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    • 6. 发明申请
    • PROCESSING DEVICE FOR CORRECTING DEFECT PIXEL VALUES OF AN IMAGE SENSOR UNIT, IMAGE SENSOR UNIT WITH THE PROCESSING DEVICE AND METHOD
    • 用于校正图像传感器单元的缺陷像素值的处理装置,具有处理装置和方法的图像传感器单元
    • WO2009007199A1
    • 2009-01-15
    • PCT/EP2008/057565
    • 2008-06-16
    • THOMSON LICENSINGTHEBAULT, CédricWEITBRUCH, SébastienCORREA, Carlos
    • THEBAULT, CédricWEITBRUCH, SébastienCORREA, Carlos
    • H04N5/217H04N9/04H04N9/09
    • H04N5/3675H04N5/374H04N9/045H04N9/09H04N2209/049
    • CMOS image sensors are usually suffering from fixed pattern noise and random defect pixels. However, for economical reasons and in order to increase the manufacturing yield, some random defective pixels are usually accepted even for professional devices. In this case, the defect pixels are usually corrected by signal processing. A processing device (15) for correcting of at least one defect pixel value of an image sensor unit is proposed, the image sensor unit comprising at least a first and a second pixel array (1, 2, 3), wherein the image sensor unit is embodied to project the same image onto each pixel array (1, 2, 3), the processing device (15) comprising at least a first and a second input channel (11, 12, 13) for receiving pixel values of the first and the second pixel array, respectively, wherein the processing device (15) is operable to exchange the defect pixel value by a corrected pixel value, wherein the corrected pixel value is estimated by evaluating the values of neighbouring pixels of the defect pixel of the same pixel array, wherein the corrected pixel value is estimated by evaluating values of a corresponding pixel and its neighbouring pixels of the second pixel array at the same location as the defect pixel of the first pixel array in respect to the projected image.
    • CMOS图像传感器通常患有固定图案噪声和随机缺陷像素。 然而,出于经济原因,为了提高制造成品率,即使对于专业装置,也通常接受一些随机缺陷像素。 在这种情况下,通常通过信号处理校正缺陷像素。 提出了一种用于校正图像传感器单元的至少一个缺陷像素值的处理设备(15),所述图像传感器单元至少包括第一和第二像素阵列(1,2,3),其中所述图像传感器单元 被实现为将相同的图像投影到每个像素阵列(1,2,3)上,处理设备(15)包括至少第一和第二输入通道(11,12,13),用于接收第一和第二输入通道 第二像素阵列,其中处理装置(15)可操作以将缺陷像素值交换校正的像素值,其中通过评估相同像素的缺陷像素的相邻像素的值来估计校正像素值 阵列,其中通过对与所述第一像素阵列相对于所述投影图像的所述缺陷像素相同的位置处的所述第二像素阵列的相应像素及其相邻像素的值进行评估来估计所述校正像素值。