公开(公告)号：US20120281133A1

公开(公告)日：2012-11-08

申请号：US13447320

申请日：2012-04-16

申请人： Teppei Kurita ,  Tomoo Mitsunaga ,  Kensei Jo ,  Shun Kaizu

发明人： Teppei Kurita ,  Tomoo Mitsunaga ,  Kensei Jo ,  Shun Kaizu

IPC分类号： H04N5/235

CPC分类号： G06T5/007 ,  G06T5/50 ,  G06T2207/10144 ,  G06T2207/20208 ,  G06T2207/20221 ,  H04N5/23254 ,  H04N5/2353 ,  H04N5/2355 ,  H04N5/3535

摘要： A moving subject detection map is generated by performing moving subject region determination based on input image information from an image capture portion, and is used to set an exposure pattern for a moving subject detected pixel region. The exposure pattern is cyclically arranged with multiple different exposure times. The exposure time for a stationary subject region is set according to the brightness of the subject. Regarding an image captured based on the exposure time control, an output image is generated by computing pixel values for a moving subject region, using pixel value combination processing that utilizes the pixel values of pixels with a plurality of different exposure times being set, and by computing pixel values for the stationary subject region by multiplying a gain according to the exposure time. This achieves the acquisition of a dynamic range image while keeping deterioration of the resolution to a minimum.

摘要翻译： 通过基于来自图像拍摄部分的输入图像信息执行移动对象区域确定来生成移动被摄体检测图，并且用于设置用于移动被摄体检测像素区域的曝光图案。 曝光图案循环布置有多个不同的曝光时间。 根据被摄体的亮度设定静止被摄体区域的曝光时间。 关于基于曝光时间控制拍摄的图像，通过使用利用具有多个不同曝光时间的像素的像素值进行设定的像素值组合处理，并且通过 通过根据曝光时间乘以增益来计算静止被摄体区域的像素值。 这实现了将分辨率降低到最小的动态范围图像的获取。

公开(公告)号：US20120269455A1

公开(公告)日：2012-10-25

申请号：US13442575

申请日：2012-04-09

申请人： Tomoo Mitsunaga ,  Hiroaki Takahashi

发明人： Tomoo Mitsunaga ,  Hiroaki Takahashi

IPC分类号： G06K9/40

CPC分类号： G06T3/4007 ,  G06T2207/20192

摘要： A normal-phase candidate position selection unit designates a pixel on a horizontal or vertical line in a position separated by two lines from a target position of an input image as a normal-phase candidate pixel, which is a candidate for a pixel at which jaggies are in the same phase as a pixel of the target position. A reverse-phase candidate position selection unit designates a pixel between the target position in the input image and the normal-phase candidate pixel as a reverse-phase candidate pixel. The weight value calculation unit calculates a weight value based on a degree of similarity between an image adjacent to the target position and an image adjacent to the normal-phase candidate pixel. The weighted expected value calculation unit performs weighted addition of reverse-phase candidate pixels using the weight value and generates a reverse-phase image by reversing only the phase of the jaggies in the input image.

摘要翻译： 正相候选位置选择单元将与从输入图像的目标位置分开的两行的位置的水平或垂直线上的像素指定为作为候选像素的候选像素的正常相位候选像素 与目标位置的像素处于相同的相位。 反相候选位置选择单元将输入图像中的目标位置与正相候选像素之间的像素指定为反相候选像素。 权重值计算单元基于与目标位置相邻的图像与与正常相位候选像素相邻的图像之间的相似度来计算权重值。 加权期望值计算单元使用加权值执行反相候选像素的加权相加，并且通过仅反转输入图像中的锯齿相位来产生反相图像。

公开(公告)号：US07924321B2

公开(公告)日：2011-04-12

申请号：US10886746

申请日：2004-07-07

申请人： Shree K. Nayar ,  Tomoo Mitsunaga

发明人： Shree K. Nayar ,  Tomoo Mitsunaga

IPC分类号： H04N5/235 ,  H04N9/73

CPC分类号： H04N5/2355 ,  H04N5/235

摘要： Apparatus and methods are provided for obtaining high dynamic range images using a low dynamic range image sensor. The scene is exposed to the image sensor in a spatially varying manner. A variable-transmittance mask, which is interposed between the scene and the image sensor, imposes a spatially varying attenuation on the scene light incident on the image sensor. The mask includes light transmitting cells whose transmittance is controlled by application of suitable control signals. The mask is configured to generate a spatially varying light attenuation pattern across the image sensor. The image frame sensed by the image sensor is normalized with respect to the spatially varying light attenuation pattern. The normalized image data can be interpolated to account for image sensor pixels that are either under or over exposed to enhance the dynamic range of the image sensor.

摘要翻译： 提供了使用低动态范围图像传感器获得高动态范围图像的装置和方法。 场景以空间变化的方式暴露于图像传感器。 介于场景和图像传感器之间的可变透射掩模对入射在图像传感器上的场景光强加空间变化的衰减。 掩模包括通过施加适当的控制信号来控制透光率的透光单元。 掩模被配置为在图像传感器上产生空间变化的光衰减图案。 由图像传感器感测的图像帧相对于空间变化的光衰减图案被归一化。 可以对归一化图像数据进行内插，以考虑到暴露于或超过曝光的图像传感器像素，以增强图像传感器的动态范围。

公开(公告)号：US07899266B2

公开(公告)日：2011-03-01

申请号：US11500386

申请日：2006-08-08

申请人： Tomoo Mitsunaga

发明人： Tomoo Mitsunaga

IPC分类号： G06K9/00 ,  G06K9/36 ,  G06K9/40 ,  G06K1/00 ,  G06F15/00 ,  H04N1/40 ,  H04N5/202 ,  H04N5/00 ,  G03F3/08

CPC分类号： H04N5/20 ,  H04N5/57 ,  H04N5/772 ,  H04N5/907 ,  H04N9/69

摘要： An image processing apparatus tone-compresses input luminance values representing luminance values of an input image. The image processing apparatus includes a conversion-curve calculator configured to calculate a conversion curve that is used for tone-compressing luminance values, on the basis of a distribution of the input luminance values; a global-luminance calculator configured to calculate global luminance values representing luminance values of a global-luminance image composed of low-frequency components of the input image; a tone compressor configured to tone-compress the input luminance values and the global luminance values according to the conversion curve; and a contrast corrector configured to correct contrast of a tone-compressed input image composed of the tone-compressed input luminance values, on the basis of a slope of the conversion curve and the tone-compressed global luminance values.

摘要翻译： 图像处理装置对表示输入图像的亮度值的输入亮度值进行色调压缩。 图像处理装置包括转换曲线计算器，被配置为基于输入亮度值的分布来计算用于色调压缩亮度值的转换曲线; 全局亮度计算器，被配置为计算表示由输入图像的低频分量组成的全局亮度图像的亮度值的全局亮度值; 音调压缩器，被配置为根据转换曲线对输入亮度值和全局亮度值进行色调压缩; 以及对比度校正器，被配置为基于转换曲线的斜率和色调压缩的全局亮度值来校正由色调压缩输入亮度值组成的色调压缩输入图像的对比度。

公开(公告)号：US07791652B2

公开(公告)日：2010-09-07

申请号：US11808499

申请日：2007-06-11

申请人： Tomoo Mitsunaga

发明人： Tomoo Mitsunaga

IPC分类号： H04N5/262 ,  H04N9/68 ,  H04N5/208 ,  H04N5/235 ,  H04N5/238 ,  G06K9/00 ,  G06K15/00

CPC分类号： H04N5/2351 ,  G06K9/4642 ,  H04N1/4092

摘要： An image processing apparatus includes: a contrast area detector detecting a partial area from among partial areas in an input image signal as a contrast area, the input image signal being formed by a plurality of pixels, the contrast area being a partial area in which contrast of an input luminance indicative of a luminance of the input image signal is greater than a predetermined value; a luminance distributor distributing the input luminance in the contrast area into a bright-side luminance corresponding to a bright side of the input luminance and a dark-side luminance corresponding to a dark side of the input luminance; and a boundary luminance value generator generating a boundary luminance value between the bright-side luminance and the dark-side luminance on the basis of the distributions of the bright-side luminance and the dark-side luminance.

摘要翻译： 图像处理装置包括：对比度区域检测器，检测作为对比区域的输入图像信号中的部分区域中的部分区域，所述输入图像信号由多个像素形成，所述对比度区域是对比度区域 指示输入图像信号的亮度的输入亮度大于预定值; 将对比度区域中的输入亮度分配为对应于输入亮度的亮侧的亮度亮度和对应于输入亮度的暗侧的暗侧亮度的亮度分配器; 以及边界亮度值发生器，其基于亮侧亮度和暗侧亮度的分布来产生亮侧亮度和暗侧亮度之间的边界亮度值。

公开(公告)号：US07570390B2

公开(公告)日：2009-08-04

申请号：US10507274

申请日：2003-12-10

申请人： Tomoo Mitsunaga

发明人： Tomoo Mitsunaga

IPC分类号： G06F15/00 ,  G06K1/00 ,  H04N1/60 ,  G06K15/00 ,  H04N1/405

CPC分类号： H04N1/3935 ,  H04N1/407 ,  H04N5/20 ,  H04N9/68

摘要： The present invention relates to an image processing apparatus and a method, and in particular to an image processing apparatus and a method preferably applicable to conversion of a wide dynamic-range image having a dynamic range of pixel values wider than the normal one to a narrow dynamic-range image having a narrower dynamic range of pixel values, and to enhancement of contrast. In step S1, an input wide-DR luminance image of the current frame is converted into a narrow-DR luminance image based on the intermediate information calculated for the previous frame's wide-DR luminance image. In step S2, the stored intermediate information of the previous frame is updated using the calculated intermediate information. In step S3, it is determined if there is any succeeding frame. If there is the succeeding frame, the process returns to step S1 and processes thereafter are repeated. The present invention is applicable to a digital video camera and the like.

摘要翻译： 图像处理装置和方法技术领域本发明涉及一种图像处理装置和方法，特别涉及一种图像处理装置和方法，该图像处理装置和方法优选地适用于将具有比正常范围宽的像素值的动态范围的宽动态范围图像的转换为窄 具有较窄的像素值的动态范围的动态范围图像，以及对比度的增强。 在步骤S1中，基于针对前一帧的宽DR亮度图像计算的中间信息，将当前帧的输入宽DR亮度图像转换为窄DR亮度图像。 在步骤S2中，使用所计算的中间信息来更新所存储的前一帧的中间信息。 在步骤S3中，确定是否存在任何后续帧。 如果存在后续帧，则处理返回到步骤S1，然后重复其后的处理。 本发明可应用于数字摄像机等。

公开(公告)号：US20090006773A1

公开(公告)日：2009-01-01

申请号：US11572331

申请日：2006-05-22

申请人： Yuji Yamaguchi ,  Masatoshi Imai ,  Toshiharu Noda ,  Naosuke Asari ,  Tomoo Mitsunaga ,  Mitsuharu Ohki ,  Kazumasa Ito ,  Hidetoshi Nagano ,  Sumito Arakawa ,  Kei Ito

发明人： Yuji Yamaguchi ,  Masatoshi Imai ,  Toshiharu Noda ,  Naosuke Asari ,  Tomoo Mitsunaga ,  Mitsuharu Ohki ,  Kazumasa Ito ,  Hidetoshi Nagano ,  Sumito Arakawa ,  Kei Ito

IPC分类号： G06F12/00

CPC分类号： G06F15/80 ,  G06T1/20

摘要： A signal processing apparatus able to raise a processing capability in processing accompanying access to a storing means is provided. Stream control units (SCU) 203_0 to 203_3 access data at an external memory system or local memories 204_0 to 204_3 according to a thread under control from a host processor. Processor units (PU) arrays 202_0 to 202_3 perform image processing by a different thread from the thread of the SCUs 203_0 to 203_3.

摘要翻译： 提供一种能够提高伴随访问存储装置的处理中的处理能力的信号处理装置。 流控制单元（SCU）203_0至203_3根据来自主处理器的控制的线程在外部存储器系统或本地存储器204_0至204_3处访问数据。 处理器单元（PU）阵列202_0至202_3通过与SCU 203_0至203_3的线程不同的线程执行图像处理。

公开(公告)号：US20080247671A1

公开(公告)日：2008-10-09

申请号：US12057211

申请日：2008-03-27

申请人： Fumihito YASUMA ,  Tomoo Mitsunaga

发明人： Fumihito YASUMA ,  Tomoo Mitsunaga

IPC分类号： G06K9/32

CPC分类号： H04N9/045

摘要： An image processing device includes: an interpolation unit configured to perform interpolation along each of a plurality of directions in a neighbor region of a predetermined pixel of interest in an input image, and generate interpolation values for each; a chroma signal alias intensity calculating unit configured to calculate alias intensities of chroma signals from interpolation values of each of the plurality of directions from the interpolation unit; and a direction evaluation unit configured to generate evaluation values corresponding to each of the plurality of directions, based on the alias intensity of each of the chroma signals of the plurality of directions from the chroma signal alias intensity calculating unit.

摘要翻译： 图像处理装置包括：内插单元，被配置为在输入图像中的感兴趣的预定像素的相邻区域中的多个方向中的每一个上执行内插，并且生成每个的内插值; 色度信号别名强度计算单元，被配置为从所述插值单元计算来自所述多个方向中的每一个的插值的色度信号的别名强度; 以及方向评估单元，被配置为基于来自所述色度信号别名强度计算单元的所述多个方向的每个色度信号的别名强度，生成与所述多个方向中的每一个相对应的评估值。

公开(公告)号：US20080043120A1

公开(公告)日：2008-02-21

申请号：US11808499

申请日：2007-06-11

申请人： Tomoo Mitsunaga

发明人： Tomoo Mitsunaga

IPC分类号： H04N9/68

CPC分类号： H04N5/2351 ,  G06K9/4642 ,  H04N1/4092

摘要： An image processing apparatus includes: a contrast area detector detecting a partial area from among partial areas in an input image signal as a contrast area, the input image signal being formed by a plurality of pixels, the contrast area being a partial area in which contrast of an input luminance indicative of a luminance of the input image signal is greater than a predetermined value; a luminance distributor distributing the input luminance in the contrast area into a bright-side luminance corresponding to a bright side of the input luminance and a dark-side luminance corresponding to a dark side of the input luminance; and a boundary luminance value generator generating a boundary luminance value between the bright-side luminance and the dark-side luminance on the basis of the distributions of the bright-side luminance and the dark-side luminance.

摘要翻译： 图像处理装置包括：对比度区域检测器，检测作为对比区域的输入图像信号中的部分区域中的部分区域，所述输入图像信号由多个像素形成，所述对比度区域是对比度区域 指示输入图像信号的亮度的输入亮度大于预定值; 将对比度区域中的输入亮度分配为对应于输入亮度的亮侧的亮度亮度和对应于输入亮度的暗侧的暗侧亮度的亮度分配器; 以及边界亮度值发生器，其基于亮侧亮度和暗侧亮度的分布来产生亮侧亮度和暗侧亮度之间的边界亮度值。

公开(公告)号：US20070153099A1

公开(公告)日：2007-07-05

申请号：US11640252

申请日：2006-12-18

申请人： Mitsuharu Ohki ,  Tomoo Mitsunaga ,  Shinichi Yoshimura ,  Masanori Kasai

发明人： Mitsuharu Ohki ,  Tomoo Mitsunaga ,  Shinichi Yoshimura ,  Masanori Kasai

IPC分类号： H04N9/68

CPC分类号： H04N9/045 ,  H04N5/332 ,  H04N2209/047

摘要： There is provided an image signal processing apparatus having a luminance signal producing unit which receives input of a mosaic image of a signal acquired by a wide wavelength range signal acquisition element from signals acquired by a single-plate imaging device having element arrays including a specific wavelength range signal acquisition element for acquiring a visible light signal corresponding to a specific light wavelength range and the wide wavelength range signal acquisition element for acquiring a light signal containing a visible light component and an invisible light component, and produces, as a luminance signal, a wide wavelength range signal demosaic image; and a color difference signal producing unit which receives input of a mosaic image of a signal acquired by the specific wavelength range signal acquisition element, produces a visible light range signal demosaic image, and produces a color difference signal based on the visible light range signal demosaic image.

摘要翻译： 提供了一种具有亮度信号产生单元的图像信号处理装置，该单元从具有包括特定波长的元件阵列的单板成像装置获取的信号接收由宽波长范围信号获取元件获取的信号的马赛克图像的输入 用于获取对应于特定光波长范围的可见光信号的范围信号获取元件和用于获取包含可见光分量和不可见光分量的光信号的宽波长范围信号获取元件，并且产生作为亮度信号的亮度信号 宽波长范围信号去马赛克图像; 以及色差信号产生单元，其接收由特定波长范围信号获取元件获取的信号的马赛克图像的输入，产生可见光范围信号去马赛克图像，并且基于可见光范围信号去马赛克产生色差信号 图片。