公开(公告)号：US6091460A

公开(公告)日：2000-07-18

申请号：US948589

申请日：1997-10-10

申请人： Yoshiko Hatano ,  Tadashi Kasezawa ,  Koji Okazaki ,  Takashi Shinohara ,  Hiromu Hasegawa ,  Hidetoshi Mishima

发明人： Yoshiko Hatano ,  Tadashi Kasezawa ,  Koji Okazaki ,  Takashi Shinohara ,  Hiromu Hasegawa ,  Hidetoshi Mishima

IPC分类号： G06T9/00 ,  H04N5/14 ,  H04N7/26 ,  H04N7/46

CPC分类号： H04N19/105 ,  H04N19/107 ,  H04N19/112 ,  H04N19/137 ,  H04N19/142 ,  H04N19/179 ,  H04N19/51 ,  H04N19/57 ,  H04N19/577 ,  H04N19/87 ,  H04N5/145

摘要： In an image signal encoding method for encoding an image signal using motion compensation, a motion vector is found by means of a block matching method, a first distortion SEmc of motion compensated prediction associated with the motion vector, and a second distortion SEnomc of prediction without motion compensation are detected, the motion vector is used for for inter-picture prediction encoding when SEnomc>SEmc+K, with K being a constant greater than 0, and a vector having a value zero is used, in place of the motion vector, for inter-picture prediction encoding when SEnomc.ltoreq.SEmc+K. In another aspect, a speed of motion in a sequence of pictures is detected, and for a part of the sequence of pictures detected to contain a quick motion, the prediction encoding is performed using one-way prediction encoding, and for a part of the sequence of pictures without a quick motion, prediction encoding is performed using bi-directional prediction encoding. In another aspect, the image signal is subsampled for each field, and a motion vector is determined using the field-subsampled image signal.

摘要翻译： 在用于使用运动补偿对图像信号进行编码的图像信号编码方法中，通过块匹配方法，与运动矢量相关联的运动补偿预测的第一失真SEmc以及无运动补偿预测的第二失真SEnomc，找到运动矢量 检测到运动补偿时，运动矢量用于SEnomc> SEmc + K时的画面间预测编码，其中K为大于0的常数，使用值为零的矢量代替运动矢量， 用于当SEnomc

公开(公告)号：US06480670B1

公开(公告)日：2002-11-12

申请号：US09449494

申请日：1999-11-29

申请人： Yoshiko Hatano ,  Tadashi Kasezawa ,  Koji Okazaki ,  Takashi Shinohara ,  Hiromu Hasegawa ,  Hidetoshi Mishima

发明人： Yoshiko Hatano ,  Tadashi Kasezawa ,  Koji Okazaki ,  Takashi Shinohara ,  Hiromu Hasegawa ,  Hidetoshi Mishima

IPC分类号： H04N736

CPC分类号： H04N19/105 ,  H04N5/145 ,  H04N19/107 ,  H04N19/112 ,  H04N19/137 ,  H04N19/142 ,  H04N19/179 ,  H04N19/51 ,  H04N19/57 ,  H04N19/577 ,  H04N19/87

摘要： In an image signal encoding method for encoding an image signal using motion compensation, a motion vector is found by means of a block matching method, a first distortion SEmc of motion compensated prediction associated with the motion vector, and a second distortion SEnomc of prediction without motion compensation are detected, the motion vector is used for for inter-picture prediction encoding when SEnomc>SEmc+K, with K being a constant greater than 0, and a vector having a value zero is used, in place of the motion vector, for inter-picture prediction encoding when SEnomc≦SEmc+K. In another aspect, a speed of motion in a sequence of pictures is detected, and for a part of the sequence of pictures detected to contain a quick motion, the prediction encoding is performed using one-way prediction encoding, and for a part of the sequence of pictures without a quick motion, prediction encoding is performed using bi-directional prediction encoding. In another aspect, the image signal is subsampled for each field, and a motion vector is determined using the field-subsampled image signal.

摘要翻译： 在用于使用运动补偿对图像信号进行编码的图像信号编码方法中，通过块匹配方法，与运动矢量相关联的运动补偿预测的第一失真SEmc以及无运动补偿预测的第二失真SEnomc，找到运动矢量 检测到运动补偿时，运动矢量用于SEnomc> SEmc + K时的画面间预测编码，其中K为大于0的常数，使用零值的矢量代替运动矢量， 用于当SEnomc <= SEmc + K时的画面间预测编码。 在另一方面，检测图像序列中的运动速度，并且对于被检测为包含快速运动的图像序列的一部分，使用单向预测编码执行预测编码，并且对于一部分 没有快速运动的图像序列，使用双向预测编码执行预测编码。 在另一方面，对于每个场对图像信号进行二次采样，并且使用场二次采样的图像信号来确定运动矢量。

公开(公告)号：US09195902B2

公开(公告)日：2015-11-24

申请号：US14232803

申请日：2012-07-06

申请人： Hiromu Hasegawa

发明人： Hiromu Hasegawa

IPC分类号： G06K9/36 ,  G06K9/46 ,  G06T11/00 ,  G06T7/00

CPC分类号： G06K9/4633 ,  G06T7/13 ,  G06T11/001 ,  G06T2207/20061

摘要： To detect a straight line using the Hough transform taking into consideration not only the number of points but also other properties of the straight line, the Hough transform unit performs a Hough transform on contour-enhanced binary image data. The Hough table stores a count after the Hough transform. The adjustment unit adjusts the count. The straight line detection unit detects a straight line based on the adjusted count. Additionally, to detect a straight line, independent of its direction or location in the image, for each straight line in the binary image data, the straight line calculation unit determines the intersections where that straight line cuts up the binary image data to calculate the intersection distance. The normalization unit divides the count stored in the Hough table by the intersection distance to normalize the count. The straight line detection unit detects a straight line based on the normalized count.

摘要翻译： 为了使用霍夫变换来检测直线，不仅考虑点的数量，而且考虑到直线的其他属性，霍夫变换单元对轮廓增强的二进制图像数据执行霍夫变换。 霍夫表在霍夫变换后存储一个计数。 调整单元调整计数。 直线检测单元基于经调整的计数检测直线。 另外，为了检测独立于图像中的方向或位置的直线，对于二进制图像数据中的每条直线，直线计算单元确定该直线切割二进制图像数据以计算交点的交点 距离。 归一化单元将存储在霍夫表中的计数除以交叉距离以使计数正常化。 直线检测单元基于标准化计数检测直线。

公开(公告)号：US08639054B2

公开(公告)日：2014-01-28

申请号：US12176474

申请日：2008-07-21

申请人： Hiromu Hasegawa

发明人： Hiromu Hasegawa

IPC分类号： G06K9/40

CPC分类号： G06T5/002 ,  G06T5/003 ,  G06T5/20 ,  G06T2207/10024 ,  G06T2207/20012 ,  G06T2207/20192

摘要： A correlation judgment part judges a correlation direction on each pixel. In a case where a correlation direction of a specified pixel is a vertical direction and the correlation thereof is small in any other direction, it is judged that the specified pixel is a pixel on an edge in the vertical direction. Then, a noise removal filtering operation is performed on the specified pixel by using pixels on a line in the vertical direction and an edge enhancement operation is performed by using pixels on a line in a horizontal direction.

摘要翻译： 相关判断部判断各像素的相关方向。 在指定像素的相关方向为垂直方向并且其相关性在任何其它方向上较小的情况下，判定指定像素是垂直方向上的边缘上的像素。 然后，通过使用垂直方向上的一行上的像素对指定像素执行噪声去除滤波操作，并且通过使用在水平方向上的一行上的像素来执行边缘增强操作。

公开(公告)号：US20130195179A1

公开(公告)日：2013-08-01

申请号：US13877068

申请日：2011-08-26

申请人： Toshimitsu Tatsuka ,  Hiromu Hasegawa ,  Takeaki Komuro ,  Masato Yamada

发明人： Toshimitsu Tatsuka ,  Hiromu Hasegawa ,  Takeaki Komuro ,  Masato Yamada

IPC分类号： H04N7/26

CPC分类号： H04N19/176 ,  H04N19/124 ,  H04N19/149 ,  H04N19/152

摘要： An image processor includes an encoder that performs encoding including quantization on an image signal and a controller that controls a quantization parameter in the quantization. The controller determines a quantization parameter of a currently target macroblock, based on a difference between a target amount of code for a specified number of macroblocks and an amount of code generated for a predetermined number of macroblocks processed immediately before. The controller variably sets the specified number.

摘要翻译： 图像处理器包括编码器，其执行包括对图像信号的量化的编码和控制量化中的量化参数的控制器。 控制器基于针对特定数量的宏块的目标代码量与针对刚才处理的预定数量的宏块生成的代码量之间的差异，确定当前目标宏块的量化参数。 控制器可变地设置指定的数字。

公开(公告)号：US08204105B2

公开(公告)日：2012-06-19

申请号：US11774427

申请日：2007-07-06

申请人： Hiromu Hasegawa ,  Nobuyuki Takasu ,  Mayumi Okumura ,  Akira Okamoto ,  Takashi Matsumoto ,  Norihiko Nagai

发明人： Hiromu Hasegawa ,  Nobuyuki Takasu ,  Mayumi Okumura ,  Akira Okamoto ,  Takashi Matsumoto ,  Norihiko Nagai

IPC分类号： H04B1/66 ,  H04N7/12

CPC分类号： H04N19/124 ,  H04N19/137 ,  H04N19/14 ,  H04N19/176 ,  H04N19/40 ,  H04N19/61

摘要： A quantization step determination part inputs an evaluation value (ACT_MB) indicating the dispersion in a macroblock and its average value (ACT_PIC). A subtracter obtains the difference between these values, and a multiplier multiplies the difference by raq ( 1) to obtain a converted quantization step value (Qstep_AVC). This optimizes a bit allocation in accordance with an Activity value of the macroblock, to thereby improve the quality of image.

摘要翻译： 量化步长决定部输入指示宏块中的色散的评价值（ACT_MB）及其平均值（ACT_PIC）。 减法器获得这些值之间的差值，并且乘法器将差值乘以raq（<1）以获得加权值。 接下来，加法器将加权值与源数据的平均量化步长值相加，最后，乘法器将和乘以阶跃值调整因子α（> 1），以获得转换的量化步长值（Qstep_AVC）。 这优化了根据宏块的Activity值的位分配，从而提高图像的质量。

公开(公告)号：US07995868B2

公开(公告)日：2011-08-09

申请号：US11577453

申请日：2005-10-04

申请人： Hiromu Hasegawa ,  Yusuke Nara

发明人： Hiromu Hasegawa ,  Yusuke Nara

IPC分类号： G06K9/32

CPC分类号： H04N9/045 ,  H04N2209/046

摘要： The present invention relates to an interpolation method and a filtering method which utilize a correlation between pixel signals, and it is an object of the present invention to provide a sharp and high-quality image even if an error occurs in correlation degree judgment. To accomplish the above-mentioned object, an imaging device 10 is of a single-chip type, and includes a RGB Bayer pattern color filter 11, and an image is processed in a manner to be described below. Pixel signals outputted from the imaging device 10 are inputted through a signal processing part 20 to an image processing part 30. A correlation judgment part 31 judges a correlation between the pixel signals, and an interpolation processing part 32 performs a pixel interpolation process based on a correlation result. Thus, each pixel signal becomes a perfect signal having all R, G and B color components. Filter factors for a filter 34 are determined based on the correlation result, and a filtering process is performed on the pixel signals subjected to the pixel interpolation. The filter factors are determined so as to assist the pixel interpolation process best.

摘要翻译： 本发明涉及利用像素信号之间的相关性的内插方法和滤波方法，并且即使在相关度判断中发生错误，本发明的目的也是提供清晰和高质量的图像。 为了实现上述目的，成像装置10是单芯片型的，并且包括RGB拜耳图案滤色器11，并且以下面将要描述的方式处理图像。 从成像装置10输出的像素信号通过信号处理部20输入到图像处理部30.相关判断部31判断像素信号之间的相关性，内插处理部32基于图像处理部30进行像素插值处理 相关结果。 因此，每个像素信号变成具有所有R，G和B颜色分量的完美信号。 基于相关结果确定滤波器34的滤波器因子，并且对经过像素内插的像素信号执行滤波处理。 确定滤波因子，以便最佳地辅助像素插值处理。

公开(公告)号：US20100104206A1

公开(公告)日：2010-04-29

申请号：US12408901

申请日：2009-03-23

申请人： Masahiro Moriyama ,  Yujiro Tani ,  Yusuke Mizuno ,  Hideki Daian ,  Nobuhiro Minami ,  Hiromu Hasegawa

发明人： Masahiro Moriyama ,  Yujiro Tani ,  Yusuke Mizuno ,  Hideki Daian ,  Nobuhiro Minami ,  Hiromu Hasegawa

IPC分类号： G06K9/00

CPC分类号： H04N19/436 ,  H04N19/60

摘要： An image compression apparatus performs quantization of DC component data, low-pass component data and high-pass component data which are generated by frequency conversion of still image data. An extracting part extracts additional data and coding object data which is to be entropy coded, from quantization data. An entropy coding part performs entropy coding of the coding object data stored in a coding object data memory. An additional data processing part generates a flex bit from the additional data. A pattern information generation part acquires the coding object data directly from the extracting part, to generate pattern information indicating whether the coding object data is zero or not. A bit stream generation part outputs the pattern information, the coding object data and the flex bit in a predetermined order, to output a bit stream.

摘要翻译： 图像压缩装置执行通过静止图像数据的频率转换而产生的直流分量数据，低通分量数据和高通分量数据的量化。 提取部分从量化数据中提取要进行熵编码的附加数据和编码对象数据。 熵编码部对存储在编码对象数据存储器中的编码对象数据进行熵编码。 附加数据处理部分从附加数据生成flex位。 图案信息生成部直接从提取部获取编码对象数据，生成表示编码对象数据是否为零的图案信息。 比特流生成部以预定顺序输出图案信息，编码对象数据和柔性位，以输出比特流。

公开(公告)号：US20090238266A1

公开(公告)日：2009-09-24

申请号：US12394513

申请日：2009-02-27

申请人： Makoto SAITO ,  Hiromu Hasegawa ,  Miyuki Yanagida

发明人： Makoto SAITO ,  Hiromu Hasegawa ,  Miyuki Yanagida

IPC分类号： H04N7/26

CPC分类号： H04N19/40 ,  H04N19/115 ,  H04N19/126 ,  H04N19/139 ,  H04N19/14 ,  H04N19/149 ,  H04N19/172 ,  H04N19/177 ,  H04N19/179 ,  H04N19/192 ,  H04N19/61

摘要： A category setting part sets a type of a decoded image based on characteristics of the decoded image which are fineness of the decoded image and an intensity of movement of the decoded image. A code amount setting part sets a target code amount of an output image based on the type of the decoded image. A quantization step value setting part sets a quantization step value of the output image based on the target code amount of the output image. A transcoder can set the target code amount of the output image depending on fineness of the decoded image. The transcoder can distribute the target code amount of the output image to a reference image and a predicted image depending on the intensity of movement of the decoded image.

摘要翻译： 类别设定部根据作为解码图像的细度的解码图像的特性和解码图像的移动强度来设定解码图像的种类。 代码量设定部根据解码图像的种类来设定输出图像的目标代码量。 量化步长值设定部根据输出图像的目标码量设定输出图像的量化步长值。 代码转换器可以根据解码图像的细度来设置输出图像的目标代码量。 代码转换器可以根据解码图像的移动强度将输出图像的目标代码量分配给参考图像和预测图像。

公开(公告)号：US07539352B2

公开(公告)日：2009-05-26

申请号：US11316743

申请日：2005-12-27

申请人： Hiromu Hasegawa ,  Munehiro Mori ,  Nobuhiro Minami

发明人： Hiromu Hasegawa ,  Munehiro Mori ,  Nobuhiro Minami

IPC分类号： G06K9/40

CPC分类号： G06T5/002 ,  G06T5/20 ,  G06T2207/20012 ,  G06T2207/20016 ,  G06T2207/20032

摘要： A first pixel group containing a pixel of interest, a second pixel group containing the first pixel group, and a third pixel group containing the second pixel group are defined. A first reference pixel value is calculated based on the first pixel group, and a second reference pixel value is calculated based on the third pixel group. The second pixel group is divided into two sub-groups with respect to the second reference pixel value. The sub-group containing the pixel of interest is selected as a target set. In the target set, a pixel with a pixel value close to the first reference pixel value is selected as a corrective pixel. The pixel value of the pixel of interest is replaced with the pixel value of the corrective pixel.

摘要翻译： 定义包含感兴趣像素的第一像素组，包含第一像素组的第二像素组和包含第二像素组的第三像素组。 基于第一像素组计算第一参考像素值，并且基于第三像素组计算第二参考像素值。 第二像素组相对于第二参考像素值被分成两个子组。 选择包含感兴趣像素的子组作为目标集。 在目标组中，选择具有接近第一参考像素值的像素值的像素作为校正像素。 感兴趣像素的像素值被校正像素的像素值代替。