensing and calibration of a full width array image sensor
    3.
    发明授权
    Device and method for comprehensive temperature sensing and calibration of a full width array image sensor 失效
    全宽阵列图像传感器综合温度检测和校准的装置和方法

    公开(公告)号:US07692820B2

    公开(公告)日:2010-04-06

    申请号:US11081647

    申请日:2005-03-17

    IPC分类号: H04N1/32 G03G15/20

    摘要: A method and or a device for comprehensive temperature calibration of a full width array (FWA) image sensor may minimize loss of productivity and/or image quality. Multiple temperature sensors disposed along a width of the FWA image sensor may provide temperature points used to correct for temperature shifts in output of individual pixel sensors of the FWA image sensor. Under control of a microprocessor, a real-time correction may be calculated for each pixel of the FWA image sensor. The correction may be based upon a real-time temperature profile of the FWA image sensor and temperature dependent factors of at least one calibration equation. The factors may be predetermined, or be determined at factory test, at warm-up or at a specified time.

    摘要翻译: 用于全宽阵列(FWA)图像传感器的综合温度校准的方法和装置可以最小化生产率和/或图像质量的损失。 沿着FWA图像传感器的宽度设置的多个温度传感器可以提供用于校正FWA图像传感器的各个像素传感器的输出中的温度偏移的温度点。 在微处理器的控制下,可以为FWA图像传感器的每个像素计算实时校正。 校正可以基于FWA图像传感器的实时温度分布和至少一个校准方程的温度依赖因子。 这些因素可以预先确定,或者在出厂测试时,在预热或在指定的时间确定。

    Method for removing defects in scanned images
    4.
    发明授权
    Method for removing defects in scanned images 有权
    消除扫描图像缺陷的方法

    公开(公告)号:US07746509B2

    公开(公告)日:2010-06-29

    申请号:US11641731

    申请日:2006-12-20

    IPC分类号: H04N1/04

    CPC分类号: H04N1/4095 H04N1/407

    摘要: A method for removing show-through defects in scanned document images is provided by adjusting the scanner's image sensor calibration gain in the area of a drive roll gap. The method will also compensate for drive roll contamination. The invention uses a modified calibration scheme in conjunction with a document transmission sensor in the document handler to measure radiant energy transmitted through the document, i.e., transmission. The scanner adjusts the calibration gain factors to simulate a uniform background with knowledge of the gap and the input document's transmission thus a uniform scanner response is determined and presented to the image processing. A device for carrying out the method is also provided.

    摘要翻译: 通过调整驱动辊间隙区域中扫描仪的图像传感器校准增益,可以提供扫描文档图像中的显示缺陷的方法。 该方法还将补偿驱动辊污染。 本发明使用经修改的校准方案结合文件处理器中的文件传输传感器来测量通过文件传输的辐射能量,即传输。 扫描仪调整校准增益因子以模拟具有差距和输入文档传输知识的均匀背景,因此确定均匀的扫描器响应并呈现给图像处理。 还提供了一种用于执行该方法的装置。