公开(公告)号：US07409098B2

公开(公告)日：2008-08-05

申请号：US10733255

申请日：2003-12-12

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

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

IPC分类号： G06K9/00 ,  G06K9/36 ,  G06K9/38 ,  G06K9/46 ,  H04B1/66 ,  H04N1/00 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04

CPC分类号： H04N19/42 ,  H04N19/115 ,  H04N19/126 ,  H04N19/14 ,  H04N19/149 ,  H04N19/152 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/177 ,  H04N19/61

摘要： An image processing apparatus is provided that can define the change amount of a quantizing parameter by suitably reflecting the complexity of image data in the case, when the quantizing parameter is increased a predetermined unit amount, the coarseness the image data of motion picture is quantized becomes r times. An activity computing circuit generates an activity Nactj serving as a complexity of the image data. A ΔQ computing circuit defines a corresponding relationship between activity Nactj and change amount data ΔQ such that the change amount data ΔQ of quantizing parameter increases 1 as the activity Nactj becomes 1.12 times, to thereby acquire change amount data ΔQ corresponding to the activity Nactj generated by the activity computing circuit.

摘要翻译： 提供一种图像处理装置，其可以通过在量化参数增加预定单位量的情况下适当地反映图像数据的复杂度来定义量化参数的变化量，使运动图像的图像数据量化的粗糙度变为 r次。 活动计算电路产生用作图像数据的复杂度的活动Nact。 DeltaQ计算电路定义活动Nact和改变量数据DeltaQ之间的对应关系，使得量化参数的变化量数据DeltaQ随着活动Nact 增加1，变为1.12 从而获取与由活动计算电路生成的活动Nact相关的变化量数据DeltaQ。

公开(公告)号：US20080049837A1

公开(公告)日：2008-02-28

申请号：US11628301

申请日：2005-06-01

申请人： Junichi Tanaka ,  Kazushi Sato ,  Tsukasa Hashino ,  Yoichi Yagasaki

发明人： Junichi Tanaka ,  Kazushi Sato ,  Tsukasa Hashino ,  Yoichi Yagasaki

IPC分类号： H04N7/26 ,  H04B1/66 ,  H04N11/02

CPC分类号： H04N19/587 ,  H04N19/103 ,  H04N19/132 ,  H04N19/139 ,  H04N19/176 ,  H04N19/61

摘要： Motion prediction and compensation circuit does not select Skip mode and Direct mode in motion prediction and compensation mode when a difference between prediction motion vector and actual motion vector exceed predetermined standard.

摘要翻译： 当预测运动矢量和实际运动矢量之间的差异超过预定标准时，运动预测和补偿电路不会在运动预测和补偿模式中选择跳跃模式和直接模式。

公开(公告)号：US20070286501A1

公开(公告)日：2007-12-13

申请号：US11836467

申请日：2007-08-09

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 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 dequantization such that a quantization parameter is weighted by an addition operation, and the dequantization is performed on each chroma components of the quantized coefficients using said weighted quantization parameter, and performing an inverse orthogonal transform.

摘要翻译： 一种图像信息解码方法，用于对通过包括将输入图像信号分割为块的处理进行了编码的压缩图像信息进行解码，对该块进行正交变换，并对所得到的正交变换系数进行量化。 解码处理包括进行解量化，使得量化参数通过加法运算加权，并且使用所述加权量化参数对量化系数的每个色度分量执行去量化，并执行逆正交变换。

公开(公告)号：US20070286281A1

公开(公告)日：2007-12-13

申请号：US10590413

申请日：2005-01-27

申请人： Toshiharu Tsuchiya ,  Kazushi Sato ,  Toru Wada ,  Yoichi Yagasaki ,  Makoto Yamada

发明人： Toshiharu Tsuchiya ,  Kazushi Sato ,  Toru Wada ,  Yoichi Yagasaki ,  Makoto Yamada

IPC分类号： H04N11/02

CPC分类号： H04N19/436 ,  H04N19/132 ,  H04N19/139 ,  H04N19/176 ,  H04N19/43 ,  H04N19/56 ,  H04N19/61

摘要： In a picture information encoding apparatus that outputs picture compression information according to a picture encoding system such as MPEG4/AVC, when it is determined whether the mode of a predetermined block is a skip mode or a spatial direct mode, moving vector information and so forth for all of predetermined adjacent blocks needs to have been computed. However, when each block is processed in parallel to speed up the entire processes, moving vector information and so forth of the predetermined adjacent blocks may not be always obtained. In this case, moving vector information and so forth of neighbor blocks instead of adjacent blocks are pseudo-used to determine the mode of the block without need to wait until moving vector information and so forth of adjacent blocks have been computed.

摘要翻译： 在根据诸如MPEG4 / AVC的图像编码系统输出图像压缩信息的图像信息编码装置中，当确定预定块的模式是否是跳过模式还是空间直接模式时，移动矢量信息等 需要对所有预定的相邻块进行计算。 然而，当并行处理每个块以加速整个处理时，可能不总是获得预定相邻块的移动矢量信息等。 在这种情况下，相邻块而不是相邻块的移动矢量信息等被伪使用以确定块的模式，而不需要等待，直到已经计算出相邻块的移动矢量信息等。

公开(公告)号：US07266286B2

公开(公告)日：2007-09-04

申请号：US09992101

申请日：2001-11-14

申请人： Seiji Tanizawa ,  Satoru Tobita ,  Hideaki Miyauchi ,  Kazushi Sato ,  Keiji Hirai

发明人： Seiji Tanizawa ,  Satoru Tobita ,  Hideaki Miyauchi ,  Kazushi Sato ,  Keiji Hirai

IPC分类号： H04N5/93

CPC分类号： G11B27/036 ,  G11B27/005 ,  G11B27/034 ,  G11B27/038 ,  G11B27/34 ,  G11B2220/213 ,  G11B2220/2512 ,  G11B2220/2545 ,  G11B2220/415

摘要： Temporarily storing audio data to be reproduced in the block form, temporarily storing synthesized audio data in the block form, generating and supplying a reference signal, and calculating the first address of the block of audio data, the editing system of the present invention enables identifying the buffering position of the recording signal and then matching the position to the reproduced signal, resulting in quick editing.

摘要翻译： 临时存储要以块形式再现的音频数据，以块形式临时存储合成音频数据，生成和提供参考信号，并计算音频数据块的第一地址，本发明的编辑系统能够识别 记录信号的缓冲位置，然后将位置与再现信号进行匹配，导致快速编辑。

公开(公告)号：US07224732B2

公开(公告)日：2007-05-29

申请号：US10947197

申请日：2004-09-23

申请人： Kuniaki Takahashi ,  Kazushi Sato ,  Teruhiko Suzuki

发明人： Kuniaki Takahashi ,  Kazushi Sato ,  Teruhiko Suzuki

IPC分类号： H04N7/12

CPC分类号： H04N19/577 ,  H04N19/105 ,  H04N19/107 ,  H04N19/112 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176 ,  H04N19/40 ,  H04N19/46 ,  H04N19/51 ,  H04N19/523 ,  H04N19/56 ,  H04N19/587 ,  H04N19/59 ,  H04N19/61

摘要： The invention provides a motion vector conversion method by which the coding efficiency in image coding of MPEG4 in an image information conversion method can be further augmented. In the motion vector conversion method for an image information conversion method, every other one of P frames of a bit stream of MPEG2 is dropped to produce a bit stream of MPEG4 of a reduced frame rate and a low bit rate. Also for motion vector modification, information of each of macro blocks and between blocks in the inputted bit stream representative of image compression information of MPEG2 is stored in advance, and motion vectors of a P frame immediately preceding to each P frame to be dropped are duplicated based on the stored information. Then, the duplicated motion vectors are extended to twice in the temporal direction to produce motion vectors of MPEG4 converted from an intra-frame of MPEG2.

摘要翻译： 本发明提供一种运动矢量转换方法，通过该方法可以进一步增强图像信息转换方法中MPEG4的图像编码的编码效率。 在用于图像信息转换方法的运动矢量转换方法中，丢弃MPEG2比特流的P帧中的每一个以产生具有降低的帧速率和低比特率的MPEG4的比特流。 此外，对于运动矢量修改，预先存储代表MPEG2的图像压缩信息的输入比特流中的每个宏块和块之间的信息，并且复制每个待丢弃的P帧之前的P帧的运动矢量 基于存储的信息。 然后，将复制的运动矢量在时间方向上扩展到两次，以产生从MPEG2的帧内转换的MPEG4的运动矢量。

公开(公告)号：US07116835B2

公开(公告)日：2006-10-03

申请号：US10196259

申请日：2002-07-17

申请人： Kuniaki Takahashi ,  Kazushi Sato ,  Yoichi Yagasaki

发明人： Kuniaki Takahashi ,  Kazushi Sato ,  Yoichi Yagasaki

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

CPC分类号： H04N19/59 ,  H04N19/124 ,  H04N19/132 ,  H04N19/15 ,  H04N19/152 ,  H04N19/172 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/40 ,  H04N19/523 ,  H04N19/56 ,  H04N19/61

摘要： A normalized activity calculating unit calculates a normalized activity that is calculated from luminescence component pixel values of an original image on the basis of information from an information buffer, such as bit rate, an amount of bits generated in each frame, and an amount of bits generated and a quantization step size in each macroblock. The normalized activity calculating unit then outputs the normalized activity to a code amount control unit. The code amount control unit calculates a quantization scale code corresponding to a target bit rate, which quantization scale code matches visual characteristics, using the normalized activity inputted from the normalized activity calculating unit, and then outputs the quantization scale code to a quantizing unit. The quantizing unit quantizes discrete cosine transform coefficients inputted from a band limiting unit on the basis of the quantization scale code inputted to the quantizing unit.

摘要翻译： 归一化活动计算单元基于来自信息缓冲器的信息，例如比特率，每帧中生成的位数和位数来计算从原始图像的发光分量像素值计算的归一化活动度 生成和每个宏块中的量化步长。 归一化活动计算单元然后将归一化活动输出到码量控制单元。 代码量控制单元使用从归一化活动性计算单元输入的归一化活动来计算与目标比特率相对应的量化尺度代码与量化尺度代码匹配视觉特性的量化尺度代码，然后将量化尺度代码输出到量化单元。 量化单元基于输入到量化单元的量化比例代码量化从频带限制单元输入的离散余弦变换系数。

公开(公告)号：US20060146183A1

公开(公告)日：2006-07-06

申请号：US11300317

申请日：2005-12-15

申请人： Ohji Nakagami ,  Kazushi Sato ,  Yoichi Yagasaki

发明人： Ohji Nakagami ,  Kazushi Sato ,  Yoichi Yagasaki

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

CPC分类号： H04N19/124 ,  H04N19/186 ,  H04N19/523 ,  H04N19/57 ,  H04N19/61

摘要： An image processing apparatus and an encoding device able to raise an encoding efficiency and a quality of a decoded image in comparison with a conventional apparatus and methods of the same, specifically image processing apparatus for processing a plurality of blocks defined in a two-dimensional image region in units of blocks, comprising a difference detecting unit for detecting the difference between a color difference enhancement block enhancing a color difference component with respect to a luminance component of a block to be processed in a picture to be processed or a block used for processing that block to be processed and the luminance block of the luminance component obtained from that block and a processing unit for performing processing strongly reflecting an influence of the color difference component of the block to be processed or processing not causing loss of information of the color difference component even when the difference detected by the difference detecting unit exceeds a predetermined threshold value compared with a case where the difference does not exceed the predetermined threshold value.

摘要翻译： 与常规装置及其方法相比，能够提高编码效率和解码图像质量的图像处理装置和编码装置，具体地说，用于处理在二维图像中定义的多个块的图像处理装置 区域，包括差异检测单元，用于检测在待处理图像中要处理的块的亮度分量和用于处理的块之间的色差分量增强的色差增强块之间的差异 要处理的块和从该块获得的亮度分量的亮度块和用于执行强烈反映要处理的块的色差分量的影响的处理或不导致色差的信息丢失的处理的处理单元 分量即使当差异检测单位检测到差异时 与差不超过预定阈值的情况相比，t超过预定阈值。

公开(公告)号：US07061981B2

公开(公告)日：2006-06-13

申请号：US09970306

申请日：2001-10-04

申请人： Kuniaki Takahashi ,  Kazushi Sato ,  Teruhiko Suzuki

发明人： Kuniaki Takahashi ,  Kazushi Sato ,  Teruhiko Suzuki

IPC分类号： H04N7/12

CPC分类号： H04N19/40 ,  H04N19/51

摘要： The invention provides a motion vector conversion method by which the coding efficiency in image coding of MPEG4 in an image information conversion method can be augmented. In the motion vector conversion method for an image information conversion method wherein a bit stream representative of interlaced scanned image compression information of MPEG2 is inputted and a bit stream representative of progressively scanned image compression information of MPEG4 is outputted, 16×16 motion vectors of MPEG2 of the inputted bit stream representative of image compression information of MPEG2 are accepted successively, and 8×8 motion vectors of MPEG4 and 16×16 motion vectors of MPEG4 are produced successively based on the 16×16 motion vectors of MPEG2. Every other one of I frames and P frames of the bit stream of MPEG2 is dropped to produce a bit stream of MPEG4 of a reduced frame rate and a low bit rate.

摘要翻译： 本发明提供一种运动矢量转换方法，通过该方法可以增强图像信息转换方法中的MPEG4的图像编码中的编码效率。 在其中输入代表MPEG2的隔行扫描图像压缩信息的比特流并且输出代表逐渐扫描的MPEG4图像压缩信息的比特流的图像信息转换方法的运动矢量转换方法中，输出MPEG2的16×16个运动矢量 输入代表MPEG2的图像压缩信息的比特流被连续地接受，并且基于MPEG2的16×16个运动矢量连续地产生MPEG4的MPEG4和16x16运动矢量的8×8个运动矢量。 MPEG2的比特流的I帧和P帧中的每一个被丢弃以产生具有降低的帧速率和低比特率的MPEG4的比特流。

公开(公告)号：US20050190841A1

公开(公告)日：2005-09-01

申请号：US11113299

申请日：2005-04-25

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

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

IPC分类号： H04N19/50 ,  G06T9/00 ,  H04N19/103 ,  H04N19/134 ,  H04N19/136 ,  H04N19/142 ,  H04N19/146 ,  H04N19/172 ,  H04N19/186 ,  H04N19/19 ,  H04N19/196 ,  H04N19/20 ,  H04N19/40 ,  H04N19/423 ,  H04N19/51 ,  H04N19/59 ,  H04N19/60 ,  H04N19/625 ,  H04N19/85 ,  H04N19/91 ,  H04N7/12

CPC分类号： H04N19/40 ,  H04N19/115 ,  H04N19/126 ,  H04N19/139 ,  H04N19/14 ,  H04N19/142 ,  H04N19/149 ,  H04N19/159 ,  H04N19/172 ,  H04N19/196 ,  H04N19/20 ,  H04N19/463 ,  H04N19/51 ,  H04N19/61

摘要： The invention provides an image information conversion apparatus and method by which picture quality deterioration caused by conversion from inputted MPEG2 image compression information into MPEG4 image compression information to be outputted is prevented. When an I picture of an MPEG2 bit stream is to be converted into a P-VOP of an MPEG4 bit stream based on an estimated value of the complexity for each VOP, a scene change detection section detects whether or not the I picture includes a scene change. If a scene change is detected by the scene change detection section, then a GOV structure determination section determines that conversion of the I picture of the MPEG2 bit stream into a P-VOP of an MPEG4 bit stream should not be performed.