公开(公告)号：US08699807B2

公开(公告)日：2014-04-15

申请号：US13577488

申请日：2011-01-06

申请人： Toshimitsu Tatsuka ,  Hiromu Hasegawa

发明人： Toshimitsu Tatsuka ,  Hiromu Hasegawa

IPC分类号： G06K9/36 ,  G06K9/46

CPC分类号： H04N19/107 ,  H04N19/14 ,  H04N19/176

摘要： An image coding apparatus calculates the activity of each macroblock. All the macroblocks of block lines are set as intra-candidate macroblocks (intra-candidate MBs) which are candidates for intra coding. Every other macroblock is set as an intra-candidate MB in block lines. One of the intra-candidate MBs in each block line, which has the minimum activity, is determined as an intra macroblock of a frame. The macroblock determined as the intra MB is changed from the intra-candidate MB to an intra-forbidden macroblock. After changing the setting of the intra-candidate MBs, intra macroblocks are determined for a frame inputted subsequent to the frame.

摘要翻译： 图像编码装置计算每个宏块的活动。 块线的所有宏块被设置为作为帧内编码候选的候选内宏块（候选内MB）。 每个其他宏块以块线设置为候选内MB。 具有最小活动度的每个块行中的候选MB之一被确定为帧的帧内宏块。 确定为帧内MB的宏块从帧内候选MB改变为禁止内宏块。 在改变帧内候选MB的设置之后，为帧之后输入的帧确定帧内宏块。

公开(公告)号：US08335372B2

公开(公告)日：2012-12-18

申请号：US12578927

申请日：2009-10-14

申请人： Hiromu Hasegawa

发明人： Hiromu Hasegawa

IPC分类号： G06K9/40 ,  G06K9/32 ,  G06K9/64 ,  G06K9/00

CPC分类号： G06T3/4015 ,  G06T3/4007

摘要： A correlation value calculation circuit calculates respective correlation values of each pixel for color image or for gray image in four directions. A selection circuit determines respective correlation values (Cv, Ch, CdA and CdB) in the four directions on the basis of a chroma evaluation value. A first correlation judgment circuit determines a correlation direction of a specified pixel from the correlation values (Cv, Ch, CdA and CdB). A first interpolation circuit performs color interpolation on the basis of the determined correlation direction. A color-interpolated image is enlarged by an enlargement circuit. A correlation direction interpolation circuit performs enlargement and interpolation of the correlation direction determined by the first correlation judgment circuit. A filter performs a filtering process for each of pixels of the enlarged image by using the interpolated correlation direction for enlargement.

摘要翻译： 相关值计算电路在四个方向上计算彩色图像或灰度图像的每个像素的相关值。 选择电路基于色度评估值来确定四个方向上的各个相关值（Cv，Ch，CdA和CdB）。 第一相关判断电路根据相关值（Cv，Ch，CdA和CdB）确定指定像素的相关方向。 第一插值电路基于确定的相关方向执行颜色插值。 彩色插值图像由放大电路放大。 相关方向插补电路对由第一相关判断电路确定的相关方向进行放大和插值。 滤波器通过使用用于放大的内插相关方向对放大图像的每个像素执行滤波处理。

公开(公告)号：US20120308151A1

公开(公告)日：2012-12-06

申请号：US13577488

申请日：2011-01-06

申请人： Toshimitsu Tatsuka ,  Hiromu Hasegawa

发明人： Toshimitsu Tatsuka ,  Hiromu Hasegawa

IPC分类号： G06K9/36

CPC分类号： H04N19/107 ,  H04N19/14 ,  H04N19/176

摘要： An image coding apparatus calculates the activity of each macroblock. All the macroblocks of block lines are set as intra-candidate macroblocks (intra-candidate MBs) which are candidates for intra coding. Every other macroblock is set as an intra-candidate MB in block lines. One of the intra-candidate MBs in each block line, which has the minimum activity, is determined as an intra macroblock of a frame. The macroblock determined as the intra MB is changed from the intra-candidate MB to an intra-forbidden macroblock. After changing the setting of the intra-candidate MBs, intra macroblocks are determined for a frame inputted subsequent to the frame.

摘要翻译： 图像编码装置计算每个宏块的活动。 块线的所有宏块被设置为作为帧内编码候选的候选内宏块（候选内MB）。 每个其他宏块以块线设置为候选内MB。 具有最小活动度的每个块行中的候选MB之一被确定为帧的帧内宏块。 确定为帧内MB的宏块从帧内候选MB改变为禁止内宏块。 在改变帧内候选MB的设置之后，为帧之后输入的帧确定帧内宏块。

公开(公告)号：US20090237569A1

公开(公告)日：2009-09-24

申请号：US12400132

申请日：2009-03-09

申请人： Makoto Saito ,  Hiromu Hasegawa ,  Miyuki Yanagida

发明人： Makoto Saito ,  Hiromu Hasegawa ,  Miyuki Yanagida

IPC分类号： H04N5/14

CPC分类号： H04N5/147 ,  H04N19/115 ,  H04N19/124 ,  H04N19/14 ,  H04N19/142 ,  H04N19/146 ,  H04N19/40 ,  H04N19/61 ,  H04N19/87

摘要： A scene change detection part detects a scene change based on a characteristic amount of an input image. A target code amount setting part executes correction by a correction code amount on a target code amount previously set for suppressing variation of an output code amount around the time of scene change. A quantization step value setting part sets a quantization step value based on the target code amount. That is to say, a transcoder 1 does not detect a scene change by previously reading an input image or by detecting variation of the output code amount.

摘要翻译： 场景变化检测部根据输入图像的特征量来检测场景变化。 目标代码量设定部通过校正代码量来执行对预先设定的用于抑制场景变化时的输出代码量的变动的目标代码量的校正。 量化步长值设定部根据目标代码量来设定量化步长值。 也就是说，代码转换器1不通过预先读取输入图像或通过检测输出代码量的变化来检测场景变化。

公开(公告)号：US07551214B2

公开(公告)日：2009-06-23

申请号：US11275009

申请日：2005-12-01

申请人： Hiromu Hasegawa

发明人： Hiromu Hasegawa

IPC分类号： H04N3/14 ,  H04N5/335 ,  H04N9/04 ,  H04N9/083 ,  G06K9/00

CPC分类号： H04N9/07 ,  G06T3/4015 ,  H04N9/045

摘要： Correlation values in the vertical direction, horizontal direction and two diagonal directions are obtained in a pixel signal of RGB Bayer pattern. The correlation values are calculated using G signals. Between a first pair of the vertical and horizontal directions and a second pair of the two diagonal directions, one pair having a greater correlation difference is selected. Then, a direction having a stronger correlation is selected in the selected pair having a greater correlation difference, and pixel interpolation is performed in the selected direction. Alternatively, pixel interpolation is performed following assignment of weights in two directions of the selected pair having a greater correlation difference in accordance with the proportion of their correlations.

摘要翻译： 在RGB拜耳图案的像素信号中获得垂直方向，水平方向和两个对角线方向上的相关值。 使用G信号计算相关值。 在第一对垂直和水平方向之间以及两个对角方向的第二对之间，选择一对具有较大的相关差。 然后，在具有较大相关差的所选择的对中选择具有较强相关性的方向，并且在所选择的方向上执行像素内插。 或者，在根据其相关比例具有较大的相关差异的所选对中的两个方向上的权重分配之后执行像素内插。

公开(公告)号：US20070280539A1

公开(公告)日：2007-12-06

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： G06K9/46

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。 从摄像装置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基于相关结果进行像素内插处理。 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：US20070126885A1

公开(公告)日：2007-06-07

申请号：US11275009

申请日：2005-12-01

申请人： Hiromu Hasegawa

发明人： Hiromu Hasegawa

IPC分类号： H04N5/228

CPC分类号： H04N9/07 ,  G06T3/4015 ,  H04N9/045

摘要： Correlation values in the vertical direction, horizontal direction and two diagonal directions are obtained in a pixel signal of RGB Bayer pattern. The correlation values are calculated using G signals. Between a first pair of the vertical and horizontal directions and a second pair of the two diagonal directions, one pair having a greater correlation difference is selected. Then, a direction having a stronger correlation is selected in the selected pair having a greater correlation difference, and pixel interpolation is performed in the selected direction. Alternatively, pixel interpolation is performed following assignment of weights in two directions of the selected pair having a greater correlation difference in accordance with the proportion of their correlations.

摘要翻译： 在RGB拜耳图案的像素信号中获得垂直方向，水平方向和两个对角线方向上的相关值。 使用G信号计算相关值。 在第一对垂直和水平方向之间以及两个对角方向的第二对之间，选择一对具有较大的相关差。 然后，在具有较大相关差的所选择的对中选择具有较强相关性的方向，并且在所选择的方向上执行像素内插。 或者，在根据其相关比例具有较大的相关差异的所选对中的两个方向上的权重分配之后执行像素内插。

公开(公告)号：US06704448B1

公开(公告)日：2004-03-09

申请号：US09572870

申请日：2000-05-18

申请人： Hiromu Hasegawa

发明人： Hiromu Hasegawa

IPC分类号： G06K934

CPC分类号： G06K9/00234

摘要： A region extraction device includes a segmentation unit for dividing an input image into a plurality of regions, a pixel number counting unit for determining the ratio of pixels of a predetermined value to all pixels of each of the plurality of regions, and a region extracting unit for extracting a region in which the ratio determined by the pixel number counting unit exceeds a first value. Among the plurality of regions into which the input image is divided, a region is extracted in which the ratio determined by the pixel number counting unit exceeds the first value, so that a specific region can be extracted accurately even if the values of pixels in the specific region to be extracted are scattered in a wide range.

摘要翻译： 区域提取装置包括用于将输入图像分割成多个区域的分割单元，用于确定预定值的像素与多个区域中的每一个的全部像素的比率的像素数计数单元，以及区域提取单元 用于提取其中由像素数计数单元确定的比率超过第一值的区域。 在分割输入图像的多个区域中，提取区域，其中由像素数计数单元确定的比率超过第一值，使得即使在像素数计数单元中的像素值可以精确地提取特定区域 要提取的特定区域在宽范围内散布。

公开(公告)号：US08780977B2

公开(公告)日：2014-07-15

申请号：US12367765

申请日：2009-02-09

申请人： Hiromu Hasegawa ,  Makoto Saito

发明人： Hiromu Hasegawa ,  Makoto Saito

IPC分类号： H04N7/12

CPC分类号： H04N19/115 ,  H04N19/126 ,  H04N19/15 ,  H04N19/162 ,  H04N19/40 ,  H04N19/61

摘要： In a transcoder, a decoder decodes a stream and an encoder encodes the stream again. The encoder calculates the quantization step value by using an average period bit rate (ASn(M)) of a first stream or an average period bit rate (ACn(M)) of a second stream. Buffers store bit rates (Sn, Cn) of the first and second streams for M periods, respectively. The encoder uses the average period bit rate (ASn(M)) of the first stream or then average period bit rate (ACn(M)) of the second stream in any one of the periods M1, M2 and M3 among M periods.

摘要翻译： 在代码转换器中，解码器解码流并且编码器再次对流进行编码。 编码器通过使用第二流的第一流的平均周期比特率（ASn（M））或平均周期比特率（ACn（M））来计算量化步长值。 缓冲器分别存储M个周期的第一和第二个流的比特率（Sn，Cn）。 编码器在M个周期中使用第一个流的平均周期比特率（ASn（M）），或者在M个周期中的任何一个周期M1，M2和M3中的第二个流的平均周期比特率（ACn（M））。

公开(公告)号：US20140161349A1

公开(公告)日：2014-06-12

申请号：US14232803

申请日：2012-07-06

申请人： Hiromu Hasegawa

发明人： Hiromu Hasegawa

IPC分类号： G06K9/46 ,  G06T11/00

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。 直线检测单元基于归一化计数检测直线。