公开(公告)号：US07720151B2

公开(公告)日：2010-05-18

申请号：US10364094

申请日：2003-02-11

申请人： Yuji Itoh ,  Ho-Cheon Wey ,  Ngai-Man Cheung

发明人： Yuji Itoh ,  Ho-Cheon Wey ,  Ngai-Man Cheung

IPC分类号： H04N7/12

CPC分类号： H04N19/557 ,  H04N5/145

摘要： This invention is a method for speeding up block matching based motion estimation for video encoder. The invention 1) calculates statistics for a candidate motion vector for a predetermined fraction of the pixels of a macroblock, 2) makes an early decision based on this preliminary cost function, and 3) terminates the block matching process without calculating the cost function for other pixels if the preliminary cost function is not less than a predetermined threshold. This early decision for goodness estimation provides an economy of processing load when a large portion of data is left untouched (i.e. unprocessed). The present invention employs feedback control to reduce the predetermined threshold for quick convergence upon each detection of a better match.

摘要翻译： 本发明是用于加速视频编码器的基于块匹配的运动估计的方法。 本发明1）计算宏块像素的预定分数的候选运动矢量的统计量，2）基于该初步成本函数进行早期决定，3）终止块匹配处理而不计算其他的成本函数 如果初步成本函数不小于预定阈值，则为像素。 这种对善良估计的早期决定提供了当大部分数据保持不变（即未处理）时处理负载的经济性。 本发明采用反馈控制来减少每次检测更好匹配时快速收敛的预定阈值。

公开(公告)号：US07155472B2

公开(公告)日：2006-12-26

申请号：US10364636

申请日：2003-02-11

申请人： Ngai-Man Cheung ,  Ho-Cheon Wey ,  Yuji Itoh

发明人： Ngai-Man Cheung ,  Ho-Cheon Wey ,  Yuji Itoh

IPC分类号： G06F7/38

CPC分类号： G06F7/535 ,  G06F7/49947 ,  G06F2207/5356 ,  G06T9/005

摘要： A quantizer employs a scaled integral inverse ratio division for quantization of an input T by a quantization step Q. The quantizer forms an integral approximation q of 2r/Q by either trunc(2r/Q) or round(2r/Q). A multiplier multiplies the absolute value of T by the q. An adjustment factor is added alternatively to the absolute value of T prior to multiplication or to the product after multiplication. This adjustment factor minimizes errors near transition points in the quantization. This invention is applicable to both trunc(T/Q) and round(T/Q).

摘要翻译： 量化器采用缩放的积分逆比除法，用于通过量化步长Q对输入T进行量化。量化器通过trunc（2＆lt; r＆lt; / SUP> / Q）或圆（2 / Q）。 乘数将T的绝对值乘以q。 调整因子与乘法前的T的绝对值或乘法后的乘积相加。 该调整因子使量化中的转变点附近的误差最小化。 本发明适用于trunc（T / Q）和round（T / Q）。

公开(公告)号：US07154557B2

公开(公告)日：2006-12-26

申请号：US10364095

申请日：2003-02-11

申请人： Yuji Itoh ,  Ngai-Man Cheung

发明人： Yuji Itoh ,  Ngai-Man Cheung

IPC分类号： H04N11/02

CPC分类号： H04N9/77 ,  H04N9/646

摘要： This invention corrects chrominance misalignment that occurs during chrominance down-sampling and up-sampling. The invention extracts a binary index from the corresponding luminance signal. The binary index enables generation of a filter window. On down-sampling the filter window is applied to a block of source chrominance pixels which are filtered or not based upon the binary index. On up-sampling the binary index of the filter window for the target chrominance pixels determines which are filtered or not.

摘要翻译： 本发明校正在色度下采样和上采样期间发生的色度失准。 本发明从对应的亮度信号中提取二进制索引。 二进制索引可以生成一个过滤器窗口。 滤波器窗口的下采样被应用于基于二进制索引而被滤波的源色度像素块。 对于对目标色度像素的滤波器窗口的二进制索引进行上采样确定哪些被过滤或不被滤波。

公开(公告)号：US07113543B2

公开(公告)日：2006-09-26

申请号：US10356910

申请日：2003-02-03

申请人： Ngai-Man Cheung ,  Yuji Itoh

发明人： Ngai-Man Cheung ,  Yuji Itoh

IPC分类号： H04B1/66

CPC分类号： H04N19/557 ,  H04N19/112 ,  H04N19/56

摘要： Motion compensation as for video compression with motion estimation with either frame mode or field mode by initial prediction of motion mode and when prediction error is small enough truncate motion estimation search.

摘要翻译： 通过运动模式的初始预测以及预测误差足够小的运动估计搜索，可以通过帧模式或场模式进行运动估计的运动补偿。

公开(公告)号：US07158684B2

公开(公告)日：2007-01-02

申请号：US10364104

申请日：2003-02-11

申请人： Ngai-Man Cheung ,  Yuji Itoh

发明人： Ngai-Man Cheung ,  Yuji Itoh

IPC分类号： G06K9/36

CPC分类号： H04N19/136 ,  H04N19/13 ,  H04N19/139 ,  H04N19/172 ,  H04N19/61

摘要： A method of variable length coding classifies each received symbol into one of a plurality of classifications having a corresponding variable length code table selected based upon a probability distribution of received symbols within the classification. The variable length codeword output corresponds to the received symbol according to the variable length code table corresponding to the classification of that received symbol. The plurality of classifications and the corresponding variable length code tables may be predetermined and fixed. Alternatively, the variable length code table may be dynamically determined with data transmitted from encoder to decoder specifying the variable length code tables and their configurations. Universal variable length code (UVLC) is used to code the symbols. Universal variable length code can instantiate to different variable length code tables with different parameters.

摘要翻译： 可变长度编码的方法将每个接收到的符号分类为具有基于分类内的接收符号的概率分布而选择的对应的可变长度码表的多个分类中的一个。 根据与该接收符号的分类对应的可变长度码表，可变长度码字输出对应于接收符号。 多个分类和对应的可变长度码表可以是预定和固定的。 或者，可变长度代码表可以用指定可变长度代码表及其配置的从编码器发送到解码器的数据来动态地确定。 通用可变长度代码（UVLC）用于对符号进行编码。 通用可变长度代码可以实例化为具有不同参数的不同可变长度代码表。

公开(公告)号：US06552674B2

公开(公告)日：2003-04-22

申请号：US10077126

申请日：2002-02-15

申请人： Ngai-Man Cheung ,  Yuji Itoh

发明人： Ngai-Man Cheung ,  Yuji Itoh

IPC分类号： H03M740

CPC分类号： H03M7/40

摘要： This invention is a method to automatically configure the universal variable length coding (UVLC). The method is applicable to code the syntax elements with a lot of symbols like the transform coefficients and motion vectors. The configuration problem includes a configuration method based on a genetic algorithm (GA). The method can be applied to on-the-fly configuration of codewords during video encoding, or to off-line training of code tables. This invention also includes several techniques to reduce the required operations for applications which have only limited processing power.

公开(公告)号：US20070128872A1

公开(公告)日：2007-06-07

申请号：US10579335

申请日：2004-11-15

申请人： Yuji Itoh ,  Ayako Nishioka ,  Nobuo Uotani

发明人： Yuji Itoh ,  Ayako Nishioka ,  Nobuo Uotani

IPC分类号： H01L21/44 ,  H01L21/302

CPC分类号： C09G1/02 ,  C09K3/1463 ,  H01L21/32115 ,  H01L21/3212 ,  H01L21/7684

摘要： As a polishing composition which allows high-speed polishing while dishing and erosion are prevented and the flatness of metal film is maintained, there is provided a polishing composition for polishing a metal film provided on a substrate having trenches such that the metal film fills the trenches, so as to provide a planarized surface, wherein the composition comprises water, a phosphate ester having a C≧6 carbon atom alkyl group in its molecule, and an etchant for the metal, and has a pH of 5 to 11.

摘要翻译： 作为能够防止凹陷和侵蚀而进行高速抛光并且保持金属膜的平坦度的抛光组合物，提供了一种用于抛光设置在具有沟槽的基底上的金属膜的抛光组合物，使得金属膜填充沟槽 ，以提供平坦化的表面，其中组合物包含水，分子中具有C> = 6个碳原子烷基的磷酸酯和金属的蚀刻剂，并且具有5至11的pH。

公开(公告)号：US4918466A

公开(公告)日：1990-04-17

申请号：US310500

申请日：1989-02-13

申请人： Kazuhisa Takahashi ,  Keiichi Kawasaki ,  Yuji Itoh

发明人： Kazuhisa Takahashi ,  Keiichi Kawasaki ,  Yuji Itoh

IPC分类号： G01R33/28 ,  G03G15/22 ,  H04N1/06 ,  H04N1/113 ,  H04N1/387

CPC分类号： H04N1/3872 ,  G01R33/28 ,  G03G15/04072 ,  G03G15/221 ,  H04N1/06 ,  H04N1/1135

摘要： An image recording method having a first step of recording an image on a first area of a recording medium by the major scanning by a light beam scanning optical system and a first subsidiary scanning in which the recording medium is moved relative to the light beam scanning optical system in a direction intersecting the major scanning, and a second step of recording an image on a second area of the recording medium by the major scanning and a second subsidiary scanning in which the recording medium is moved relative to the light beam scanning optical system so that the first area again crosses the scanning area of the light beam scanning optical system.

摘要翻译： 一种图像记录方法，具有通过光束扫描光学系统的主扫描在记录介质的第一区域上记录图像的第一步骤和其中记录介质相对于光束扫描光学器件移动的第一辅助扫描 系统在与主扫描相交的方向上，以及第二步骤，通过主扫描和第二副扫描在记录介质的第二区域上记录图像，其中记录介质相对于光束扫描光学系统移动，从而 第一区域再次穿过光束扫描光学系统的扫描区域。

公开(公告)号：US4839528A

公开(公告)日：1989-06-13

申请号：US49522

申请日：1987-05-14

申请人： Yuji Itoh

发明人： Yuji Itoh

IPC分类号： G01N15/14

CPC分类号： G01N15/1434 ,  G01N15/1459 ,  G01N2015/144 ,  G01N2015/1479 ,  G01N2021/4707

摘要： A light is applied to particles to be examined in a cell, the scattered light from the particles to be examined is converted to an afocal light, a beam splitter is provided in the afocal light beam, and photometering and observation of the cell are efficiently effected in two optical paths branched off by the beam splitter.

摘要翻译： 将光施加到细胞中待检测的颗粒上，将待检查颗粒的散射光转换为无焦点光，在远焦光束中设置分束器，并且有效地对细胞进行光度测量和观察 在分束器分支的两个光路中。

公开(公告)号：US4679919A

公开(公告)日：1987-07-14

申请号：US884305

申请日：1986-07-15

申请人： Yuji Itoh ,  Junichi Takahashi

发明人： Yuji Itoh ,  Junichi Takahashi

IPC分类号： A61B3/12 ,  A61B3/14 ,  G03B29/00

CPC分类号： A61B3/14

摘要： In an opthalmic photographing apparatus, capable of photographing the fundus of an eye to be examined at a variable magnification, being provided with a ring slit in an illuminating optical path at a position substantially conjugate with the front-eye-part and being further provided with a baffle at a position substantially conjugate with the crystalline lens, the slit width of a ring slit image projected onto the eye to be examined and further the size of a baffle image are variable with a magnification change.

摘要翻译： 在能够以可变放大倍率拍摄要检查的眼睛的眼底的眼科摄影装置中，在与前眼部基本共轭的位置处在照明光路中设置有环形狭缝，并且还设置有 在与晶状体基本共轭的位置处的挡板，投影到待检查的眼睛上的环形狭缝图像的狭缝宽度以及挡板图像的尺寸随着放大率的变化而变化。