公开(公告)号：US08228397B2

公开(公告)日：2012-07-24

申请号：US12908489

申请日：2010-10-20

申请人： Tetsuya Katagiri ,  Koichi Kamon ,  Jun Takayama

发明人： Tetsuya Katagiri ,  Koichi Kamon ,  Jun Takayama

IPC分类号： H04N5/228 ,  H04N5/235 ,  H04N9/68 ,  H04N1/46 ,  G06K9/36 ,  G06K9/40 ,  G03F3/08

CPC分类号： H04N5/235

摘要： An image sensing apparatus includes: an image sensing section for sensing an image of a subject; a detector for detecting a luminance of the subject; a compressor for compressing a dynamic range of the subject image; and a controller for controlling a compression characteristic to be used in compressing the dynamic range based on a detection result of the detector.

摘要翻译： 一种图像感测装置包括：用于感测被摄体图像的图像感测部分; 用于检测被摄体的亮度的检测器; 用于压缩所述被摄体图像的动态范围的压缩器; 以及控制器，用于基于检测器的检测结果来控制用于压缩动态范围的压缩特性。

公开(公告)号：US20090059026A1

公开(公告)日：2009-03-05

申请号：US12198384

申请日：2008-08-26

申请人： Tetsuya Katagiri ,  Koichi Kamon

发明人： Tetsuya Katagiri ,  Koichi Kamon

IPC分类号： H04N5/228 ,  G06K9/40

CPC分类号： H04N19/40

摘要： In an image processing device, an image processing method, and an image pickup apparatus according to an aspect of the invention, a compression characteristic is generated based on one of multiple smoothed images to be generated based on an input image, and a compressed base component image having a smaller dynamic range than the dynamic range of a base component image is generated by using the compression characteristic. The image processing device, the image processing method, and the image pickup apparatus enable to more advantageously define a proper compression characteristic, and compress the dynamic range of the input image in a simplified manner and with high quality, as compared with the background art.

摘要翻译： 在根据本发明的一个方面的图像处理装置，图像处理方法和图像拾取装置中，基于要根据输入图像生成的多个平滑图像中的一个生成压缩特性，并且压缩基本分量 通过使用压缩特性来产生具有比基本分量图像的动态范围更小的动态范围的图像。 与背景技术相比，图像处理装置，图像处理方法和图像拾取装置能够更有利地限定适当的压缩特性，并且以简化的方式和高质量来压缩输入图像的动态范围。

公开(公告)号：US08576307B2

公开(公告)日：2013-11-05

申请号：US13055562

申请日：2009-07-21

申请人： Tetsuya Katagiri ,  Koichi Kamon

发明人： Tetsuya Katagiri ,  Koichi Kamon

IPC分类号： H04N17/00 ,  H04N5/217

CPC分类号： H04N5/35527 ,  H04N5/365 ,  H04N5/3651

摘要： To convert a pixel value obtained from a non-reference photoelectric conversion characteristic into a pixel value obtained from a reference photoelectric conversion characteristic without variation, and to prevent generation of fixed pattern noise in an image. An image sensor 3 is constituted of pixels having photoelectric conversion characteristics, in which a linear characteristic is on the low luminance side with respect to an inflection point, and a logarithmic characteristic is on the high luminance side with respect to the inflection point. A conversion information storage 68 stores, as conversion information, coefficients “c”, “d”, “e”, and “f” of two kinds of linear functions (y=c·log(x)+d, and y=e·log(x)+f), which are approximation equations expressing the logarithmic characteristic of each of the pixels, where y designates a pixel value, and x designates a luminance value of incident light. A linear converter 64 converts a pixel value obtained from the logarithmic characteristic into a pixel value obtained from the linear characteristic by using the approximation equations specified by the coefficients.

摘要翻译： 将从非参考光电转换特性获得的像素值转换为从参考光电转换特性获得的像素值而不变化，并且防止在图像中产生固定图案噪声。 图像传感器3由具有光电转换特性的像素构成，其中线性特性相对于拐点位于低亮度侧，并且对数特性在相对于拐点的高亮度侧。 转换信息存储器68存储两种线性函数（y = c·log（x）+ d，y = e）的系数“c”，“d”，“e”和“f”作为转换信息 ·log（x）+ f），其表示每个像素的对数特性的近似式，其中y表示像素值，x表示入射光的亮度值。 线性转换器64通过使用由系数指定的近似方程，将从对数特性获得的像素值转换为从线性特征获得的像素值。

公开(公告)号：US20120092537A1

公开(公告)日：2012-04-19

申请号：US13378671

申请日：2010-03-16

申请人： Tetsuya Katagiri ,  Koichi Kamon

发明人： Tetsuya Katagiri ,  Koichi Kamon

IPC分类号： H04N5/335

CPC分类号： H04N5/35527 ,  H04N5/2355 ,  H04N5/243 ,  H04N5/35518 ,  H04N5/367

摘要： An inflection point variation correction unit 641 executes a predetermined characteristic conversion processing on pixel data read by each pixel, so as to unify the photoelectric conversion characteristic of each pixel data into a linear characteristic. When the flexure start level S1 of a target pixel is smaller than an inflection point threshold Sth, and when, at the same time, a pixel value d of the pixel data read by the target pixel is smaller than a predetermined pixel threshold Dth, then an inflection point interpolation unit 642 outputs not the pixel value d′ obtained in the above mentioned characteristic conversion processing, but a pixel value d″ obtained in an interpolation processing using a pixel data read by a neighbor pixel located near the target pixel, thereby the photoelectric conversion characteristic of the pixel data read by the target pixel is converted into the linear characteristic.

摘要翻译： 拐点变化校正单元641对由每个像素读取的像素数据执行预定特性转换处理，以将每个像素数据的光电转换特性统一为线性特性。 当目标像素的弯曲开始水平S1小于拐点阈值Sth时，并且当同时由目标像素读取的像素数据的像素值d小于预定像素阈值Dth时，则 拐点插补单元642不输出在上述特性转换处理中获得的像素值d'，而是输出使用位于目标像素附近的相邻像素读取的像素数据的内插处理中获得的像素值d“，从而 由目标像素读取的像素数据的光电转换特性被转换为线性特性。

公开(公告)号：US20110037870A1

公开(公告)日：2011-02-17

申请号：US12908489

申请日：2010-10-20

申请人： Tetsuya KATAGIRI ,  Koichi Kamon ,  Jun Takayama

发明人： Tetsuya KATAGIRI ,  Koichi Kamon ,  Jun Takayama

IPC分类号： H04N5/228

CPC分类号： H04N5/235

摘要： An image sensing apparatus includes: an image sensing section for sensing an image of a subject; a detector for detecting a luminance of the subject; a compressor for compressing a dynamic range of the subject image; and a controller for controlling a compression characteristic to be used in compressing the dynamic range based on a detection result of the detector.

摘要翻译： 一种图像感测装置包括：用于感测被摄体图像的图像感测部分; 用于检测被摄体的亮度的检测器; 用于压缩所述被摄体图像的动态范围的压缩器; 以及控制器，用于基于检测器的检测结果来控制用于压缩动态范围的压缩特性。

公开(公告)号：US07791656B2

公开(公告)日：2010-09-07

申请号：US11502269

申请日：2006-08-10

申请人： Tetsuya Katagiri ,  Koichi Kamon

发明人： Tetsuya Katagiri ,  Koichi Kamon

IPC分类号： H04N5/202

CPC分类号： H04N5/243

摘要： An image sensing apparatus includes: an image sensing device for sensing light representing a subject image; a first component extractor for extracting a first component having a predetermined frequency out of a photographic image obtained by the image sensing device; a second component extractor for extracting a second component having a frequency higher than the frequency of the first component out of the photographic image; a compressor for compressing a dynamic range of the first component extracted by the first component extractor with a predetermined compression ratio; an image generator for generating an image based on a compressed first component obtained by compressing the dynamic range of the first component by the compressor, and the second component extracted by the second component extractor; and a compression correction coefficient calculator for calculating a compression correction coefficient used in compressing the first component, using the second component extracted by the second component extractor, wherein the compressor determines the compression ratio in such a manner that the larger compression correction coefficient increases the compression ratio based on the compression correction coefficient calculated by the compression correction coefficient calculator, and compresses the dynamic range of the first component based on the determined compression ratio.

摘要翻译： 图像感测装置包括：用于感测表示被摄体图像的光的图像感测装置; 第一分量提取器，用于从由所述图像感测装置获得的摄影图像中提取具有预定频率的第一分量; 第二分量提取器，用于从摄影图像中提取具有高于第一分量的频率的频率的第二分量; 压缩机，用于以预定压缩比压缩由第一分量提取器提取的第一分量的动态范围; 图像生成器，用于基于通过压缩由压缩器压缩第一分量的动态范围而获得的压缩的第一分量和由第二分量提取器提取的第二分量来生成图像; 以及压缩校正系数计算器，用于使用由所述第二分量提取器提取的所述第二分量来计算在压缩所述第一分量时使用的压缩校正系数，其中所述压缩器以这样的方式确定所述压缩比，使得所述压缩校正系数越大，所述压缩校正系数越大， 基于由压缩校正系数计算器计算的压缩校正系数的比率，并且基于所确定的压缩比来压缩第一分量的动态范围。

公开(公告)号：US20070182830A1

公开(公告)日：2007-08-09

申请号：US11699590

申请日：2007-01-29

申请人： Tetsuya Katagiri ,  Koichi Kamon ,  Jun Takayama

发明人： Tetsuya Katagiri ,  Koichi Kamon ,  Jun Takayama

IPC分类号： H04N5/228

CPC分类号： H04N5/235

摘要： An image sensing apparatus includes: an image sensing section for sensing an image of a subject; a detector for detecting a luminance of the subject; a compressor for compressing a dynamic range of the subject image; and a controller for controlling a compression characteristic to be used in compressing the dynamic range based on a detection result of the detector.

摘要翻译： 一种图像感测装置包括：用于感测被摄体图像的图像感测部分; 用于检测被摄体的亮度的检测器; 用于压缩所述被摄体图像的动态范围的压缩器; 以及控制器，用于基于检测器的检测结果来控制用于压缩动态范围的压缩特性。

公开(公告)号：US09294740B2

公开(公告)日：2016-03-22

申请号：US13702946

申请日：2011-05-23

申请人： Koichi Kamon ,  Tetsuya Katagiri

发明人： Koichi Kamon ,  Tetsuya Katagiri

IPC分类号： H04N9/04 ,  H04N5/33 ,  H04N5/355

CPC分类号： H04N9/04 ,  H04N5/332 ,  H04N5/35518 ,  H04N9/045

摘要： An imaging device is provided with an imaging element. The imaging element has a sensitive wavelength region including an infrared wavelength region, and selectively including a visible wavelength region, and is composed of at least three types of pixels having spectral sensitivities different from each other. The imaging device generates a color image, based on a luminance signal including an infrared wavelength component, and based on a color-difference signal that has been generated based on a visible wavelength component in original image data. The luminance signal including an infrared wavelength component is generated, based on a signal obtained by compressing the dynamic range of original image data including at least three types of original image components acquired by an imaging operation of the imaging element.

摘要翻译： 成像装置设置有成像元件。 成像元件具有包括红外波长区域的敏感波长区域，并且选择性地包括可见波长区域，并且由具有彼此不同的光谱灵敏度的至少三种像素构成。 成像装置基于包括红外波长分量的亮度信号，并且基于基于原始图像数据中的可见波长分量而生成的色差信号来生成彩色图像。 基于通过压缩包含通过成像元件的成像操作获取的至少三种原始图像分量的原始图像数据的动态范围获得的信号，生成包括红​​外波长分量的亮度信号。

公开(公告)号：US20130083157A1

公开(公告)日：2013-04-04

申请号：US13702961

申请日：2011-05-23

申请人： Koichi Kamon ,  Tetsuya Katagiri

发明人： Koichi Kamon ,  Tetsuya Katagiri

IPC分类号： H04N5/33

CPC分类号： H04N5/332 ,  H04N9/045

摘要： An imaging device is provided with an imaging element. The imaging element has a sensitive wavelength region including an infrared wavelength region, and selectively including a visible wavelength region, and is composed of at least three types of pixels having spectral sensitivities different from each other. The imaging device generates a luminance signal including an infrared wavelength component, a color-difference signal including a visible wavelength component, and a visible luminance signal as a luminance signal in the visible wavelength region, from original image data including at least three types of original image components obtained by an imaging operation by the imaging element; and generates a color image based on a low frequency component in the luminance signal and in the color-difference signal, and based on a low frequency component in the visible luminance signal.

摘要翻译： 成像装置设置有成像元件。 成像元件具有包括红外波长区域的敏感波长区域，并且选择性地包括可见波长区域，并且由具有彼此不同的光谱灵敏度的至少三种像素组成。 成像装置从包括至少三种类型的原始图像数据的原始图像数据生成包括红​​外波长分量，包括可见波长分量的色差信号和可见光亮度信号作为可见光波长区域中的亮度信号的亮度信号 通过成像元件的成像操作获得的图像分量; 并且基于亮度信号和色差信号中的低频分量，并且基于可见亮度信号中的低频分量来生成彩色图像。

公开(公告)号：US07990443B2

公开(公告)日：2011-08-02

申请号：US12849460

申请日：2010-08-03

申请人： Tetsuya Katagiri ,  Koichi Kamon

发明人： Tetsuya Katagiri ,  Koichi Kamon

IPC分类号： H04N5/202

CPC分类号： H04N5/243

摘要： An image sensing apparatus includes: an image sensing device for sensing light representing a subject image; a first component extractor for extracting a first component having a predetermined frequency out of a photographic image obtained by the image sensing device; a second component extractor for extracting a second component having a frequency higher than the frequency of the first component out of the photographic image; a compressor for compressing a dynamic range of the first component extracted by the first component extractor with a predetermined compression ratio; an image generator for generating an image based on a compressed first component obtained by compressing the dynamic range of the first component by the compressor, and the second component extracted by the second component extractor; and a compression correction coefficient calculator for calculating a compression correction coefficient used in compressing the first component, using the second component extracted by the second component extractor, wherein the compressor determines the compression ratio in such a manner that the larger compression correction coefficient increases the compression ratio based on the compression correction coefficient calculated by the compression correction coefficient calculator, and compresses the dynamic range of the first component based on the determined compression ratio.

摘要翻译： 图像感测装置包括：用于感测表示被摄体图像的光的图像感测装置; 第一分量提取器，用于从由所述图像感测装置获得的摄影图像中提取具有预定频率的第一分量; 第二分量提取器，用于从摄影图像中提取具有高于第一分量的频率的频率的第二分量; 压缩机，用于以预定压缩比压缩由第一分量提取器提取的第一分量的动态范围; 图像生成器，用于基于通过压缩由压缩器压缩第一分量的动态范围而获得的压缩的第一分量和由第二分量提取器提取的第二分量来生成图像; 以及压缩校正系数计算器，用于使用由所述第二分量提取器提取的所述第二分量来计算在压缩所述第一分量时使用的压缩校正系数，其中所述压缩器以这样的方式确定所述压缩比，使得所述压缩校正系数越大，所述压缩校正系数越大， 基于由压缩校正系数计算器计算的压缩校正系数的比率，并且基于所确定的压缩比来压缩第一分量的动态范围。