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1. 发明授权

US06333949B1 Video coding apparatus and decoding apparatus 有权
标题翻译：视频编码装置和解码装置
公开(公告)号：US06333949B1
公开(公告)日：2001-12-25
申请号：US09474133
申请日：1999-12-29
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： H04N736
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, block-by-block basis, comprising the substep of (b1) performing an upsampling process of each block with the low resolution to regain the high resolution, while not referring, when calculating a pixel value in a block that is subject to one of the coding schemes, to any pixels that belong to any other block adjacent to the block of interest if the adjacent block is subject to the other coding scheme, but referring at least to the pixels belonging to the block of interest.
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，但将逐块地参考当前块，包括（b1）的子步骤，以低的速率执行每个块的上采样处理分辨率重新获得高分辨率，而当计算受到编码方案之一的块中的像素值而不指向属于与感兴趣块相邻的任何其他块的任何像素时，如果相邻块为对象至少涉及属于感兴趣块的像素。

2. 发明授权

US5805222A Video coding apparatus 失效
标题翻译：视频编码装置
公开(公告)号：US5805222A
公开(公告)日：1998-09-08
申请号：US743171
申请日：1996-11-04
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 , H04N19/126 , H04N19/132 , H04N19/134 , H04N19/146 , H04N19/152 , H04N19/172 , H04N19/196 , H04N19/423 , H04N19/436 , H04N19/503 , H04N19/51 , H04N19/59 , H04N19/61 , H04N19/625 , H04N19/85 , H04N19/91 , H04N7/50
CPC分类号： H04N19/59 , H04N19/117 , H04N19/132 , H04N19/15 , H04N19/152 , H04N19/156 , H04N19/157 , H04N19/169 , H04N19/172 , H04N19/61 , H04N19/80 , H04N19/82 , H04N19/85 , H04N19/146
摘要： A video coding apparatus for performing predictive coding of digital video input signals. The apparatus employs a resolution selection controller that selects picture resolution to be used in coding of a source picture of a current frame, according to coding information in a previous frame. Such coding information includes quantizer step size, amount of coded data, and buffer occupancy. Before being supplied to a coding unit, the source picture is sent to a resolution converter, where the source picture is converted to gain the resolution selected by said resolution selection controller. The coding unit then encodes the source picture with the selected picture resolution.
摘要翻译：一种用于执行数字视频输入信号的预测编码的视频编码装置。该装置采用分辨率选择控制器，其根据前一帧中的编码信息选择要在当前帧的源图像的编码中使用的图像分辨率。这样的编码信息包括量化器步长，编码数据量和缓冲器占用。在提供给编码单元之前，将源图像发送到分辨率转换器，其中源图像被转换以获得由所述分辨率选择控制器选择的分辨率。然后，编码单元以所选择的图像分辨率对源图像进行编码。

3. 发明授权

US6104826A Method of watermark-embedding/extracting identification information into/from picture data and apparatus thereof, and computer readable medium 失效
标题翻译：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以及计算机可读介质
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。

4. 发明授权

US6104434A Video coding apparatus and decoding apparatus 失效
标题翻译：视频编码装置和解码装置
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。

5. 发明授权

US06282243B1 Apparatus and method for interframe predictive video coding and decoding with capabilities to avoid rounding error accumulation 失效
标题翻译：用于帧间预测视频编码和解码的装置和方法，具有避免舍入误差累积的能力
公开(公告)号：US06282243B1
公开(公告)日：2001-08-28
申请号：US08972362
申请日：1997-11-18
申请人： Kimihiko Kazui , Akira Nakagawa , Eishi Morimatsu
发明人： Kimihiko Kazui , Akira Nakagawa , Eishi Morimatsu
IPC分类号： H04N736
CPC分类号： H04N19/523
摘要： A method and apparatus for interframe predictive video coding and decoding which avoid the accumulation of rounding errors and thus obtain high-quality reproduced pictures. A frame memory outputs at least one reference picture to a prediction picture calculation unit, according to motion vector information with half-pel accuracy. From the reference picture(s), the prediction picture calculation unit produces a prediction picture by performing interpolation operations if the motion vector has a half-pel component. Here, each interpolated pel value is rounded off to an integer according to a particular rounding algorithm specified by a calculation controller. More specifically, the prediction picture calculation unit supports a first algorithm that rounds off the pel values toward positive infinity and a second algorithm that rounds off them toward negative infinity. The calculation controller outputs a rounding control signal that directs the prediction picture calculation unit to select either of those two algorithms with substantially equal probabilities of occurrence.
摘要翻译：一种用于帧间预测视频编码和解码的方法和装置，其避免舍入误差的积累，从而获得高质量的再现图像。帧存储器根据具有半像素精度的运动矢量信息将至少一个参考图像输出到预测图像计算单元。如果运动矢量具有半像素分量，则从参考图像中，预测图像计算单元通过执行插值运算来产生预测图像。这里，每个内插像素值根据由计算控制器指定的特定舍入算法四舍五入为整数。更具体地，预测图像计算单元支持将像素值向正无穷大舍入的第一算法和将它们向负无穷大舍入的第二算法。计算控制器输出引导预测图像计算单元选择具有基本上相同的发生概率的那两个算法中的任一个的舍入控制信号。

6. 发明授权

US5825425A Moving-picture coding device employing intra-frame coding and inter-frame coding 失效
标题翻译：采用帧内编码和帧间编码的运动图像编码装置
公开(公告)号：US5825425A
公开(公告)日：1998-10-20
申请号：US754618
申请日：1996-11-21
申请人： Kimihiko Kazui , Akira Nakagawa , Eishi Morimatsu
发明人： Kimihiko Kazui , Akira Nakagawa , Eishi Morimatsu
IPC分类号： H04N19/50 , H03M7/30 , H03M7/36 , H04N19/102 , H04N19/105 , H04N19/107 , H04N19/126 , H04N19/134 , H04N19/137 , H04N19/139 , H04N19/142 , H04N19/167 , H04N19/176 , H04N19/196 , H04N19/423 , H04N19/503 , H04N19/51 , H04N19/61 , H04N19/625 , H04N19/65 , H04N19/67 , H04N19/85 , H04N19/87 , H04N19/91 , H04N7/50
CPC分类号： H04N19/152 , H04N19/124 , H04N19/176 , H04N19/61 , H04N19/107 , H04N19/146
摘要： A device for coding moving pictures includes a coding unit for applying intra-frame coding or inter-frame coding to the of blocks dividing each frame of the moving pictures. The device further includes a refresh-operation-control unit for controlling the coding unit to carry out the intra-frame coding as a refresh operation at predetermined intervals. The refresh-operation-control unit reschedules the predetermined intervals when the coding unit applies the intra-frame coding during one of the predetermined intervals, such that a timing of the intra-frame coding during the one of the predetermined intervals marks a start of a next one of the predetermined intervals.
摘要翻译：用于编码运动图像的装置包括：编码单元，用于对划分运动图像的每一帧的块应用帧内编码或帧间编码。该装置还包括刷新操作控制单元，用于控制编码单元以预定间隔执行帧内编码作为刷新操作。当编码单元在预定间隔期间之一施加帧内编码时，刷新操作控制单元重新调度预定间隔，使得在预定间隔之一期间的帧内编码的定时标记为下一个预定间隔。

7. 发明授权

US07324697B2 Data embedding device and data extraction device 有权
标题翻译：数据嵌入设备和数据提取设备
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。

8. 发明授权

US6025880A Moving picture encoding system and method 失效
标题翻译：运动图像编码系统及方法
公开(公告)号：US6025880A
公开(公告)日：2000-02-15
申请号：US965999
申请日：1997-11-07
申请人： Akira Nakagawa , Kimihiko Kazui , Eishi Morimatsu
发明人： Akira Nakagawa , Kimihiko Kazui , Eishi Morimatsu
IPC分类号： H04N19/50 , H03M7/30 , H04N19/107 , H04N19/132 , H04N19/136 , H04N19/137 , H04N19/139 , H04N19/14 , H04N19/149 , H04N19/152 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/423 , H04N19/46 , H04N19/463 , H04N19/503 , H04N19/51 , H04N19/52 , H04N19/70 , H04N7/50
CPC分类号： H04N19/61 , H04N19/51
摘要： A moving picture encoding system. There is provided a moving picture encoding system and method for changing the resolution of an original picture that is an object of encoding using a proper criterion, and encoding the picture while preventing deterioration of picture quality. A motion prediction/calculation means provides information of an error in prediction or of randomness of a motion vector which is calculated in the course of or as a result of motion prediction. A resolution determination means determines a resolution for the input picture to be encoded using the information. The input picture is converted into a picture having the determined resolution, and the picture resulting from the conversion is encoded and output.
摘要翻译：运动图像编码系统。提供了一种运动图像编码系统和方法，用于使用适当的标准来改变作为编码对象的原始图像的分辨率，并且在防止图像质量劣化的同时对图像进行编码。运动预测/计算装置提供在运动预测的过程中或作为运动预测的结果计算的运动矢量的预测误差或随机性的信息。分辨率确定装置使用该信息确定要编码的输入图像的分辨率。输入图像被转换成具有确定的分辨率的图像，并且由转换产生的图像被编码和输出。

9. 发明授权

US5838378A Moving image coding apparatus moving image decoding apparatus and moving coding-decoding apparatus 失效
标题翻译：运动图像编码装置，运动图像解码装置和运动图像编码解码装置
公开(公告)号：US5838378A
公开(公告)日：1998-11-17
申请号：US729303
申请日：1996-10-10
申请人： Akira Nakagawa , Kimihiko Kazui , Eishi Morimatsu
发明人： Akira Nakagawa , Kimihiko Kazui , Eishi Morimatsu
IPC分类号： G06T9/00 , H03M7/36 , H04N19/103 , H04N19/107 , H04N19/134 , H04N19/136 , H04N19/137 , H04N19/139 , H04N19/14 , H04N19/176 , H04N19/189 , H04N19/196 , H04N19/423 , H04N19/46 , H04N19/463 , H04N19/50 , H04N19/51 , H04N19/61 , H04N19/625 , H04N19/70 , H04N19/85 , H04N19/91 , H04N7/50
CPC分类号： H04N19/527 , H04N19/126 , H04N19/61 , H04N19/82 , H04N19/124
摘要： A moving image coding apparatus, a moving image decoding apparatus and a moving image coding-decoding apparatus suitable for use when a moving image is compressed and transmitted have a prediction error signal generating means for dividing an inputted image into blocks each consisting of plural pixels and computing a difference between the inputted image and a predicted image generated from a past inputted image to generate a prediction error signal, an amplitude modulating means for conducting amplitude modulation on an amplitude of each pixel of the prediction error signal at a predetermined modulation factor, a transforming means for transforming the prediction error signal having been undergone amplitude modulation in order to remove correlation among the pixels to generate a transform coefficient, a quantizing means for quantizing the generated transform coefficient, and a channel coding means for assigning a code to the quantized transform coefficient and outputting it, whereby a visually prominent error can be decreased over an entire block when the moving image is coded and decoded.
摘要翻译：运动图像编码装置，运动图像解码装置和运动图像编码解码装置，适用于当运动图像被压缩和发送时使用的预测误差信号产生装置，用于将输入的图像分割成由多个像素和计算输入图像与从过去输入图像生成的预测图像之间的差以产生预测误差信号;幅度调制装置，用于以预定调制因数对预测误差信号的每个像素的幅度进行幅度调制; 变换装置，用于变换已经进行幅度调制的预测误差信号，以消除像素之间的相关性以产生变换系数;量化所生成的变换系数的量化装置;以及用于将代码分配给量化变换的信道编码装置系数并输出，从而a 当运动图像被编码和解码时，视觉上突出的错误可以在整个块上减小。

10. 发明授权

US08345759B2 Motion vector encoding device and decoding device 有权
公开(公告)号：US08345759B2
公开(公告)日：2013-01-01
申请号：US11744432
申请日：2007-05-04
申请人： Akira Nakagawa , Taizo Anan , Eishi Morimatsu , Takashi Itoh
发明人： Akira Nakagawa , Taizo Anan , Eishi Morimatsu , Takashi Itoh
IPC分类号： H04N7/12
CPC分类号： H04N19/00587 , H04N19/105 , H04N19/12 , H04N19/13 , H04N19/137 , H04N19/15 , H04N19/176 , H04N19/51 , H04N19/513 , H04N19/52 , H04N19/61
摘要： A prediction error generating unit generates a predictive vector from the motion vectors of a plurality of adjacent blocks, and obtains a difference from a target vector. A plurality of variable-length coding units respectively encode the output of the prediction error generating unit with different encoding methods. A determining unit estimates the accuracy of the predictive vector generated by the prediction error generating unit based on the degrees of non-uniformity of the motion vectors of the plurality of adjacent blocks. A selecting unit selects one of the encoding results obtained by the plurality of variable-length coding units.

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