公开(公告)号：US20080031337A1

公开(公告)日：2008-02-07

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

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rαa（1）来获得加权值。 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：US20060262196A1

公开(公告)日：2006-11-23

申请号：US11277699

申请日：2006-03-28

申请人： Hiromu HASEGAWA ,  Munehiro Mori ,  Nobuhiro Minami

发明人： Hiromu HASEGAWA ,  Munehiro Mori ,  Nobuhiro Minami

IPC分类号： H04N9/73

CPC分类号： H04N9/045 ,  H04N9/646 ,  H04N2209/046

摘要： A pixel signal of Bayer pattern output from an imaging device is subjected to interpolation in a pixel interpolation circuit, and converted into a YCbCr signal in a color space conversion circuit. A chroma value calculation circuit calculates a chroma value based on the pixel signal output from the imaging device. A look-up table converts the chroma value into a suppression signal. More specifically, when the chroma value is lower than a threshold value, the look-up table outputs a value lower than 1 as the suppression signal. The suppression signal is corrected in another look-up table, and then, works on Cr and Cb signals in multipliers. A signal in a low-chroma region is thereby suppressed.

摘要翻译： 从成像装置输出的拜耳图案的像素信号在像素插值电路中进行插值，并在色空间转换电路中转换为YCbCr信号。 色度值计算电路根据从成像装置输出的像素信号来计算色度值。 查找表将色度值转换为抑制信号。 更具体地，当色度值低于阈值时，查找表输出低于1的值作为抑制信号。 抑制信号在另一个查找表中被校正，然后在乘法器中对Cr和Cb信号进行工作。 由此抑制低色度区域中的信号。

公开(公告)号：US20060159361A1

公开(公告)日：2006-07-20

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.

公开(公告)号：US06820137B2

公开(公告)日：2004-11-16

申请号：US09989653

申请日：2001-11-21

申请人： Kyoko Nakamura ,  Hiromu Hasegawa

发明人： Kyoko Nakamura ,  Hiromu Hasegawa

IPC分类号： G06F300

CPC分类号： G06T3/40

摘要： A resolution converting method, device, and computer-readable recording medium that can improve the quality of a resolution-converted image. The invention converts resolution based on a model generated through statistical processing of multiple images by preparing multiple models having different resolutions, receiving an input image, projecting the input image onto a model to obtain characteristic parameters of the input image, and generating an image by applying the obtained characteristic parameters to a model. Using the characteristic parameters thereby obtained, an image is generated using a model different from the model used to obtain the characteristic parameters. Consequently, the invention is capable of improving the quality of the resolution-converted image.

摘要翻译： 一种分辨率转换方法，设备和计算机可读记录介质，其可以提高分辨率转换图像的质量。 本发明通过准备具有不同分辨率的多个模型，接收输入图像，将输入图像投影到模型上以获得输入图像的特征参数，并通过应用产生图像来转换基于通过多个图像的统计处理生成的模型的分辨率 获得的特征参数为模型。 使用由此获得的特征参数，使用与用于获得特征参数的模型不同的模型来生成图像。 因此，本发明能够提高分辨率转换图像的质量。

公开(公告)号：US09661333B2

公开(公告)日：2017-05-23

申请号：US13522122

申请日：2010-11-29

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： H04N11/04 ,  H04N7/12 ,  H04N19/174 ,  H04N19/147 ,  H04N19/196 ,  H04N19/149 ,  H04N19/61 ,  H04N19/124

CPC分类号： H04N19/174 ,  H04N19/124 ,  H04N19/147 ,  H04N19/149 ,  H04N19/196 ,  H04N19/61

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 for quantization. The controller determines a quantization parameter of a currently target macroblock as an increase or decrease from a reference value, and determines the increase or decrease based on a difference between a target amount of code for a predetermined number of macroblocks fewer than a total number of macroblocks within one frame and a generated amount of code of the predetermined number of macroblocks processed immediately before. The controller can further determine the increase or decrease, based on pixel information of the currently target macroblock such as an activity evaluation value.

公开(公告)号：US09443318B2

公开(公告)日：2016-09-13

申请号：US14240912

申请日：2012-07-20

申请人： Hiromu Hasegawa

发明人： Hiromu Hasegawa

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

CPC分类号： G06K9/4633 ,  G06K9/4652 ,  G06T7/13 ,  G06T7/168 ,  G06T2207/10024 ,  G06T2207/20061

摘要： An apparatus and method to detect a line segment or arc using Hough transform. A Hough transform unit performs contour extraction on brightness image data to generate contour image data, with pixels having a pixel value of 0 to 255, performs the Hough transform on points in the contour image data, and counts additional values represented by pixel values of points in the contour image data in a Hough table. The Hough transform unit performs contour extraction on first to third component data to generate first to third contour data with pixels having a pixel value of 0 to 255, performs the Hough transform on points in the first to third contour data, and counts additional values represented by pixel values of points in the first to third contour data in the Hough table. The detection unit comprehensively evaluates the counts to detect a line segment or arc.

摘要翻译： 使用霍夫变换检测线段或弧的装置和方法。 霍夫变换单元对亮度图像数据执行轮廓提取，以生成具有像素值为0至255的像素的轮廓图像数据，对轮廓图像数据中的点执行霍夫变换，并对由点的像素值表示的附加值进行计数 在Hough表中的轮廓图像数据中。 霍夫变换单元在第一至第三分量数据上执行轮廓提取，以生成具有像素值为0至255的像素的第一至第三轮廓数据，对第一至第三轮廓数据中的点执行霍夫变换，并计数表示的附加值 在霍夫表中第一到第三轮廓数据中的点的逐像素值。 检测单元综合评估检测线段或弧线的计数。

公开(公告)号：US20140219504A1

公开(公告)日：2014-08-07

申请号：US14343182

申请日：2012-07-20

申请人： Yuki Haraguchi ,  Hiromu Hasegawa

发明人： Yuki Haraguchi ,  Hiromu Hasegawa

IPC分类号： G06K9/00 ,  G06T7/00

CPC分类号： G06K9/00369 ,  G06K9/00805 ,  G06T11/60 ,  G06T2210/22

摘要： It's an object of the invention to provide an object detection device capable of detecting an object for detection in an input image with high precision. In an object detection device 1, a detection window setting unit 11 receives a photographic image 21 photographed by a camera. The detection window setting unit 11 sets a detection window area in the photographic image 21 and generates a normal window image 22 by cutting out the detection window area from the photographic image 21. An image processing unit 12 performs image processing such as enlargement and reduction, etc. on the photographic image 21. Each modified window images 23 is cut out from each of the enlarged photographic image 21 and the reduced photographic image 21. A degree calculation unit 13 calculates matching rates indicating a possibility the object for detection in the window image for each window images on the basis of feature data 51 indicating a feature of the object for detection. A determination unit 14 determines whether or not the detection object is present in the detection window area on the basis of the matching rates of each window image.

摘要翻译： 本发明的目的是提供一种能够高精度地检测输入图像中的检测对象的物体检测装置。 在物体检测装置1中，检测窗口设定部11接收由照相机拍摄的摄影图像21。 检测窗口设定单元11在摄影图像21中设置检测窗口区域，并通过从摄影图像21切出检测窗口区域来生成正常窗口图像22.图像处理单元12进行诸如放大和缩小的图像处理， 每个经修改的窗口图像23从放大的照片图像21和缩小的摄影图像21中的每一个切出。度数计算单元13计算指示在窗口图像中检测对象的可能性的匹配率 基于指示用于检测的对象的特征的特征数据51对于每个窗口图像。 确定单元14基于每个窗口图像的匹配率来确定检测对象是否存在于检测窗口区域中。

公开(公告)号：US20120321207A1

公开(公告)日：2012-12-20

申请号：US13582056

申请日：2011-02-24

申请人： Hiromu Hasegawa ,  Toshimitsu Tatsuka

发明人： Hiromu Hasegawa ,  Toshimitsu Tatsuka

IPC分类号： G06K9/36

CPC分类号： H04N19/0003 ,  H04N19/107 ,  H04N19/176 ,  H04N19/184 ,  H04N19/196

摘要： It is an object of the present invention to provide an image coding technique for suppressing degradation in image quality, in which the time and space where intra macroblocks appear are dispersed. A numerical value (Ftk) is generated from the lower-order six bits of the frame number (Ft) of a coding object frame. A numerical value (Fs) is generated by shifting the numerical value (Ftk) leftward by two bits. An exclusive OR of the numerical value (Ftk) and the numerical value (Fs) is calculated, to thereby generate a numerical value (A). A numerical value (Ytk) is generated from the lower-order six bits of the Y coordinate (Yt) of a coding object macroblock. The upper-order bits of the numerical value (Ytk) and the lower-order bits thereof are inverted, to thereby generate a numerical value (Yr). Further, an exclusive OR of the numerical value (Yr) and the numerical value (A) is calculated, to thereby generate a numerical value (B). A numerical value (Xtk) is generated from the lower-order six bits of the X coordinate (Xt) of the coding object macroblock. When the numerical value (Xtk) and the numerical value (B) are identical to each other, the coding object macroblock is intra-coded.

摘要翻译： 本发明的一个目的是提供一种图像编码技术，用于抑制图像质量的劣化，其中内部宏块出现的时间和空间被分散。 从编码对象帧的帧号（Ft）的低位6位生成数值（Ftk）。 通过将数值（Ftk）向左移位两位来产生数值（Fs）。 计算数值（Ftk）和数值（Fs）的异或，从而生成数值（A）。 从编码对象宏块的Y坐标（Yt）的低位6位生成数值（Ytk）。 数值（Ytk）及其低位的高位被反转，从而生成数值（Yr）。 此外，计算数值（Yr）和数值（A）的异或，从而生成数值（B）。 从编码对象宏块的X坐标（Xt）的低6位生成数值（Xtk）。 当数值（Xtk）和数值（B）彼此相同时，编码对象宏块被帧内编码。

公开(公告)号：US20110134997A1

公开(公告)日：2011-06-09

申请号：US13057111

申请日：2009-03-06

申请人： Nobumasa Narimatsu ,  Hiromu Hasegawa

发明人： Nobumasa Narimatsu ,  Hiromu Hasegawa

IPC分类号： H04N7/12

CPC分类号： H04N19/124 ,  H04N19/149 ,  H04N19/162 ,  H04N19/172 ,  H04N19/177 ,  H04N19/40 ,  H04N19/61

摘要： A technique for suppressing a significant variation of a quantization step value and enabling a stable rate control to be performed. A function is used for calculating a quantization step conversion factor from a bit rate ratio is a straight line with an inclination of −1, intersecting a function at a reference point. The function is a monotone decreasing exponential function. A reference bit rate ratio (R0) is expressed as R0=T/S by using a total bit rate (S) of a first stream and a total target bit rate (T) of a second stream. The function appropriately represents a relation between the bit rate ratio and the quantization step conversion factor in coding conversion but has a large rate of variation in an area where the bit rate ratio is about 0.5. The function has a small rate of variation and can suppress a significant variation of the quantization step conversion value.

摘要翻译： 一种用于抑制量化步长值的显着变化并实现稳定速率控制的技术。 使用函数来计算比特率的量化步长转换因子是与参考点的函数相交的具有-1的倾斜度的直线。 该函数是单调递减指数函数。 通过使用第一流的总比特率（S）和第二流的总目标比特率（T）将参考比特率比（R0）表示为R0 = T / S。 该功能适当地表示编码转换中的比特率比与量化级转换因子之间的关系，但是在比特率为约0.5的区域中具有较大的变化率。 该功能具有较小的变化率，并且可以抑制量化步长转换值的显着变化。

公开(公告)号：US20100104183A1

公开(公告)日：2010-04-29

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

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。