公开(公告)号：US20120320981A1

公开(公告)日：2012-12-20

申请号：US13480304

申请日：2012-05-24

申请人： Satoshi SHIMADA ,  Akira NAKAGAWA ,  Kimihiko KAZUI ,  Junpei KOYAMA

发明人： Satoshi SHIMADA ,  Akira NAKAGAWA ,  Kimihiko KAZUI ,  Junpei KOYAMA

IPC分类号： H04N7/34

CPC分类号： H04N19/52 ,  H04N19/103 ,  H04N19/105 ,  H04N19/176 ,  H04N19/31 ,  H04N19/33 ,  H04N19/503 ,  H04N19/51 ,  H04N19/521 ,  H04N19/543 ,  H04N19/577 ,  H04N19/587

摘要： A video decoding apparatus includes a reference picture list storing unit configured to store picture information of pictures; a motion vector information storing unit configured to store motion vector information including motion vectors of blocks that are spatially and temporally adjacent to a target block to be decoded and reference picture identifiers indicating pictures that the motion vectors refer to; and a vector predictor generating unit configured to scale a vector predictor candidate for a motion vector of the target block based on the picture information and the motion vector information and to correct the scaled vector predictor candidate toward 0 by a predetermined amount.

摘要翻译： 视频解码装置包括：参考图像列表存储单元，被配置为存储图像的图像信息; 运动矢量信息存储单元，被配置为存储运动矢量信息，该运动矢量信息包括空间和时间上与要解码的目标块相邻的块的运动矢量，以及指示运动矢量所参照的图像的参考图像标识符; 以及矢量预测器生成单元，被配置为基于所述图像信息和所述运动矢量信息来缩放所述目标块的运动矢量的矢量预测器候选，并将所述经缩放的矢量预测器候选朝向0修正预定量。

公开(公告)号：US6104826A

公开(公告)日：2000-08-15

申请号：US948083

申请日：1997-10-09

申请人： Akira Nakagawa ,  Kimihiko Kazui ,  Atsuko Tada ,  Eishi Morimatsu ,  Koich Tanaka

发明人： Akira Nakagawa ,  Kimihiko Kazui ,  Atsuko Tada ,  Eishi Morimatsu ,  Koich Tanaka

IPC分类号： H04N7/08 ,  G06T1/00 ,  H03M7/30 ,  H04N1/32 ,  H04N1/387 ,  H04N7/081 ,  G06K9/00

CPC分类号： H04N19/467 ,  G06T1/0028 ,  H04N1/32154 ,  H04N1/32165 ,  H04N21/23892 ,  H04N21/8358 ,  G06T2201/0052 ,  G06T2201/0083 ,  H04N2201/3233 ,  H04N2201/327

摘要： The present invention relates to methods for watermark-embedding/extracting identification information into/from picture data and apparatuses thereof. When identification information is watermark-embedded, the following steps are performed. Combinations of basis functions orthogonal each other are generated in association with each numerical signal. For each combination of the orthogonal basis functions, a weight coefficient is calculated so as to correspond to the combination of the basis functions by calculating a sum of products of values of the basis functions for pixels in the original picture data and pixel values of the pixels. For each numerical signal, a watermark-embedding function is referred, a input value is specified, and a pixel value is changed. When the identification information is extracted from the picture data, for each weight coefficient, the watermark-embedding function is referred, and the value of the watermark-embedding function is calculated for each weight coefficient.

摘要翻译： 本发明涉及用于将图像数据中的识别信息进行水印嵌入/提取的方法及其装置。 当识别信息嵌入水印时，执行以下步骤。 与每个数字信号相关联地产生彼此正交的基函数的组合。 对于正交基函数的每个组合，通过计算原始图像数据中的像素的基本函数的值和像素的像素的乘积之和来计算权重系数，以便对应于基函数的组合 。 对于每个数字信号，参考水印嵌入功能，指定输入值，并改变像素值。 当从图像数据中提取识别信息时，对于每个权重系数，参照水印嵌入功能，并且针对每个权重系数计算水印嵌入函数的值。

公开(公告)号：US6104434A

公开(公告)日：2000-08-15

申请号：US877508

申请日：1997-06-17

申请人： Akira Nakagawa ,  Kimihiko Kazui ,  Eishi Morimatsu ,  Takahiro Shimizu

发明人： Akira Nakagawa ,  Kimihiko Kazui ,  Eishi Morimatsu ,  Takahiro Shimizu

IPC分类号： H04N19/50 ,  G06T9/00 ,  H03M7/30 ,  H03M7/36 ,  H04N19/107 ,  H04N19/117 ,  H04N19/126 ,  H04N19/13 ,  H04N19/136 ,  H04N19/139 ,  H04N19/15 ,  H04N19/152 ,  H04N19/167 ,  H04N19/176 ,  H04N19/196 ,  H04N19/423 ,  H04N19/503 ,  H04N19/51 ,  H04N19/59 ,  H04N19/61 ,  H04N19/625 ,  H04N19/80 ,  H04N19/86 ,  H04N19/91 ,  H04N7/30

CPC分类号： H04N19/59 ,  H04N19/105 ,  H04N19/117 ,  H04N19/134 ,  H04N19/139 ,  H04N19/152 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/527 ,  H04N19/61 ,  H04N19/82 ,  H04N19/86

摘要： Video coding apparatus and decoding apparatus capable of reproducing decoded pictures without introducing unwanted noises, even if any considerable difference in pixel values or discontinuity exists at a certain block boundary. In a video coding apparatus employing predictive techniques, a dequantizer and an inverse DCT processor reproduce a prediction error signal from quantized transform coefficients. Here, a first resolution conversion unit (or downsampling unit) might have subsampled the original prediction error signal to reduce its picture resolution. If this is the case, a second resolution conversion unit (or upsampling unit) attempts to restore the original resolution of the prediction error signal by applying an upsampling process to the reproduced prediction error signal having the reduced resolution. In this upsampling process, each new pixel value in a certain block are calculated with reference to some surrounding pixels. The upsampling process, however, will not refer to the pixels belonging to any adjacent blocks that are subject to another coding scheme which is different from the coding scheme of the present block of interest. As an alternate arrangement, the upsampling process will entirely neglect the pixels in any other blocks but will refer only to the present block.

摘要翻译： 即使在某个块边界处存在像素值或不连续性的任何相当大的差异，也能够再现解码图像而不引入不需要的噪声的视频编码装置和解码装置。 在采用预测技术的视频编码装置中，去量化器和逆DCT处理器从量化变换系数再现预测误差信号。 这里，第一分辨率转换单元（或下采样单元）可以对原始预测误差信号进行二次采样以降低其图像分辨率。 如果是这种情况，则第二分辨率转换单元（或上采样单元）尝试通过对具有降低的分辨率的再现的预测误差信号应用上采样处理来恢复预测误差信号的原始分辨率。 在该上采样处理中，参考一些周围像素计算某个块中的每个新像素值。 然而，上采样处理将不涉及属于与当前感兴趣块的编码方案不同的另一编码方案的属于任何相邻块的像素。 作为替代布置，上采样处理将完全忽略任何其他块中的像素，但将仅引用当前块。

公开(公告)号：US5737256A

公开(公告)日：1998-04-07

申请号：US505857

申请日：1995-07-24

申请人： Akira Nakagawa ,  Kimihiko Kazui

发明人： Akira Nakagawa ,  Kimihiko Kazui

IPC分类号： G06F17/14 ,  G06T1/20 ,  H03M7/30 ,  H04N1/41 ,  H04N19/42 ,  H04N19/423 ,  H04N19/60 ,  H04N19/625

CPC分类号： G06F17/147

摘要： An 8-point inverse discrete cosine transform (IDCT) is decomposed into four 2-point IDCTs. The four 2-point IDCTs are implemented by four parallel-operating product-sum computing circuits. Each product-sum computing circuit comprises a single multiplying means and accomplishes computation of eight points in four clock cycles. Part of the multiplying means may be implemented by bit shift operation, and others by a semifixed multiplier. A two-dimensional 8.times.8 IDCT circuit is constructed which comprises three semifixed multipliers and one ordinary multiplier, and accomplishes IDCT computation of 8.times.8 points in 64 clock cycles.

摘要翻译： 8点逆离散余弦变换（IDCT）被分解成4个2点IDCT。 四个2点IDCT由四个并行操作乘积和计算电路实现。 每个乘积和计算电路包括单个乘法装置，并且在四个时钟周期内完成八个点的计算。 乘法装置的一部分可以通过位移操作来实现，而另一些乘以半固定乘法器。 构建了一个二维8x8 IDCT电路，它包括三个半定义乘法器和一个普通乘法器，并且在64个时钟周期内完成8×8点的IDCT计算。

公开(公告)号：US5642174A

公开(公告)日：1997-06-24

申请号：US697250

申请日：1996-08-21

申请人： Kimihiko Kazui ,  Eishi Morimatsu

发明人： Kimihiko Kazui ,  Eishi Morimatsu

IPC分类号： H04N19/50 ,  G06T9/00 ,  H04N19/102 ,  H04N19/142 ,  H04N19/176 ,  H04N19/189 ,  H04N19/196 ,  H04N19/42 ,  H04N19/423 ,  H04N19/44 ,  H04N19/46 ,  H04N19/503 ,  H04N19/70 ,  H04N19/87 ,  H04N19/91 ,  H04N7/32

CPC分类号： H04N19/00 ,  H04N19/142 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/48 ,  H04N19/61 ,  H04N19/87 ,  H04N19/70

摘要： A scene change detecting device of a relatively small circuit scale is capable of accurately detecting a scene change using data which have already been compressed and coded. The scene change detecting device has an extracting circuit for extracting frame type information, frame identification information, and block type information from a coded signal of a moving picture which has been processed by block-adaptive interframe predictive coding. The block type information is sent to a counter, and the frame type information and the frame identification information are sent to a frame estimating circuit. Based on the block type information, the counter counts macroblocks with respect to each of the types of predictive processes over one frame. The frame estimating circuit estimates a frame immediately following a scene change based on the counted number of macroblocks with respect to each of the types of predictive processes, the frame type information, and the frame identification information.

摘要翻译： 具有相对小的电路规模的场景变化检测装置能够使用已经被压缩和编码的数据来精确地检测场景变化。 场景变化检测装置具有提取电路，用于从已经通过块自适应帧间预测编码处理的运动图像的编码信号中提取帧类型信息，帧识别信息和块类型信息。 块类型信息被发送到计数器，并且帧类型信息和帧识别信息被发送到帧估计电路。 基于块类型信息，计数器对相对于一帧中的每种预测处理的宏块进行计数。 帧估计电路基于相对于各种预测处理，帧类型信息和帧识别信息中的每一种的宏块的计数数来估计紧随场景变化之后的帧。

公开(公告)号：US09094683B2

公开(公告)日：2015-07-28

申请号：US13602415

申请日：2012-09-04

申请人： Junpei Koyama ,  Akihiro Yamori ,  Kimihiko Kazui ,  Satoshi Shimada ,  Akira Nakagawa

发明人： Junpei Koyama ,  Akihiro Yamori ,  Kimihiko Kazui ,  Satoshi Shimada ,  Akira Nakagawa

IPC分类号： H04N19/00 ,  H04N19/16 ,  H04N19/513 ,  H04N19/107 ,  H04N19/112

CPC分类号： H04N19/16 ,  H04N19/107 ,  H04N19/112 ,  H04N19/513

摘要： A method includes extracting a first vector used to code a specific block belonging to a coded field picture arranged chronologically adjacent to a field picture to be coded and to a block to be coded, generating a second vector by scaling the first vector based on a temporal distance between the field picture and a second picture specified by a reference index and referenced for the block and included in the field picture and a temporal distance between a first picture pointed by the first vector and the coded field picture arranged chronologically adjacent to the field picture, and correcting the second vector based on a parity of the field picture, a parity of the first picture, a parity of the second picture and a parity of the coded field picture and forming the corrected second vector.

摘要翻译： 一种方法包括提取用于对属于按时间顺序排列的编码场图像编码的第一矢量编码与要编码的场图像相邻的块，并且生成第二矢量，通过基于时间 场图像之间的距离和由参考索引指定并被参考并包括在场图像中的第二图像之间的距离以及由第一矢量指向的第一图像与按时间顺序与场图像排列相邻的编码场图像之间的时间距离 并且基于场图像的奇偶校验，第一图像的奇偶校验，第二图像的奇偶校验和编码的场图像的奇偶校验来校正第二矢量，并且形成校正的第二矢量。

公开(公告)号：US08681864B2

公开(公告)日：2014-03-25

申请号：US13137792

申请日：2011-09-13

申请人： Kimihiko Kazui

发明人： Kimihiko Kazui

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

CPC分类号： H04N19/436 ,  H04N19/105 ,  H04N19/114 ,  H04N19/115 ,  H04N19/126 ,  H04N19/147 ,  H04N19/15 ,  H04N19/159 ,  H04N19/172 ,  H04N19/177 ,  H04N19/196 ,  H04N19/61

摘要： In a video coding apparatus, a plurality of coding units perform compression coding of a single source stream of video data. A control unit controls those coding units in such a way that all the coding units produce respective interframe coded pictures with identical playback times as a first-coded picture in a picture group (e.g., GOP) and produce identical local decoded pictures based on the respective intraframe coded pictures. A selection decision unit makes a selection, for each picture group, of one of the coded video data from the coding units on the basis of their coding results. According to this selection, a selection unit selectively outputs one of the coded video data. This output switching operation is performed at a point immediately before a forward interframe predictive coded picture that appears first of those in a picture group included in each of the coded video data outputs being switched.

摘要翻译： 在视频编码装置中，多个编码部对视频数据的单个源流执行压缩编码。 控制单元以这样的方式控制这些编码单元，使得所有编码单元产生与图像组（例如，GOP）中的第一编码图像具有相同重放时间的相应帧间编码图像，并且基于相应的图像编码单元产生相同的局部解码图像 帧内编码图片。 选择判定单元根据编码结果对来自编码单元的编码图像数据中的每一个图像组进行选择。 根据该选择，选择单元选择性地输出编码视频数据之一。 该输出切换操作在紧接在切换包含在每个编码视频数据输出中的图像组中的那些首先出现的前向帧间预测编码图像之前的点执行。

公开(公告)号：US08606024B2

公开(公告)日：2013-12-10

申请号：US11774328

申请日：2007-07-06

申请人： Kimihiko Kazui ,  Kohji Yamada ,  Takashi Itoh

发明人： Kimihiko Kazui ,  Kohji Yamada ,  Takashi Itoh

IPC分类号： G06K9/36 ,  G06K9/46

CPC分类号： H04N19/162 ,  H04N19/105 ,  H04N19/139 ,  H04N19/172 ,  H04N19/51 ,  H04N19/52 ,  H04N19/597 ,  H04N19/61

摘要： There are provided a device and a method capable of increasing the processing speed and preventing the increase of the device size by eliminating decompression/decoding processing not required for decompression/decoding of a moving picture of a point-of-view desired by a user. The decompression/decoding device includes: instruction input means for receiving an instruction for a frame to be outputted; judgment means for reading out motion prediction information from the moving picture data and judging the frame used for motion prediction in compression/encoding of the frame to be outputted; and decompression/decoding means for decompressing/decoding only the frame judged by the judgment means and the frame to be outputted.

摘要翻译： 提供了一种能够通过消除用户所期望的视点的运动图像的解压缩/解码不需要的解压缩/解码处理来提高处理速度并防止设备尺寸增加的装置和方法。 解压缩/解码装置包括：指令输入装置，用于接收要输出的帧的指令; 判断装置，用于从运动图像数据中读出运动预测信息，并且判断用于要输出的帧的压缩/编码中的运动预测的帧; 以及用于仅解压缩/解码由判断装置判断的帧和要输出的帧的解压缩/解码装置。

公开(公告)号：US20130107958A1

公开(公告)日：2013-05-02

申请号：US13611742

申请日：2012-09-12

申请人： Satoshi SHIMADA ,  Kimihiko KAZUI ,  Junpei KOYAMA ,  Akira NAKAGAWA

发明人： Satoshi SHIMADA ,  Kimihiko KAZUI ,  Junpei KOYAMA ,  Akira NAKAGAWA

IPC分类号： H04N7/32 ,  H04N7/34

CPC分类号： H04N19/198 ,  H04N19/51 ,  H04N19/52 ,  H04N19/593

摘要： A video decoding apparatus according to one aspect of the disclosure performs a decoding process, on a process block basis, using a motion vector of the process block and prediction information candidates of the motion vector. The video decoding apparatus includes a first prediction information candidate generating part configured to acquire the prediction information of the adjacent block to generate the prediction information candidate if motion compensation of the block is performed using the same prediction information as the prediction information of the adjacent block; and a second prediction information candidate generating part configured to add prediction information to the prediction information candidates if the number of the prediction information candidates is less than a predetermined number and two prediction information items of the prediction information candidates have the reference picture identifiers indicating the same picture, the added prediction information including an averaged motion vector of two motion vectors.

摘要翻译： 根据本公开的一个方面的视频解码装置在处理块的基础上，使用处理块的运动矢量和运动矢量的预测信息候选来执行解码处理。 视频解码装置包括第一预测信息候补生成部，被配置为获取相邻块的预测信息，以生成预测信息候选，如果使用与相邻块的预测信息相同的预测信息来执行块的运动补偿; 以及第二预测信息候选生成部，被配置为如果所述预测信息候选的数量少于预定数量而将预测信息添加到所述预测信息候选，并且所述预测信息候选的两个预测信息项具有指示相同的参考图像标识符 图像，添加的预测信息包括两个运动矢量的平均运动矢量。

公开(公告)号：US08306338B2

公开(公告)日：2012-11-06

申请号：US12171130

申请日：2008-07-10

申请人： Akira Nakagawa ,  Hidenobu Miyoshi ,  Kimihiko Kazui ,  Hisanari Kimura

发明人： Akira Nakagawa ,  Hidenobu Miyoshi ,  Kimihiko Kazui ,  Hisanari Kimura

IPC分类号： G06K9/36

CPC分类号： H04N19/55 ,  H04N19/105 ,  H04N19/107 ,  H04N19/16 ,  H04N19/17 ,  H04N19/174 ,  H04N19/186 ,  H04N19/523

摘要： A moving-picture coding device that performs inter-field motion compensation prediction, includes a reference limit area determining unit that determines to select, for each reference picture, with respect to reference pictures used for coding, a luminance or chrominance reference limit area putting a limit to a reference picture used for generating a prediction picture of a luminance or chrominance of a coding target block belonging to the coding target picture limit area of the case upon each reference picture being previously coded; a selecting inhibit vector determining unit that determines, in a case of coding the coding block belonging to the coding target picture limit area, a selecting inhibit vector that inhibits selecting a luminance and the chrominance are comprised only of pixels of the luminance reference limit area and the chrominance reference limit area.

摘要翻译： 执行场间运动补偿预测的运动图像编码装置包括参考限制区域确定单元，其确定对于每个参考图像，对于用于编码的参考图像，将亮度或色度参考限制区域放入 限制为用于生成属于预先对每个参考图像进行编码的情况的编码对象图像限制区域的编码对象块的亮度或色度的预测图像的参考图像; 选择禁止向量确定单元，其在对编码对象图像限制区域的编码块进行编码的情况下，决定禁止选择亮度和色度的选择禁止矢量，仅包含亮度基准极限区域的像素， 色度参考极限区域。