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    • 5. 发明授权
    • Apparatus, method and computer-readable medium for eliminating dark current components of an image pickup device
    • 用于消除图像拾取装置的暗电流分量的装置,方法和计算机可读介质
    • US08111306B2
    • 2012-02-07
    • US12145926
    • 2008-06-25
    • Daisuke KurumaNobuyuki Sato
    • Daisuke KurumaNobuyuki Sato
    • H04N9/64
    • H04N5/361H04N5/3653
    • An image pickup apparatus includes an image pickup device including plural imaging planes each having different dark current characteristics, each of the imaging planes having an effective image area and an corresponding optical black (OPB) area. The image pickup apparatus also includes a memory that stores a dark current data table including difference data between dark current values pre-measured at upper and lower areas of the effective image area of each of the imaging planes and dark current values pre-measured at corresponding upper and lower areas of the OPB area. The image pickup apparatus further includes an image processing unit to calculate estimate dark current values for the effective image area based on the dark current data table and actual dark current values measured in the OPB area for each of the imaging planes, and eliminates the dark current components for the effective imaging areas.
    • 图像拾取装置包括具有各具有不同暗电流特性的多个成像面的图像拾取装置,每个成像平面具有有效图像区域和对应的光学黑色(OPB)区域。 图像拾取装置还包括存储器,其存储暗电流数据表,其包括在每个成像平面的有效图像区域的上部和下部区域预测量的暗电流值和在相应的预测的预测量的暗电流值之间的差分数据 OPB区域的上下区域。 图像拾取装置还包括图像处理单元,用于基于暗电流数据表和针对每个成像平面在OPB区域中测量的实际暗电流值来计算有效图像区域的估计暗电流值,并且消除暗电流 组件用于有效的成像区域。
    • 6. 发明授权
    • Image device and method for removing noise
    • 用于消除噪音的图像设备和方法
    • US07479993B2
    • 2009-01-20
    • US10432134
    • 2002-09-03
    • Ken NakajimaNobuyuki Sato
    • Ken NakajimaNobuyuki Sato
    • H04N5/217
    • H04N5/361
    • An image capturing apparatus capable of removing a noise due to a dark signal from a solid-state imaging device is provided. After storing an image signal (A2) obtained through an ordinary capturing in an image memory, an image signal (B2) captured immediately thereafter with a shutter closed is stored in the image memory. Next, respective image signals (A2) and (B2) are supplied to a preprocessing circuit (6a) via a memory controller (6c). An arithmetic circuit (61), by subtracting the image signal (B2) from the image signal (A2), removes a fixed pattern noise and an offset component. A bright spot detection circuit (62) detects an occurrence position of a bright spot noise from the image signal (B2), and in response to this detection, outputs a timing pulse (T1). A black point compensation circuit (63), on the basis of the timing pulse (T1), detects a pixel having a possibility of occurrence of a black point noise, in an image signal (C1) outputted from the arithmetic circuit (61), and compensates for this pixel using a data of a pixel in the vicinity thereof.
    • 提供了一种能够从固态成像装置中消除由暗信号引起的噪声的图像捕获装置。 在将通过普通拍摄获得的图像信号(A2)存储在图像存储器中之后,将快门关闭后立即拍摄的图像信号(B2)存储在图像存储器中。 接下来,各个图像信号(A2)和(B2)经由存储器控制器(6c)提供给预处理电路(6a)。 算术电路(61)通过从图像信号(A2)中减去图像信号(B2),去除固定图案噪声和偏移分量。 亮点检测电路(62)根据图像信号(B2)检测亮点噪声的发生位置,响应于该检测,输出定时脉冲(T1)。 基于定时脉冲(T1)的黑点补偿电路(63)在从运算电路(61)输出的图像信号(C1)中检测出具有黑点噪声的可能性的像素, 并使用其附近的像素的数据来补偿该像素。
    • 7. 发明授权
    • Image processing apparatus and method, recording medium, and program
    • 图像处理装置和方法,记录介质和程序
    • US07460728B2
    • 2008-12-02
    • US10921284
    • 2004-08-19
    • Isao KawanishiMiyuki OkadaNobuyuki SatoKen Nakajima
    • Isao KawanishiMiyuki OkadaNobuyuki SatoKen Nakajima
    • G06K9/40
    • H04N5/243H04N5/217H04N5/23296H04N9/646
    • For each pixel read from an imaging device, a horizontal counter value and a vertical counter value corresponding to the pixel are supplied from a signal generator to a distance computation section via an optical-axis-center coordinate setting section and an up-and-down and right-and-left weighting section. In the distance computation section, the distance to the optical-axis center is computed, and correction coefficients for the zoom wide end and for the zoom tele end, which correspond to the distance, are obtained by look-up tables. The two obtained correction coefficients are blended at a mixture ratio determined by a blend ratio setting section. The blended shading correction coefficients are gain adjusted by a gain adjustment section, after which they are supplied to a correction section. As a result, a correction corresponding to the distance to the optical-axis-center position is performed on the signal of each pixel supplied from an imaging section.
    • 对于从成像装置读取的每个像素,将与像素相对应的水平计数器值和垂直计数器值经由光轴中心坐标设定部和上下方向从信号发生器供给到距离计算部 和右,右加权部分。 在距离计算部分中,计算到光轴中心的距离,并且通过查找表获得与距离对应的变焦宽端和变焦远端的校正系数。 将两个获得的校正系数以由混合比设置部确定的混合比混合。 混合阴影校正系数是通过增益调整部分调整的增益,之后将它们提供给校正部分。 结果,对从摄像部提供的每个像素的信号执行与光轴中心位置的距离相对应的校正。
    • 8. 发明授权
    • Image data correcting method and imaging device
    • 图像数据校正方法及成像装置
    • US07432966B2
    • 2008-10-07
    • US10240778
    • 2002-02-07
    • Nobuyuki SatoKen Nakajima
    • Nobuyuki SatoKen Nakajima
    • H04N9/64H04N5/217H04N5/228H04N5/225H04N1/40
    • H04N5/3572
    • A screen correction method and image pick-up device suitable for use in, for example, digital cameras. Horizontal and vertical signals from a signal generator (SG) are supplied to a semiconductor image pick-up device (CCD) via a timing generator (TG). Horizontal and vertical counter values from the signal generator are supplied to a distance calculation block, and the distance from optical axis center position information, provided from terminals 5X, 5Y, is calculated. This calculated distance value d is supplied to a converter (conv), and a distance value, converted according to information from the terminal on the number of pixels of the semiconductor image pick-up device, is supplied to a lookup table (LUT), to output the correction coefficients according to the distance from, for example, the optical axis center position.
    • 适用于例如数码相机的屏幕校正方法和图像拾取装置。 来自信号发生器(SG)的水平和垂直信号经由定时发生器(TG)提供给半导体图像拾取装置(CCD)。 来自信号发生器的水平和垂直计数器值被提供给距离计算块,并且计算从端子5X,5Y提供的从光轴中心位置信息的距离。 将该计算出的距离值d提供给转换器(conv),并且根据来自终端的信息将半导体摄像装置的像素数量转换的距离值提供给查找表(LUT) 根据与例如光轴中心位置的距离输出校正系数。