公开(公告)号：US07262793B2

公开(公告)日：2007-08-28

申请号：US10433232

申请日：2002-09-20

申请人： Ken Nakajima ,  Nobuyuki Sato ,  Satoshi Mitsui

发明人： Ken Nakajima ,  Nobuyuki Sato ,  Satoshi Mitsui

IPC分类号： H04N5/225 ,  H04N3/14 ,  H04N5/222

CPC分类号： H04N5/3728 ,  H04N5/23293 ,  H04N5/2351 ,  H04N5/343 ,  H04N5/3456 ,  H04N5/3458 ,  H04N5/347 ,  H04N5/3651 ,  H04N9/045

摘要： An image-capturing apparatus, in which solid-state image-capturing elements having a large number of pixels are used, capable of suitably performing image-quality correction on a captured image. In a monitor reading mode, a camera system LSI (6) detects the read image signal which is read by thinning out pixels by an image-capturing device (3). Based on the detected data, control values for image-quality correction are computed in a microcomputer (9), and the camera system LSI (6) performs an image-quality correction process on the image signal based on these control values. When the image-capturing device shifts to a capture reading mode, the camera system LSI (6) temporarily stores the image signal, in which all the pixels are read, in the image memory (7), thereafter reads the image signal and detects it. The microcomputer (9) computes a control value on the basis of this detected data and the detected data in the previously used monitor reading mode. Thereafter, the camera system LSI (6) reads the image signal again, and performs an image-quality correction process on the basis of the control values by the microcomputer (9).

摘要翻译： 使用其中具有大量像素的固态图像捕获元件的图像捕获装置能够适当地对拍摄图像执行图像质量校正。 在监视器读取模式中，相机系统LSI（6）通过图像捕获装置（3）检测通过稀疏像素读取的读取图像信号。 基于检测到的数据，在微型计算机（9）中计算图像质量校正的控制值，并且相机系统LSI（6）基于这些控制值对图像信号执行图像质量校正处理。 当图像拍摄装置转换到拍摄读取模式时，相机系统LSI（6）将图像信号（其中全部被读取的图像信号）临时存储在图像存储器（7）中，然后读取图像信号并检测它 。 微型计算机（9）基于该检测数据和先前使用的监视器读取模式中的检测数据来计算控制值。 此后，相机系统LSI（6）再次读取图像信号，并且基于微型计算机（9）的控制值进行图像质量校正处理。

公开(公告)号：US07479993B2

公开(公告)日：2009-01-20

申请号：US10432134

申请日：2002-09-03

申请人： Ken Nakajima ,  Nobuyuki Sato

发明人： Ken Nakajima ,  Nobuyuki Sato

IPC分类号： H04N5/217

CPC分类号： H04N5/361

摘要： 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.

摘要翻译： 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。

公开(公告)号：US07460728B2

公开(公告)日：2008-12-02

申请号：US10921284

申请日：2004-08-19

申请人： Isao Kawanishi ,  Miyuki Okada ,  Nobuyuki Sato ,  Ken Nakajima

发明人： Isao Kawanishi ,  Miyuki Okada ,  Nobuyuki Sato ,  Ken Nakajima

IPC分类号： G06K9/40

CPC分类号： H04N5/243 ,  H04N5/217 ,  H04N5/23296 ,  H04N9/646

摘要： 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.

摘要翻译： 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。

公开(公告)号：US07432966B2

公开(公告)日：2008-10-07

申请号：US10240778

申请日：2002-02-07

申请人： Nobuyuki Sato ,  Ken Nakajima

发明人： Nobuyuki Sato ,  Ken Nakajima

IPC分类号： H04N9/64 ,  H04N5/217 ,  H04N5/228 ,  H04N5/225 ,  H04N1/40

CPC分类号： H04N5/3572

摘要： 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.

摘要翻译： 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。

公开(公告)号：US07826658B2

公开(公告)日：2010-11-02

申请号：US10514366

申请日：2003-04-16

申请人： Nobuyuki Sato ,  Ken Nakajima ,  Katsuaki Hirota

发明人： Nobuyuki Sato ,  Ken Nakajima ,  Katsuaki Hirota

IPC分类号： G06K9/00 ,  G06K9/46 ,  G06K9/40 ,  H04N9/73 ,  G09G5/02

CPC分类号： H04N5/23245 ,  H04N5/232 ,  H04N5/3456 ,  H04N5/3458 ,  H04N5/772 ,  H04N5/781 ,  H04N5/85 ,  H04N5/907 ,  H04N9/045

摘要： An image-processing apparatus for processing images, whereby the image-processing apparatus includes an image capture unit, a filter, and an extraction unit. The image capture unit acquires image signals composed of multiple color components of a 2×2 color-coding array. The filter then calculates an average pixel value associated with any (2n−1) pixels acquired by the image capture unit, whereby each of the filtered (2n−1) pixels include a target pixel and adjacent pixels having the same color component as that of the target pixel, and the calculated average is designated as the average of the target pixel and the adjacent pixels. At the extraction unit the pixel having the average calculated by the filter as the pixel value is extracted at an extraction rate of 1/(2n−1), where n is a positive integer value.

摘要翻译： 一种用于处理图像的图像处理装置，由此图像处理装置包括图像捕获单元，滤波器和提取单元。 图像捕获单元获取由2×2颜色编码阵列的多个颜色分量组成的图像信号。 然后，滤波器计算与由图像捕获单元获取的任何（2n-1）个像素相关联的平均像素值，由此滤波的（2n-1）像素中的每一个包括目标像素和具有与 目标像素和计算出的平均值被指定为目标像素和相邻像素的平均值。 在提取单元中，以1 /（2n-1）的提取速率提取具有作为像素值的滤波器计算出的平均值的像素，其中n是正整数值。

公开(公告)号：US07317482B2

公开(公告)日：2008-01-08

申请号：US10239137

申请日：2002-01-23

申请人： Nobuyuki Sato ,  Ken Nakajima

发明人： Nobuyuki Sato ,  Ken Nakajima

IPC分类号： H04N9/64 ,  H04N5/225 ,  H04N17/00 ,  H04N1/40 ,  G06K9/40 ,  G02B5/32

CPC分类号： H04N5/3572 ,  G06T5/006 ,  G06T7/00

摘要： A distance calculation method and an imaging device that can be applied to a digital camera. The method includes calculating a distance between a point corresponding to an optical axis of a lens sub-system of the imaging device and an input point, and using the calculated distance to correct defects such as shading that occur in formed images due to peripheral light fall-off in the lens sub-system. The distance is approximated by a polygon having five or more sides, preferably having 8 or 16 sides. The distance is calculated by a disclosed function having constant coefficients, so that distances can be calculated by simple hardware.

摘要翻译： 可应用于数码相机的距离计算方法和成像装置。 该方法包括计算与成像装置的透镜子系统的光轴对应的点与输入点之间的距离，并且使用所计算的距离来校正由于周边光下降而在形成的图像中发生的诸如阴影之类的诸如阴影的缺陷之间的距离 在镜头子系统中。 该距离由具有五个或更多边的多边形近似，优选地具有8或16个边。 通过具有常数系数的公开函数来计算距离，使得可以通过简单的硬件来计算距离。

公开(公告)号：US07227992B2

公开(公告)日：2007-06-05

申请号：US11165710

申请日：2005-06-24

申请人： Hiroaki Ono ,  Seiji Kobayashi ,  Tomoo Mitsunaga ,  Ken Nakajima ,  Chikako Sano ,  Nobuyuki Sato

发明人： Hiroaki Ono ,  Seiji Kobayashi ,  Tomoo Mitsunaga ,  Ken Nakajima ,  Chikako Sano ,  Nobuyuki Sato

IPC分类号： G06K9/00

CPC分类号： H04N1/4074 ,  G06T5/009 ,  G06T5/40 ,  H04N1/407

摘要： An apparatus and a method as well as a storage device of the present invention transform intensity levels with consideration of both features of the intensity levels in an input image and human visual characteristics, wherein the present invention includes the steps of inputting wider dynamic range digital image data, generating a histogram of intensity levels of the image data, generating a histogram equalization LUT by cumulating the histogram, generating a visual characteristics LUT with reference to the histogram equalization LUT, generating a combined LUT by combining the histogram equalization LUT and the visual characteristics LUT, and correcting the image data.

摘要翻译： 本发明的装置和方法以及存储装置考虑输入图像中的强度级别和人类视觉特征两者的特征来变换强度水平，其中本发明包括以下步骤：输入更宽的动态范围数字图像 数据，生成图像数据的强度级别的直方图，通过累积直方图生成直方图均衡LUT，参考直方图均衡LUT生成视觉特征LUT，通过组合直方图均衡LUT和视觉特征来生成组合LUT LUT，并且校正图像数据。

公开(公告)号：US20060055794A1

公开(公告)日：2006-03-16

申请号：US10514366

申请日：2003-04-06

申请人： Nobuyuki Sato ,  Ken Nakajima ,  Katsuaki Hirota

发明人： Nobuyuki Sato ,  Ken Nakajima ,  Katsuaki Hirota

IPC分类号： H04N5/228

CPC分类号： H04N5/23245 ,  H04N5/232 ,  H04N5/3456 ,  H04N5/772 ,  H04N5/781 ,  H04N5/85 ,  H04N5/907 ,  H04N9/045 ,  H04N9/04511

摘要： The present invention relates to apparatuses and methods for image processing, recording media, and programs in which extraction processing utilizing all pixels can be conducted. When a horizontal-component low-pass filter performs (1, 0, 1, 0, 1)/3 filtering with one of the green pixels in the first line as a target pixel, green pixels are multiplied by 1, red pixels are multiplied by 0, and the sum of the pixel values is divided by 3. As a result, a simple average of the target pixel and the adjacent green pixels is calculated. When one of the red pixels in the first line is defined as a target pixel, a simple average of the target pixel and the adjacent red pixels is calculated in the same manner. Similarly, green and blue pixels in the second line are filtered. Every third pixel of the horizontal components is then extracted in a 1/3 horizontal-extraction unit to generate an extracted-pixel group composed of pixels each having the simple-average value of every third pixel as a target pixel and the adjacent pixels of the same color. The present invention is applicable to digital cameras.

摘要翻译： 本发明涉及用于图像处理，记录介质和程序的装置和方法，其中可以进行利用所有像素的提取处理。 当水平分量低通滤波器以第一行中的一个绿色像素作为目标像素执行（1,0,1,0,1）/ 3滤波时，绿色像素乘以1，红色像素乘以 乘以0，并且将像素值的和除以3.结果，计算目标像素和相邻绿色像素的简单平均值。 当第一行中的一个红色像素被定义为目标像素时，以相同的方式计算目标像素和相邻红色像素的简单平均值。 类似地，第二行中的绿色和蓝色像素被过滤。 然后在1/3水平提取单元中提取水平分量的每个第三像素，以产生由每个具有每三个像素的简单平均值的像素组成的抽取像素组作为目标像素，并且相邻像素 相同的颜色。 本发明适用于数码相机。

公开(公告)号：US06996271B2

公开(公告)日：2006-02-07

申请号：US09970579

申请日：2001-10-04

申请人： Hiroaki Ono ,  Seiji Kobayashi ,  Tomoo Mitsunaga ,  Ken Nakajima ,  Chikako Sano ,  Nobuyuki Sato

发明人： Hiroaki Ono ,  Seiji Kobayashi ,  Tomoo Mitsunaga ,  Ken Nakajima ,  Chikako Sano ,  Nobuyuki Sato

IPC分类号： G06K9/00

CPC分类号： H04N1/4074 ,  G06T5/009 ,  G06T5/40 ,  H04N1/407

摘要： An apparatus and a method as well as a storage device of the present invention transform intensity levels with consideration of both features of the intensity levels in an input image and human visual characteristics, wherein the present invention includes the steps of inputting wider dynamic range digital image data, generating a histogram of intensity levels of the image data, generating a histogram equalization LUT by cumulating the histogram, generating a visual characteristics LUT with reference to the histogram equalization LUT, generating a combined LUT by combining the histogram equalization LUT and the visual characteristics LUT, and correcting the image data.

公开(公告)号：US07751619B2

公开(公告)日：2010-07-06

申请号：US12264500

申请日：2008-11-04

申请人： Isao Kawanishi ,  Miyuki Okada ,  Nobuyuki Sato ,  Ken Nakajima

发明人： Isao Kawanishi ,  Miyuki Okada ,  Nobuyuki Sato ,  Ken Nakajima

IPC分类号： G06K9/00 ,  G06K9/40

CPC分类号： H04N5/243 ,  H04N5/217 ,  H04N5/23296 ,  H04N9/646

摘要： 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.

摘要翻译： 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。