公开(公告)号：US20100061644A1

公开(公告)日：2010-03-11

申请号：US12620431

申请日：2009-11-17

申请人： Kazushi Sato ,  Osamu Sunohara ,  Teruhiko Suzuki ,  Peter Kuhn ,  Yoichi Yagasaki ,  Kuniaki Takahashi

发明人： Kazushi Sato ,  Osamu Sunohara ,  Teruhiko Suzuki ,  Peter Kuhn ,  Yoichi Yagasaki ,  Kuniaki Takahashi

IPC分类号： G06K9/36

CPC分类号： H04N19/124 ,  H04N7/26244 ,  H04N7/26335 ,  H04N7/26941 ,  H04N7/50 ,  H04N19/126 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/40 ,  H04N19/44 ,  H04N19/60 ,  H04N19/61 ,  H04N19/625

摘要： An image information decoding method for decoding compressed image information in an image decoding apparatus, which has been coded via a process including dividing an input image signal into blocks, performing an orthogonal transform on the blocks on a block-by-block basis, and quantizing resultant orthogonal transform coefficients. The decoding process includes performing, in a dequantization unit in the image decoding apparatus, dequantization such that a quantization parameter is weighted by an addition operation that adds the weight by addition, and the dequantization is performed on each chroma and luma component of the quantized coefficients using quantization step sizes, said luma component being weighted by the quantization parameter; and performing, in a transform unit in the image decoding apparatus, an inverse orthogonal transform.

摘要翻译： 一种用于对图像解码装置中的压缩图像信息进行解码的图像信息解码方法，所述图像解码装置已经通过包括将输入图像信号分割为块的处理进行编码，并且逐块地对块执行正交变换， 得到正交变换系数。 解码处理包括在图像解码装置的去量化单元中进行去量化，使得通过加法加权的加法运算对量化参数进行加权，并且对量化系数的每个色度和亮度分量执行去量化 使用量化步长，所述亮度分量由所述量化参数加权; 并且在图像解码装置的变换单元中执行逆正交变换。

公开(公告)号：US07676101B2

公开(公告)日：2010-03-09

申请号：US10725061

申请日：2003-12-02

申请人： Kazushi Sato ,  Yoichi Yagasaki

发明人： Kazushi Sato ,  Yoichi Yagasaki

IPC分类号： G06K9/36 ,  G06K9/46 ,  H04N7/12

CPC分类号： H04N19/57 ,  G06T7/238 ,  G06T2207/10016 ,  H04N5/145 ,  H04N19/523

摘要： A process burden for code processing is reduced by the present system and method while possibly avoiding the lowering of image quality. When compensating for motion prediction by using a multi-reference frame while sequentially changing the pixel-based sizes of motion compensating blocks, a size-reduced block is generated depending upon a motion compensating block having the greatest pixel-based size to be taken as the uppermost layer among the pixel-based sizes. Thereafter, motion vector search ranges are determined respectively within the reference frame images, on the basis of a plurality of size-reduced reference images reduced in size respectively corresponding to the size-reduction ratios of the size-reduced blocks and the size-reduced blocks. Using the determined search range, an optimal motion vector is detected while sequentially changing the pixel-based sizes of the motion compensating blocks. This can detect a motion vector by only a limited search range within the reference frame image.

摘要翻译： 通过本系统和方法减少代码处理的处理负担，同时可以避免图像质量的降低。 当在顺序地改变运动补偿块的基于像素的尺寸的同时通过使用多参考帧来补偿运动预测时，根据具有最大像素尺寸的运动补偿块来生成尺寸减小的块，作为 基于像素的尺寸中的最上层。 此后，基于减小尺寸的多个尺寸减小的参考图像分别在参考帧图像内确定运动矢量搜索范围，分别对应于尺寸减小的块和尺寸减小的块的尺寸减小比 。 使用确定的搜索范围，在顺序地改变运动补偿块的基于像素的大小的同时检测最佳运动矢量。 这可以仅通过参考帧图像内的有限搜索范围来检测运动矢量。

公开(公告)号：US20070140576A1

公开(公告)日：2007-06-21

申请号：US10591234

申请日：2005-02-25

申请人： Kazushi Sato ,  Yoichi Yagasaki

发明人： Kazushi Sato ,  Yoichi Yagasaki

IPC分类号： G06K9/00 ,  G06K9/36

CPC分类号： H04N19/40 ,  H04N19/112 ,  H04N19/124 ,  H04N19/14 ,  H04N19/152 ,  H04N19/157 ,  H04N19/16 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61

摘要： From an MPEG image data (S11), an MPEG2 encoder circuit (51) extracts a quantum scale (Qm) of each macro block (MB) which has been used for quantization of the MPEG2 in the encoding process. An activity calculation circuit (53) calculates an activity (Nact), based on the quantum scale (Qm), A rate control circuit (54) calculates a quantization parameter (QP) for each macro block (MB), based on the activity (Nact).

摘要翻译： 从MPEG图像数据（S11）中，MPEG2编码器电路（51）提取在编码处理中已经用于MPEG2的量化的每个宏块（MB）的量子尺度（Qm）。 活动计算电路（53）基于量子尺度（Qm）计算活动度（Nact），速率控制电路（54）基于活动性（MB）计算每个宏块（MB）的量化参数（QP） Nact）。

公开(公告)号：US20060109907A1

公开(公告)日：2006-05-25

申请号：US11324674

申请日：2006-01-03

申请人： Kazushi Sato ,  Kuniaki Takahashi ,  Zhu Yiwen ,  Teruhiko Suzuki ,  Yoichi Yagasaki

发明人： Kazushi Sato ,  Kuniaki Takahashi ,  Zhu Yiwen ,  Teruhiko Suzuki ,  Yoichi Yagasaki

IPC分类号： H04N11/02

CPC分类号： H04N5/4401 ,  H04N7/012 ,  H04N19/132 ,  H04N19/20 ,  H04N19/40 ,  H04N19/577 ,  H04N19/587 ,  H04N21/440218 ,  H04N21/440281

摘要： An image data converting apparatus comprising an MPEG2-image data decoding section 19, a scan-converting section 20, an MPEG4-image encoding section 21, and a picture-type determining section 18. The MPEG2-image data decoding section 19 decodes input MPEG2-image compressed data in both the vertical direction and the horizontal direction by using only lower, fourth-order coefficients. The scan-converting section 20 converts interlaced-scan pixel data to sequential-scan pixel data. The MPEG4-image encoding section 21 generates MPEG4-image compressed data from the sequential-scan pixel signals. The sections 19, 20 and 21 are connected in series. The picture-type determining section 18 is connected to the input of the MPEG2-image data decoding section 19. The section 18 determines the picture type of each frame data contained in the interlaced-scan MPEG4-picture compressed data, outputs only the frame data about I/P pictures, discards the frame data about B pictures, thereby converting the frame rate.

摘要翻译： 包括MPEG2图像数据解码部分19，扫描转换部分20，MPEG4图像编码部分21和图像类型确定部分18的图像数据转换装置。 MPEG2图像数据解码部19仅使用较低的四阶系数对垂直方向和水平方向的输入的MPEG2图像压缩数据进行解码。 扫描转换部分20将隔行扫描像素数据转换为顺序扫描像素数据。 MPEG4图像编码部21从顺序扫描像素信号生成MPEG4图像压缩数据。 部分19,20和21串联连接。 图像类型确定部分18连接到MPEG2图像数据解码部分19的输入。 部分18确定隔行扫描MPEG4图像压缩数据中包含的每个帧数据的图像类型，仅输出关于I / P图像的帧数据，丢弃关于B图像的帧数据，从而转换帧速率。

公开(公告)号：US20060013299A1

公开(公告)日：2006-01-19

申请号：US11155687

申请日：2005-06-20

申请人： Kazushi Sato ,  Yiwen Zhu ,  Yoichi Yagasaki

发明人： Kazushi Sato ,  Yiwen Zhu ,  Yoichi Yagasaki

IPC分类号： H04B1/66 ,  H04N11/02 ,  H04N11/04 ,  H04N7/12

CPC分类号： H04N19/124 ,  H04N19/107 ,  H04N19/109 ,  H04N19/11 ,  H04N19/149 ,  H04N19/159 ,  H04N19/61

摘要： Disclosed is an coding apparatus, an coding method, an coding method program, and a recording medium recording the coding method program. The present invention is applicable to transmission of motion pictures using satellite broadcasts, cable television, Internet, cellular phones, and the like, and recording of motion pictures on recording media such as optical disks, magnetic optical disks, flash memory, and the like, for example. In this manner, the coding apparatus can be also constructed to function as a decoding apparatus and an image conversion apparatus. An embodiment of the present invention can simplify the overall construction of such coding apparatus. An embodiment of the present invention detects an optimum prediction mode for intra prediction and inter prediction prior to a coding process. The embodiment detects variables IntraSAD, InterSAD, and (X) indicating differential data sizes according to the detected optimum prediction mode. The embodiment determines target code amounts for pictures according to the variables IntraSAD, InterSAD, and (X).

摘要翻译： 公开了一种编码装置，编码方法，编码方法程序和记录编码方法程序的记录介质。 本发明可应用于使用卫星广播，有线电视，因特网，蜂窝电话等的电影的传输，以及在诸如光盘，磁光盘，闪速存储器等的记录介质上记录运动图像， 例如。 以这种方式，编码装置也可以被构造为用作解码装置和图像转换装置。 本发明的实施例可以简化这种编码装置的整体结构。 本发明的实施例在编码处理之前检测用于帧内预测和帧间预测的最佳预测模式。 该实施例根据检测到的最佳预测模式检测表示差分数据大小的变量IntraSAD，InterSAD和（X）。 该实施例根据变量IntraSAD，InterSAD和（X）确定图像的目标代码量。

公开(公告)号：US08649442B2

公开(公告)日：2014-02-11

申请号：US13559117

申请日：2012-07-26

申请人： Kazushi Sato ,  Teruhiko Suzuki ,  Osamu Sunohara ,  Yoichi Yagasaki

发明人： Kazushi Sato ,  Teruhiko Suzuki ,  Osamu Sunohara ,  Yoichi Yagasaki

IPC分类号： H04N7/12

CPC分类号： H04N19/52 ,  H03M7/4006 ,  H04N19/13 ,  H04N19/16 ,  H04N19/176 ,  H04N19/513 ,  H04N19/537

摘要： An encoding apparatus and an encoding method, a decoding apparatus and a decoding method, a recording medium, and a program suitable for encoding image signals with a higher compression ratio for transmission or accumulation. In an arithmetic coding section, from among the syntax elements of input image compression information, the frame/field flag is first encoded by a frame/field flag context model. When the macroblock to be processed is subjected to frame-based encoding, a frame-based context model, specified in the current H.26L standard, is applied. On the other hand, when the macroblock to be processed is subjected to field-based encoding, a field-based context model is applied for the syntax elements described below. The present invention is applied to an encoder for encoding image information and a decoder for decoding image information.

公开(公告)号：US08619875B2

公开(公告)日：2013-12-31

申请号：US13559066

申请日：2012-07-26

申请人： Kazushi Sato ,  Teruhiko Suzuki ,  Osamu Sunohara ,  Yoichi Yagasaki

发明人： Kazushi Sato ,  Teruhiko Suzuki ,  Osamu Sunohara ,  Yoichi Yagasaki

IPC分类号： H04N7/12

CPC分类号： H04N19/52 ,  H03M7/4006 ,  H04N19/13 ,  H04N19/16 ,  H04N19/176 ,  H04N19/513 ,  H04N19/537

摘要： An encoding apparatus and an encoding method, a decoding apparatus and a decoding method, a recording medium, and a program suitable for encoding image signals with a higher compression ratio for transmission or accumulation. In an arithmetic coding section, from among the syntax elements of input image compression information, the frame/field flag is first encoded by a frame/field flag context model. When the macroblock to be processed is subjected to frame-based encoding, a frame-based context model, specified in the current H.26L standard, is applied. On the other hand, when the macroblock to be processed is subjected to field-based encoding, a field-based context model is applied for the syntax elements described below. The present invention is applied to an encoder for encoding image information and a decoder for decoding image information.

公开(公告)号：US20130010874A1

公开(公告)日：2013-01-10

申请号：US13619759

申请日：2012-09-14

申请人： Kazushi SATO ,  Teruhiko Suzuki ,  Osamu Sunohara ,  Yoichi Yagasaki

发明人： Kazushi SATO ,  Teruhiko Suzuki ,  Osamu Sunohara ,  Yoichi Yagasaki

IPC分类号： H04N7/32

CPC分类号： H04N19/52 ,  H03M7/4006 ,  H04N19/13 ,  H04N19/16 ,  H04N19/176 ,  H04N19/513 ,  H04N19/537

摘要： An encoding apparatus and an encoding method, a decoding apparatus and a decoding method, a recording medium, and a program suitable for encoding image signals with a higher compression ratio for transmission or accumulation. In an arithmetic coding section, from among the syntax elements of input image compression information, the frame/field flag is first encoded by a frame/field flag context model. When the macroblock to be processed is subjected to frame-based encoding, a frame-based context model, specified in the current H.26L standard, is applied. On the other hand, when the macroblock to be processed is subjected to field-based encoding, a field-based context model is applied for the syntax elements described below. The present invention is applied to an encoder for encoding image information and a decoder for decoding image information.

公开(公告)号：US20120288011A1

公开(公告)日：2012-11-15

申请号：US13559117

申请日：2012-07-26

申请人： Kazushi SATO ,  Teruhiko Suzuki ,  Osamu Sunohara ,  Yoichi Yagasaki

发明人： Kazushi SATO ,  Teruhiko Suzuki ,  Osamu Sunohara ,  Yoichi Yagasaki

IPC分类号： H04N7/32

CPC分类号： H04N19/52 ,  H03M7/4006 ,  H04N19/13 ,  H04N19/16 ,  H04N19/176 ,  H04N19/513 ,  H04N19/537

摘要： An encoding apparatus and an encoding method, a decoding apparatus and a decoding method, a recording medium, and a program suitable for encoding image signals with a higher compression ratio for transmission or accumulation. In an arithmetic coding section, from among the syntax elements of input image compression information, the frame/field flag is first encoded by a frame/field flag context model. When the macroblock to be processed is subjected to frame-based encoding, a frame-based context model, specified in the current H.26L standard, is applied. On the other hand, when the macroblock to be processed is subjected to field-based encoding, a field-based context model is applied for the syntax elements described below. The present invention is applied to an encoder for encoding image information and a decoder for decoding image information.

公开(公告)号：US20120287991A1

公开(公告)日：2012-11-15

申请号：US13559080

申请日：2012-07-26

申请人： Kazushi SATO ,  Osamu Sunohara ,  Teruhiko Suzuki ,  Peter Kuhn ,  Yoichi Yagasaki ,  Kuniaki Takahashi

发明人： Kazushi SATO ,  Osamu Sunohara ,  Teruhiko Suzuki ,  Peter Kuhn ,  Yoichi Yagasaki ,  Kuniaki Takahashi

IPC分类号： H04N7/26

CPC分类号： H04N19/124 ,  H04N7/26244 ,  H04N7/26335 ,  H04N7/26941 ,  H04N7/50 ,  H04N19/126 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/40 ,  H04N19/44 ,  H04N19/60 ,  H04N19/61 ,  H04N19/625

摘要： A packetizing method for packetizing a bit stream in a packetizing apparatus. The packetizing method includes encoding, in an encoding unit in the multiplexing apparatus, a chroma component of image data using a chroma quantization parameter calculated on the basis of a luma quantization parameter weighted by an addition operation that adds a weight parameter and generating the bit stream. The method further includes packetizing, in a packetizing unit in the packetizing apparatus, the bit stream and generating a packetized stream.

摘要翻译： 一种分组化方法，用于在打包装置中打包比特流。 分组化方法包括：在多路复用装置的编码单元中，使用基于通过加权重参数加权的亮度量化参数计算的色度量化参数，对图像数据的色度分量进行编码，该相加运算附加权重参数并生成比特流 。 该方法还包括在分组化装置中的分组单元中分组比特流并生成分组化流。