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1. 发明授权

US08023014B2 Method and apparatus for compensating image sensor lens shading 有权
标题翻译：用于补偿图像传感器镜头遮蔽的方法和装置
公开(公告)号：US08023014B2
公开(公告)日：2011-09-20
申请号：US11573885
申请日：2004-12-07
申请人： Dong-yong Kim , Yo-Hwan Noh
发明人： Dong-yong Kim , Yo-Hwan Noh
IPC分类号： H04N9/64 , H04N5/225 , H04N5/228
CPC分类号： H04N5/217 , C12N9/0071 , C12N15/8243 , C12P17/181
摘要： The invention relates to a method and apparatus for compensating the lens shading phenomenon in image sensor. The invention first stores an inputted compensation reference value, identifies a center pixel using digital image signals received sequentially in correspondence to each pixel from a sensor, generates analysis data corresponding to each pixel, generates and stores block compensation values for blocks grouped according to the distance from the center pixel, calculates the distance from a compensation target pixel to the center pixel, calculates a compensation value corresponding to the compensation target pixel using the block compensation value corresponding to the distance, and generates for output correction pixel data by aggregating analysis data and the compensation value corresponding to the compensation target pixel. Thus, the invention allows the maintaining of colors as close as possible to the original through the respective compensation of RGB which takes into consideration the respective characteristics of the color filters and through the respective compensation of gain and level for the disparity in transmissivity according to position.
摘要翻译：本发明涉及一种用于补偿图像传感器中的透镜遮蔽现象的方法和装置。本发明首先存储输入的补偿参考值，使用从传感器对应于每个像素顺序地接收的数字图像信号识别中心像素，生成与每个像素对应的分析数据，生成并存储根据距离分组的块的块补偿值从中心像素计算从补偿目标像素到中心像素的距离，使用与距离对应的块补偿值来计算与补偿对象像素对应的补偿值，并通过聚合分析数据生成输出校正像素数据，对应于补偿目标像素的补偿值。因此，本发明允许通过相应的RGB补偿来保持颜色尽可能接近于原始的颜色，RGB补偿考虑到滤色器的各自的特性，并且通过相应的增益和水平的补偿，根据位置的透射率的差异。

2. 发明申请

US20080043117A1 Method and Apparatus for Compensating Image Sensor Lens Shading 有权
标题翻译：用于补偿图像传感器镜头遮光的方法和装置
公开(公告)号：US20080043117A1
公开(公告)日：2008-02-21
申请号：US11573885
申请日：2004-12-07
申请人： Dong-yong Kim , Yo-Hwan Noh
发明人： Dong-yong Kim , Yo-Hwan Noh
IPC分类号： H04N9/73
CPC分类号： H04N5/217 , C12N9/0071 , C12N15/8243 , C12P17/181
摘要： The invention relates to a method and apparatus for compensating the lens shading phenomenon in image sensor. The invention first stores an inputted compensation reference value, identifies a center pixel using digital image signals received sequentially in correspondence to each pixel from a sensor, generates analysis data corresponding to each pixel, generates and stores block compensation values for blocks grouped according to the distance from the center pixel, calculates the distance from a compensation target pixel to the center pixel, calculates a compensation value corresponding to the compensation target pixel using the block compensation value corresponding to the distance, and generates for output correction pixel data by aggregating analysis data and the compensation value corresponding to the compensation target pixel. Thus, the invention allows the maintaining of colors as close as possible to the original through the respective compensation of RGB which takes into consideration the respective characteristics of the color filters and through the respective compensation of gain and level for the disparity in transmissivity according to position.
摘要翻译：本发明涉及一种用于补偿图像传感器中的透镜遮蔽现象的方法和装置。本发明首先存储输入的补偿参考值，使用从传感器对应于每个像素顺序地接收的数字图像信号识别中心像素，生成与每个像素对应的分析数据，生成并存储根据距离分组的块的块补偿值从中心像素计算从补偿目标像素到中心像素的距离，使用与距离对应的块补偿值来计算与补偿对象像素对应的补偿值，并通过聚合分析数据生成输出校正像素数据，对应于补偿目标像素的补偿值。因此，本发明允许通过相应的RGB补偿来保持颜色尽可能接近于原始的颜色，RGB补偿考虑到滤色器的各自的特性，并且通过相应的增益和水平的补偿，根据位置的透射率的差异。

3. 发明授权

US07999867B2 Image edge detection apparatus and method, image sharpness emphasizing apparatus and method, recorded meduim recorded the program performing it 有权
标题翻译：图像边缘检测装置和方法，图像清晰度强调装置和方法，记录媒体记录执行它的程序
公开(公告)号：US07999867B2
公开(公告)日：2011-08-16
申请号：US12307054
申请日：2007-06-29
申请人： Yo-Hwan Noh
发明人： Yo-Hwan Noh
IPC分类号： H04N5/208 , H04N5/262 , H04N9/64 , G06K9/40
CPC分类号： H04N1/4092 , G06T5/003 , G06T5/008 , G06T5/20 , G06T5/50 , G06T7/13 , G06T2207/20012 , G06T2207/20192 , H04N1/401
摘要： The present invention relates to an apparatus for and a method of providing a sharper image by preventing the deterioration of an image caused by the difference in dynamic ranges of a center part and a surrounding part of the image photographed by an image sensor or by the difference of lens resolution. In accordance with an embodiment of the present invention, an image edge detection apparatus and a method thereof, a sharpness emphasis apparatus and a method thereof, and a recoding medium recorded with a program performing the method can acquire the sharpness and quality of a desired image by detecting an edge of a surrounding part by use of an edge detection filter having a different filter area size and/or a weight of a computed edge value in a center part and the surrounding part, respectively, of the image, and then by giving a weight to the detected edge.
摘要翻译：本发明涉及一种通过防止由图像传感器拍摄的图像的中心部分和周围部分的动态范围的差异引起的图像劣化或通过差异来提供更清晰图像的装置和方法的镜头分辨率。根据本发明的实施例，图像边缘检测装置及其方法，锐度强调装置及其方法以及记录有执行该方法的程序的记录介质可以获得期望图像的清晰度和质量通过使用分别在图像的中心部分和周围部分中计算出的边缘值的不同滤波器面积大小和/或重量的边缘检测滤波器来检测周围部分的边缘，然后通过给出对检测到的边缘的重量。

4. 发明申请

US20090256928A1 Method and device for detecting color temperature 有权
标题翻译：检测色温的方法和装置
公开(公告)号：US20090256928A1
公开(公告)日：2009-10-15
申请号：US11910989
申请日：2006-03-02
申请人： Yo-Hwan Noh , Hwang-young So
发明人： Yo-Hwan Noh , Hwang-young So
IPC分类号： H04N9/73
CPC分类号： G01J3/46 , G01J3/462 , G01J2003/466 , H04N9/735
摘要： A method for detecting color temperature and an apparatus thereof are disclosed. According to the present invention, the apparatus for detecting color temperature converts RGB color information, generated by interpolating an image signal sequentially inputted in units of pixel from an image sensor, to a three-dimensional coordinate value of luminance, R-G color difference information, and B-G color difference information, and then renews the added value per color, if included in a filtering zone corresponding to a characteristic curve of the image sensor. Then, an average value per color is generated in units of frame, and the compensation rate per color is determined such that the average value per color becomes identical to each other. With the present invention, accurate colors can be displayed by detecting the color temperature of the current light source and correcting the distorted color information.
摘要翻译：公开了一种检测色温的方法及其装置。根据本发明，用于检测色温的装置将通过将从图像传感器单位依次输入的图像信号内插的RGB颜色信息转换为亮度的三维坐标值，RG色差信息和 BG色差信息，然后如果包含在与图像传感器的特性曲线对应的滤波区域中，则更新每个颜色的附加值。然后，以帧为单位产生每种颜色的平均值，并且确定每种颜色的补偿率使得每种颜色的平均值彼此相同。利用本发明，可以通过检测当前光源的色温并校正失真的颜色信息来显示准确的颜色。

5. 发明申请

US20090190853A1 IMAGE NOISE REDUCTION APPARATUS AND METHOD, RECORDED MEDIUM RECORDED THE PROGRAM PERFORMING IT 审中-公开
标题翻译：图像噪声减少装置和方法，记录的记录记录的程序执行
公开(公告)号：US20090190853A1
公开(公告)日：2009-07-30
申请号：US12307060
申请日：2007-08-10
申请人： Yo-Hwan Noh
发明人： Yo-Hwan Noh
IPC分类号： G06K9/40
CPC分类号： H04N5/3572 , H04N1/409 , H04N5/357
摘要： An apparatus and a method of reducing a noise component existed in a surrounding part of an image photographed in an image sensor. According to an aspect of the present invention, an apparatus differentially reducing a noise of an image according to an area of the image includes a filter area selecting unit, selecting a filter area including a plurality of adjacent pixels based on an object pixel; and a noise reducing unit, computing pixel data of the object by using pixel data of the plurality of adjacent pixels in the filter area, whereas the filter area selecting unit determines the size of the filter area according to the distance between the object pixel and a center pixel of the image. The present invention can prevent a noise component of a surrounding part from being amplified by using a different low pass filter in a center part and a surrounding part of an image and can acquire the resolution and quality of the desired image.
摘要翻译：在图像传感器中拍摄的图像的周围部分中存在减少噪声分量的装置和方法。根据本发明的一个方面，根据图像的区域差分地降低图像的噪声的装置包括：滤波器区域选择单元，基于对象像素选择包括多个相邻像素的滤波器区域; 以及噪声降低单元，通过使用所述滤波器区域中的所述多个相邻像素的像素数据来计算所述对象的像素数据，而所述滤波器区域选择单元根据所述对象像素与所述滤波器区域之间的距离来确定所述滤波器区域的大小图像的中心像素。本发明可以通过在图像的中心部分和周围部分使用不同的低通滤波器来防止周围部分的噪声分量被放大，并且可以获得期望图像的分辨率和质量。

6. 发明申请

US20080291302A1 Lens Shading Compensation Apparatus and Method, and Image Processor Using the Same 有权
标题翻译：镜头阴影补偿装置和方法，以及使用其的图像处理器
公开(公告)号：US20080291302A1
公开(公告)日：2008-11-27
申请号：US12159361
申请日：2006-12-28
申请人： Yo-Hwan Noh
发明人： Yo-Hwan Noh
IPC分类号： H04N9/64
CPC分类号： H04N5/217 , H04N9/045
摘要： Disclosed are a lens shading compensation apparatus and a lens shading compensation method in an image sensor that compensate the difference in signal amplitude according to the position of pixels to preserve the quality of a primitive image. The lens shading compensation apparatus includes a pixel value analyzing part, an auto exposure value setting part, a central pixel detecting part, a table generating part, a pixel location calculating part, a mask image generating part and a compensation part. The above apparatus and method perform a color interpolation individually for red, green and blue, and then compensate a lens shading image for each color in accordance with its characteristics. Also the above apparatus and method can analyze and compensate a lens shading phenomenon without considering other colors or being interrupted by other colors.
摘要翻译：公开了一种图像传感器中的透镜阴影补偿装置和透镜阴影补偿方法，其根据像素的位置来补偿信号幅度的差异，以保持原始图像的质量。透镜阴影补偿装置包括像素值分析部，自动曝光值设定部，中央像素检测部，表生成部，像素位置计算部，掩模图像生成部和补偿部。上述装置和方法分别对红色，绿色和蓝色进行颜色插值，然后根据其特性补偿每种颜色的透镜遮蔽图像。此外，上述装置和方法可以分析和补偿镜片遮蔽现象，而不考虑其他颜色或被其他颜色中断。

7. 发明申请

US20080192130A1 Method And Apparatus For Compensating Black Level By Dark Current Of Image Sensor 审中-公开
标题翻译：用于通过图像传感器的暗电流补偿黑电平的方法和装置
公开(公告)号：US20080192130A1
公开(公告)日：2008-08-14
申请号：US11911007
申请日：2005-11-16
申请人： Yo-Hwan Noh
发明人： Yo-Hwan Noh
IPC分类号： H04N9/64
CPC分类号： H04N5/361
摘要： The present invention is directed to a method and an apparatus for compensating for a black level of an image sensor. The apparatus for compensating for a black level comprises: an optical black area detecting unit, detecting a pixel located in an optical black area, the pixel being among a digital image signal received from the sensor unit; a pixel data analyzing unit, summing pixel data of the pixel detected by the optical black area detecting unit to a pixel data sum; and a compensated data generating unit, generating compensated pixel data corresponding to the pixel data through a matching graph generated using a normalized value. With the present invention, the black level caused by a dark current can be compensated, and the noise caused by a dark current can be removed, while maintaining the dynamic range.
摘要翻译：本发明涉及一种用于补偿图像传感器的黑色电平的方法和装置。用于补偿黑色电平的装置包括：光学黑色区域检测单元，检测位于光学黑色区域中的像素，该像素是从传感器单元接收的数字图像信号; 像素数据分析单元，将由所述光学黑色区域检测单元检测的像素的像素数据与像素数据和相加; 以及补偿数据生成单元，通过使用归一化值生成的匹配图来生成与像素数据对应的补偿像素数据。利用本发明，可以补偿由暗电流引起的黑电平，并且可以在保持动态范围的同时消除由暗电流引起的噪声。

8. 发明申请

US20080079826A1 APPARATUS FOR PROCESSING DEAD PIXEL 有权
标题翻译：用于处理死像素的装置
公开(公告)号：US20080079826A1
公开(公告)日：2008-04-03
申请号：US11537722
申请日：2006-10-02
申请人： Yo-Hwan Noh
发明人： Yo-Hwan Noh
IPC分类号： H04N9/64
CPC分类号： H04N5/3675 , H04N5/367
摘要： The present invention is related to a method and an apparatus for processing a dead pixel, more specifically to a method and an apparatus thereof for detecting and compensating a dead pixel that can maintain a good image quality by reducing image distortion and deterioration. With the present invention, the distortion of an image, caused by erroneously classifying a normal pixel of an inputted image as a dead pixel, is significantly reduced, thereby improving the quality of a processed image. Moreover, based on the characteristics of the inputted image, the algorithm and accuracy of detecting a dead pixel can be adjusted.
摘要翻译：本发明涉及一种用于处理死像素的方法和装置，更具体地涉及一种用于检测和补偿通过减少图像失真和劣化可以保持良好图像质量的死像素的方法和装置。利用本发明，通过将输入图像的正常像素错误地分类为死像素而导致的图像失真显着减少，从而提高了处理图像的质量。此外，基于输入图像的特性，可以调整算法和检测死像素的精度。

9. 发明授权

US08049795B2 Lens shading compensation apparatus and method, and image processor using the same 有权
标题翻译：镜头阴影补偿装置和方法，以及使用其的图像处理器
公开(公告)号：US08049795B2
公开(公告)日：2011-11-01
申请号：US12159361
申请日：2006-12-28
申请人： Yo-Hwan Noh
发明人： Yo-Hwan Noh
IPC分类号： H04N9/64 , H04N5/217 , H04N5/228 , H04N5/225 , G02B13/16 , G06K9/00 , G06K9/40
CPC分类号： H04N5/217 , H04N9/045
摘要： Disclosed are a lens shading compensation apparatus and a lens shading compensation method in an image sensor that compensate the difference in signal amplitude according to the position of pixels to preserve the quality of a primitive image. The lens shading compensation apparatus includes a pixel value analyzing part, an auto exposure value setting part, a central pixel detecting part, a table generating part, a pixel location calculating part, a mask image generating part and a compensation part. The above apparatus and method perform a color interpolation individually for red, green and blue, and then compensate a lens shading image for each color in accordance with its characteristics. Also the above apparatus and method can analyze and compensate a lens shading phenomenon without considering other colors or being interrupted by other colors.
摘要翻译：公开了一种图像传感器中的透镜阴影补偿装置和透镜阴影补偿方法，其根据像素的位置来补偿信号幅度的差异，以保持原始图像的质量。透镜阴影补偿装置包括像素值分析部，自动曝光值设定部，中央像素检测部，表生成部，像素位置计算部，掩模图像生成部和补偿部。上述装置和方法分别对红色，绿色和蓝色进行颜色插值，然后根据其特性补偿每种颜色的透镜遮蔽图像。此外，上述装置和方法可以分析和补偿镜片遮蔽现象，而不考虑其他颜色或被其他颜色中断。

10. 发明授权

US08018499B2 Image processing method and device using different clock rates for preview and capture modes 有权
标题翻译：图像处理方法和设备使用不同的时钟速率进行预览和捕获模式
公开(公告)号：US08018499B2
公开(公告)日：2011-09-13
申请号：US12092941
申请日：2006-05-29
申请人： Yo-Hwan Noh
发明人： Yo-Hwan Noh
IPC分类号： H04N5/228
CPC分类号： H04N19/60
摘要： An image processing method and a device thereof are disclosed. In an image signal processor of the present invention, a process clock rate or an output clock rate for a preview mode is applied differently from a process clock rate or an output clock rate for a capture mode. When performing the capture mode, however, the process clock rate can be controlled to be the same as or larger than the output clock rate. With the present invention, the lagging can be reduced during the image processing.
摘要翻译：公开了一种图像处理方法及其装置。在本发明的图像信号处理器中，用于预览模式的处理时钟速率或输出时钟速率与捕捉模式的处理时钟速率或输出时钟速率不同地被应用。然而，当执行捕捉模式时，可以将处理时钟速率控制为与输出时钟速率相同或更大。利用本发明，在图像处理期间可以减小滞后。

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