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：US20070253482A1

公开(公告)日：2007-11-01

申请号：US11774264

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： H04N7/12 ,  H04N7/18

CPC分类号： H04N19/61 ,  H04N19/105 ,  H04N19/139 ,  H04N19/172 ,  H04N19/46 ,  H04N19/51 ,  H04N19/52 ,  H04N19/597

摘要： There are provided a device and a method capable of improving the prediction efficiency and encoding efficiency by selecting an optimal frame used for prediction. There are provided a device and a method for compressing/encoding a frame imaged by a plurality of cameras including a standard camera in which a frame imaged by itself is compressed/encoded by a motion prediction using only the frame imaged by itself and a reference camera in which a frame imaged by itself is compressed/encoded by a motion prediction using the frame imaged by itself and the motion prediction using the frame imaged by another camera. When compressing/encoding the frame imaged by the reference camera, a frame to be used for motion prediction is decided according to the motion of an object in the imaged frame before the frame to be processed is imaged.

摘要翻译： 提供了一种能够通过选择用于预测的最佳帧来提高预测效率和编码效率的装置和方法。 提供了一种用于压缩/编码由包括标准相机的多个照相机成像的帧的设备和方法，其中通过仅使用其自身成像的帧的参考摄像机对其自身成像的帧进行压缩/编码 其中通过使用由其自身成像的帧的运动预测和使用由另一相机成像的帧的运动预测来对其自身成像的帧进行压缩/编码。 当对由参考相机成像的帧进行压缩/编码时，在被处理帧被成像之前，根据被成像帧中的对象的运动来确定要用于运动预测的帧。

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：US20130044808A1

公开(公告)日：2013-02-21

申请号：US13570566

申请日：2012-08-09

申请人： Akira Nakagawa ,  Kimihiko Kazui ,  Hidenobu Miyoshi ,  Junpei Koyama

发明人： Akira Nakagawa ,  Kimihiko Kazui ,  Hidenobu Miyoshi ,  Junpei Koyama

IPC分类号： H04N7/32

CPC分类号： H04N19/167 ,  H04N19/105 ,  H04N19/13 ,  H04N19/182 ,  H04N19/593

摘要： A encoding device includes a boundary pixel prediction value generation unit, boundary pixel prediction error estimation unit, and a quantized coefficient encoding unit. The boundary pixel prediction value generation unit generates a boundary pixel prediction value as a prediction value of a boundary pixel adjacent to an encoded block in the encoding block from a locally decoded image of a plurality of encoded blocks adjacent to the encoding block. The boundary pixel prediction error estimation unit generates boundary pixel prediction error estimation information from the boundary pixel prediction value and the encoding block prediction image with respect to the boundary pixel. The quantized coefficient encoding unit generates encoding block entropy encoded data from the quantized coefficients and the boundary pixel prediction error estimation information.

摘要翻译： 编码装置包括边界像素预测值生成单元，边界像素预测误差估计单元和量化系数编码单元。 边界像素预测值生成单元从与编码块相邻的多个编码块的局部解码图像生成边界像素预测值作为与编码块中的编码块相邻的边界像素的预测值。 边界像素预测误差估计单元从边界像素预测值和编码块预测图像生成相对于边界像素的边界像素预测误差估计信息。 量化系数编码单元从量化系数和边界像素预测误差估计信息生成编码块熵编码数据。

公开(公告)号：US20120320980A1

公开(公告)日：2012-12-20

申请号：US13472197

申请日：2012-05-15

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： H04N7/32

CPC分类号： H04N19/577 ,  H04N19/463 ,  H04N19/52 ,  H04N19/573

摘要： A video decoding apparatus includes a motion vector information storing unit configured to store motion vectors of blocks in previously-decoded pictures and a temporally-adjacent vector predictor generating unit. The temporally-adjacent vector predictor generating unit includes a block determining unit configured to determine multiple blocks in a picture that is temporally adjacent to a picture including a target block to be processed, the determined blocks including a block that is closest to first coordinates in the target block; a vector selecting unit configured to obtain motion vectors of the determined blocks from the motion vector information storing unit and select at least one motion vector from the obtained motion vectors; and a generating unit configured to generate a vector predictor candidate, which is used for a decoding process of the target block, based on the selected motion vector.

摘要翻译： 视频解码装置包括：运动矢量信息存储单元，被配置为存储先前解码的图像中的块的运动矢量和时间相邻的矢量预测器生成单元。 时间相邻矢量预测器生成单元包括：块确定单元，被配置为确定在时间上与包括要处理的目标块的图像相邻的图像中的多个块，所确定的块包括最接近于待处理的目标块的块 目标块; 矢量选择单元，被配置为从所述运动矢量信息存储单元获取所确定的块的运动矢量，并从所获得的运动矢量中选择至少一个运动矢量; 以及生成单元，被配置为基于所选择的运动矢量生成用于目标块的解码处理的向量预测器候选。

公开(公告)号：US20090016621A1

公开(公告)日：2009-01-15

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。

公开(公告)号：US07324697B2

公开(公告)日：2008-01-29

申请号：US10637587

申请日：2003-08-11

申请人： Kimihiko Kazui ,  Akira Nakagawa ,  Eishi Morimatsu

发明人： Kimihiko Kazui ,  Akira Nakagawa ,  Eishi Morimatsu

IPC分类号： G06K9/36

CPC分类号： G06T1/0035 ,  G06T2201/0053

摘要： A data embedding device includes a dynamic image storage unit storing inter-frame prediction coded dynamic image data, an embedding data storage unit storing embedding data that is embedded into the inter-frame prediction coded dynamic image data, and an embedding unit embedding the embedding data into a rounding direction flag contained per frame data in the inter-frame prediction coded dynamic image data.

摘要翻译： 数据嵌入装置包括存储帧间预测编码动态图像数据的动态图像存储单元，存储嵌入在帧间预测编码动态图像数据中的嵌入数据的嵌入数据存储单元，嵌入嵌入数据的嵌入单元 进入帧间预测编码动态图像数据中每帧数据所包含的舍入方向标志。