公开(公告)号：US5847884A

公开(公告)日：1998-12-08

申请号：US890352

申请日：1997-07-09

申请人： Koichi Kamon ,  Shinya Matsuda ,  Noriyuki Okisu

发明人： Koichi Kamon ,  Shinya Matsuda ,  Noriyuki Okisu

IPC分类号： G02B26/10 ,  H04N1/00 ,  H04N1/10 ,  G02B27/02 ,  H04N1/04

CPC分类号： H04N1/00809 ,  G02B26/101 ,  H04N1/00795 ,  H04N1/02409 ,  H04N1/1013 ,  H04N2201/0416 ,  H04N2201/0434

摘要： An image reading apparatus which reads document surfaces of open book-like documents placed on a document platen in a face upward condition, the image reading apparatus comprises; a first detector which detects a height distribution of a document surface in a main scanning direction, a second detector which detects a height distribution of the document surface in a sub-scanning direction, and a direction discrimination device for discriminating whether a placement direction of the document is a main scanning direction or a sub-scanning direction based on the height distributions.

摘要翻译： 一种图像读取装置，其以面朝上的状态读取放置在原稿台上的打开的书本文件的文件表面，图像读取装置包括： 第一检测器，其检测文件表面在主扫描方向上的高度分布;检测文档表面在副扫描方向上的高度分布的第二检测器;以及方向判别装置，用于鉴别文档表面的扫描方向 文档是基于高度分布的主扫描方向或副扫描方向。

公开(公告)号：US5969829A

公开(公告)日：1999-10-19

申请号：US933263

申请日：1997-09-18

申请人： Shinya Matsuda ,  Koichi Kamon

发明人： Shinya Matsuda ,  Koichi Kamon

IPC分类号： G03B27/62 ,  H04N1/04 ,  H04N1/10 ,  H04N1/107 ,  H04N1/193 ,  H04N1/387 ,  H04N1/40

CPC分类号： H04N1/1043 ,  H04N1/1013 ,  H04N1/387 ,  H04N1/40056 ,  H04N1/193 ,  H04N2201/0434

摘要： An image reader capable of outputting excellent quality read images, without illumination irregularities, similar to that of flat documents even when the document surface is curved as in the case of book-like documents. An image reader provided with a memory to store correction data to correct differences of illumination of each pixel of a document image, and which corrects the read information of each pixel in a document image using correction data corresponding to the measured height of a document surface among correction data stored in the memory. For one aspect, this image reader is constructed so as to correct a group of read information corresponding to a set of pixels arrayed in one direction by excluding specific frequencies among the illumination distribution from the set.

摘要翻译： 图像读取器能够输出优质的读取图像，无需照明不规则，与平面文档相似，即使当文书表面像书籍文件一样弯曲时。 一种具有存储器的图像读取器，用于存储校正数据以校正文档图像的每个像素的照明差异，并使用与文档表面的测量高度相对应的校正数据校正文档图像中的每个像素的读取信息 存储在存储器中的校正数据。 一方面，该图像读取器被构造成通过排除来自该组的照明分布中的特定频率来校正与沿一个方向排列的一组像素相对应的一组读取信息。

公开(公告)号：US5705806A

公开(公告)日：1998-01-06

申请号：US827777

申请日：1997-04-11

申请人： Shinya Matsuda ,  Koichi Kamon

发明人： Shinya Matsuda ,  Koichi Kamon

IPC分类号： H04N1/00 ,  H04N1/10 ,  H04N1/193 ,  H04N1/48 ,  H01J40/14

CPC分类号： H04N1/482 ,  H04N1/00795 ,  H04N1/1013 ,  H04N1/193 ,  H04N2201/0416 ,  H04N2201/0434 ,  H04N2201/0436

摘要： An image reading apparatus for reading documents disposed face upward on a document platen by optical scanning. The image reading apparatus comprises a color correction filter which has characteristics for shielding light of visible light range and is inserted into said imaging system on prescanning to detect the height of the document.

摘要翻译： 一种图像读取装置，用于读取通过光学扫描在文件台上面朝上设置的文档。 图像读取装置包括具有用于屏蔽可见光范围的光的特征的颜色校正滤光器，并且在预扫描上插入到所述成像系统中以检测文档的高度。

公开(公告)号：US6041146A

公开(公告)日：2000-03-21

申请号：US599380

申请日：1996-02-09

申请人： Koichi Kamon ,  Shinya Matsuda

发明人： Koichi Kamon ,  Shinya Matsuda

IPC分类号： G06T1/00 ,  H04N1/401 ,  G06K9/40

CPC分类号： H04N1/401

摘要： An image reader for reading book-like documents placed on a document platen in a face upward condition, said image reader comprises a shading reference panel provided beside the document platen which is white in color and of uniform density, an image reading device which reads the document platen on which the book-like document is placed and the shading reference panel, and outputs image data, a height detector which detects a height distribution of the book-like document, an illuminance detector which detects an illuminance irregularity in accordance with the image data corresponding to the shading reference panel, calculator which calculates shading correction data in accordance with the height distribution and the illuminance irregularity on the shading reference panel and, shading corrector which corrects the illuminance irregularity of the image data corresponding to the book-like document in accordance with the shading correction data.

摘要翻译： 一种图像阅读器，用于以面朝上的状态读取放置在原稿台上的书本文件，所述图像读取器包括设置在原稿台上的白色和均匀密度的着色参考面板，读取该图像读取装置的图像读取装置 放置书本文件的原稿台板和阴影参考面板，并输出图像数据，检测书本文件的高度分布的高度检测器，根据图像检测照度不规则的照度检测器 对应于阴影参考面板的数据，根据阴影参考面板上的高度分布和照度不规则来计算阴影校正数据的计算器，以及校正与该类似书面文档相对应的图像数据的照度不规则性的阴影校正器 根据阴影校正数据。

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：US08213063B2

公开(公告)日：2012-07-03

申请号：US11142037

申请日：2005-06-01

申请人： Koichi Kamon ,  Kazuchika Sato ,  Jun Minakuti ,  Tetuya Katagiri

发明人： Koichi Kamon ,  Kazuchika Sato ,  Jun Minakuti ,  Tetuya Katagiri

IPC分类号： H04N1/46 ,  H04N1/54 ,  H04N1/56 ,  H04N1/58 ,  H04N1/60 ,  H04N9/04 ,  H04N5/235 ,  H04N5/202 ,  G03F3/10 ,  G03B7/00 ,  G03B7/08

CPC分类号： H04N1/4074

摘要： An image sensing apparatus including an image sensor having a first area and a second area and a gradation converter for applying a gradation conversion to an image signal is provided with a gradation conversion LUT storage storing at least two kinds of gradation conversion information. The image sensing apparatus is also provided with a gradation conversion information rewriting section for rewriting the gradation conversion information into new gradation conversion information. There can be provided an image sensing apparatus capable of carrying out a precise gradation conversion even in the case that the inflection point between the first area and the second area of the image sensor constantly changes.

摘要翻译： 包括具有第一区域和第二区域的图像传感器和用于向图像信号应用灰度转换的灰度转换器的图像感测设备设置有存储至少两种灰度转换信息的灰度转换LUT存储器。 图像感测装置还设置有用于将灰度转换信息重写为新的灰度转换信息的灰度转换信息重写部分。 可以提供即使在图像传感器的第一区域和第二区域之间的拐点不断变化的情况下也能够执行精确的灰度转换的图像感测装置。

公开(公告)号：US07645978B2

公开(公告)日：2010-01-12

申请号：US12061125

申请日：2008-04-02

申请人： Koichi Kamon

发明人： Koichi Kamon

IPC分类号： H03G3/20

CPC分类号： H04N5/35572 ,  H01L27/14643 ,  H01L27/148 ,  H04N5/235 ,  H04N5/2355 ,  H04N5/35518 ,  H04N5/3765

摘要： An image sensing apparatus and an image sensing method of the invention are configured in such a manner that an image sensor having two or more different photoelectric conversion characteristics is used, a gain of image signals having the respective photoelectric conversion characteristics acquired by the image sensor is calculated based on the image signals having the respective photoelectric conversion characteristics, and gain control is performed with respect to each of the photoelectric conversion characteristics, using the calculated gain. This arrangement enables to control the imaging sensitivity without changing the dynamic range.

摘要翻译： 本发明的图像感测装置和图像感测方法被配置为使用具有两个或更多个不同的光电转换特性的图像传感器，具有由图像传感器获取的各自的光电转换特性的图像信号的增益是 基于具有各自的光电转换特性的图像信号计算，并且使用所计算的增益对每个光电转换特性执行增益控制。 这种布置使得能够在不改变动态范围的情况下控制成像灵敏度。

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：US20080251695A1

公开(公告)日：2008-10-16

申请号：US12061125

申请日：2008-04-02

申请人： Koichi Kamon

发明人： Koichi Kamon

IPC分类号： H01L27/00

CPC分类号： H04N5/35572 ,  H01L27/14643 ,  H01L27/148 ,  H04N5/235 ,  H04N5/2355 ,  H04N5/35518 ,  H04N5/3765

摘要： An image sensing apparatus and an image sensing method of the invention are configured in such a manner that an image sensor having two or more different photoelectric conversion characteristics is used, a gain of image signals having the respective photoelectric conversion characteristics acquired by the image sensor is calculated based on the image signals having the respective photoelectric conversion characteristics, and gain control is performed with respect to each of the photoelectric conversion characteristics, using the calculated gain. This arrangement enables to control the imaging sensitivity without changing the dynamic range.

摘要翻译： 本发明的图像感测装置和图像感测方法被配置为使用具有两个或更多个不同的光电转换特性的图像传感器，具有由图像传感器获取的各自的光电转换特性的图像信号的增益是 基于具有各自的光电转换特性的图像信号计算，并且使用所计算的增益对每个光电转换特性执行增益控制。 这种布置使得能够在不改变动态范围的情况下控制成像灵敏度。

公开(公告)号：US20050264683A1

公开(公告)日：2005-12-01

申请号：US11033763

申请日：2005-01-12

申请人： Koichi Kamon ,  Kazuchika Sato ,  Jun Minakuti

发明人： Koichi Kamon ,  Kazuchika Sato ,  Jun Minakuti

IPC分类号： G03B7/093 ,  H01L27/146 ,  H04N5/225 ,  H04N5/235 ,  H04N5/243 ,  H04N5/355 ,  H04N5/369 ,  H04N5/374 ,  H04N5/376 ,  H04N5/378 ,  H04N101/00

CPC分类号： H04N5/243 ,  H04N5/2351 ,  H04N5/2355

摘要： An image sensing apparatus is provided with an image sensor having a photoelectric conversion characteristic having a linear characteristic area where an electrical signal is outputted after being linearly converted in relation to an amount of an incident light and a logarithmic characteristic area where the electrical signal is outputted after being logarithmically converted in relation to the amount of the incident light; an evaluation value detector for detecting exposure evaluation values concerning an exposure control based on a luminance information of a subject; and a central control unit for controlling the exposure based on the exposure evaluation values detected by the evaluation value detector. The central control unit includes an exposure amount control parameter calculating section for controlling an exposure amount in accordance with the photoelectric conversion characteristic using the exposure evaluation values and a dynamic range control parameter calculating section for controlling a dynamic range in accordance with the photoelectric conversion characteristic using the exposure evaluation values. Accordingly, a subject image can be picked up while an optimal exposure is made for the subject and a specified dynamic range is attained.

摘要翻译： 图像传感装置具备：具有光电转换特性的图像传感器，该光电转换特性具有相对于入射光量的线性变换而输出电信号的线性特征区域和输出电信号的对数特征区域的光电转换特性 相对于入射光量进行对数转换; 评估值检测器，用于基于对象的亮度信息来检测关于曝光控制的曝光评估值; 以及中央控制单元，用于基于由评估值检测器检测到的曝光评估值来控制曝光。 中央控制单元包括曝光量控制参数计算部分，用于使用曝光评估值根据光电转换特性控制曝光量;以及动态范围控制参数计算部分，用于根据光电转换特性控制动态范围，使用 曝光评估值。 因此，可以在对被摄体进行最佳曝光并且获得指定的动态范围的同时拾取被摄体图像。