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    SHADING CORRECTION METHOD FOR IMAGE READING MEANS
    3.
    发明公开
    SHADING CORRECTION METHOD FOR IMAGE READING MEANS 有权
    SCHATTIERUNGKORREKTUR方法FÜRBILDLEZEMITTEL

    公开(公告)号：EP1529395A1

    公开(公告)日：2005-05-11

    申请号：EP03788314.7

    申请日：2003-08-01

    申请人： ZORAN CORPORATION

    发明人： PINTO, Victor ,  GALIL, Erez

    IPC分类号： H04N5/217

    CPC分类号： H04N5/2178 ,  H04N5/217 ,  H04N5/243

    摘要： A technique for modifying data of an image, such as can be implemented in a still camera or video recorder in order to correct for defects in its optical and/or electronic systems, includes generating data to modify the image as a function of radial position across it. A variation of the intensity across an image (lens shading) that appears in data from a two-dimensional detector is an example of an application of the technique. In order to make modifications to the data, positions of a two-dimensional raster scan pattern of an image sensor are converted to radial positions and this is then used to generate the modification data. The modification data is generated on the fly, at the same rate as the image data is being acquired, so that the modification takes place without slowing down data transfer from the image sensor.

    摘要翻译： 用于修改诸如可以在静态照相机或录像机中实现的图像的数据以便校正其光学和/或电子系统中的缺陷的技术包括生成数据以将图像修改为径向位置的函数 它。 出现在来自二维检测器的数据中的图像（透镜阴影）的强度的变化是该技术的应用的示例。 为了对数据进行修改，将图像传感器的二维光栅扫描图案的位置转换为径向位置，然后将其用于生成修改数据。 修改数据以与获取图像数据相同的速率在飞行中生成，使得在不减缓来自图像传感器的数据传输的情况下进行修改。

    Radiation imaging apparatus
    4.
    发明公开
    Radiation imaging apparatus 有权
    Röntgenbildgerät

    公开(公告)号：EP1477932A2

    公开(公告)日：2004-11-17

    申请号：EP04011444.9

    申请日：2004-05-13

    申请人： CANON KABUSHIKI KAISHA

    发明人： Nonaka, Hideki c/o Canon Kabushiki Kaisha

    IPC分类号： G06T5/00

    CPC分类号： A61B6/032 ,  A61B6/00 ,  G06T5/002 ,  G06T2207/10116 ,  H04N5/2178 ,  H04N5/32

    摘要： To efficiently generate image data by using correction data. First offset data is obtained in advance for each of a plurality of imaging times, and is stored in a second image storage unit. The imaging time requested by a user is selected from the plurality of imaging times by a control unit, and an object is shot in the selected imaging time so as to store image data in a first image storage unit. A correction processing unit offset-corrects the image data by using first offset data corresponding to the selected imaging time and outputs first image data (preview image). In parallel with an output of the first image data, an imaging operation without irradiation is performed to have second offset data on approximately the same condition as actual imaging obtained by the control unit, and the image data is offset-corrected by using the obtained second offset data so as to output second image data.

    摘要翻译： 通过使用校正数据有效地生成图像数据。 对于多个成像时间中的每一个，预先获得第一偏移数据，并存储在第二图像存储单元中。 通过控制单元从多个成像时间中选择用户请求的成像时间，并且在所选择的成像时间中拍摄对象，以将图像数据存储在第一图像存储单元中。 校正处理单元通过使用对应于所选择的成像时间的第一偏移数据来偏移校正图像数据，并输出第一图像数据（预览图像）。 与第一图像数据的输出并行地，执行没有照射的成像操作以在与由控制单元获得的实际成像大致相同的条件下具有第二偏移数据，并且通过使用获得的第二图像数据来对图像数据进行偏移校正 偏移数据，以输出第二图像数据。

    A test efficient method of classifying image quality of an optical sensor using three categories of pixels
    5.
    发明公开
    A test efficient method of classifying image quality of an optical sensor using three categories of pixels 有权
    使用三个像素的类别的光学传感器的图像质量分类有效的测试方法

    公开(公告)号：EP0997845A2

    公开(公告)日：2000-05-03

    申请号：EP99115492.3

    申请日：1999-08-05

    申请人： Hewlett-Packard Company

    发明人： Perino, Stanley C.

    IPC分类号： G06T7/00

    CPC分类号： G06T7/0006 ,  G06T2207/30168 ,  H04N5/2178 ,  H04N5/367

    摘要： A multi-threshold optical binning method for classifying the image quality of an optical sensor (104) is presented. In accordance with the invention, a sensor tester (102) causes a sensor pixel image (105) to be generated by a sensor under test (104). The sensor pixel image (105) is comprised of a plurality of pixels, each represented by an associated quantized intensity level. The quantized intensity level of a pixel may fall into one of a first pixel class, a second pixel class, or a third pixel class, for example, a dark pixel class, a dim pixel class, and an acceptable pixel class. An image filter (106) processes the sensor pixel image (105), filtering out all pixels that fall within the acceptable pixel class, to generate a defective pixel map (108). The defective pixel map (108) includes those pixels which have a quantized intensity level that falls within the first and/or second pixel class but not the third pixel class.

    摘要翻译： 提出了一种用于光学传感器（104）的图像质量分类的多阈值光学分级方法。 在符合本发明雅舞蹈，一个传感器测试器（102）引起的传感器像素图像（105）以由传感器被测（104）生成的。 传感器像素图像（105）包括像素的复数，每个由在相关联的量化的强度水平为代表。 的像素的量化强度水平可能落入第一像素类，第二像素类，或第三像素类中的一个，例如，暗像素的类，暗淡的像素的类，并且在可接受的像素的类。 图像过滤器（106）处理所述传感器像素图像（105），过滤出所有像素都落在可接受的像素类中，以产生一个有缺陷的像素图（108）。 缺陷像素映射（108）包括像素那些具有量化的强度水平做如果第一和/或第二像素类中的第三像素类中但不是。

    TECHNIQUES FOR MODIFYING IMAGE FIELD DATA
    10.
    发明公开
    TECHNIQUES FOR MODIFYING IMAGE FIELD DATA 有权
    用于修改图像场数据的技术

    公开(公告)号：EP1700268A1

    公开(公告)日：2006-09-13

    申请号：EP04814198.0

    申请日：2004-12-14

    申请人： ZORAN CORPORATION

    发明人： PINTO, Victor ,  GALIL, Erez

    IPC分类号： G06T5/00 ,  G06T5/20

    CPC分类号： H04N5/3572 ,  G06T5/006 ,  H04N5/217 ,  H04N5/2178 ,  H04N5/243 ,  H04N9/045

    摘要： Techniques for modifying data of an image that can be implemented in a digital camera, video image capturing device and other optical systems are provided to correct for image shading variations appearing in data from a two-dimensional photo-sensor. These variations can be caused by imperfect lenses, non-uniform sensitivity across the photo-sensor, and internal reflections within a housing of the optical system, for example. In order to correct for these variations, a small amount of modification data is stored in a small memory within the camera or other optical system, preferably separate correction data for each primary color. The modification data is generated on the fly, at the same rate as the image data is being acquired, so that the modification takes place without slowing down data transfer from the image sensor.

    摘要翻译： 提供用于修改可以在数码相机，视频图像捕获设备和其他光学系统中实现的图像的数据的技术，以校正在来自二维光传感器的数据中出现的图像阴影变化。 例如，这些变化可能由不完美的镜片，整个光电传感器上的不均匀灵敏度以及光学系统外壳内的内部反射引起。 为了校正这些变化，将少量修改数据存储在照相机或其他光学系统内的小存储器中，优选为每种基色分离校正数据。 修改数据在运行中以与正在采集图像数据相同的速率生成，从而在不减慢来自图像传感器的数据传输的情况下进行修改。