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1. 发明授权

US5831619A System for generating image of three-dimensional object seen from specified viewpoint 失效
标题翻译：用于从指定的角度生成三维物体的图像的系统
公开(公告)号：US5831619A
公开(公告)日：1998-11-03
申请号：US521133
申请日：1995-08-29
申请人： Akira Nakagawa , Akihiro Yamori , Eishi Morimatsu , Hiroshi Harashima , Robert Hsu , Kazuya Kodama
发明人： Akira Nakagawa , Akihiro Yamori , Eishi Morimatsu , Hiroshi Harashima , Robert Hsu , Kazuya Kodama
IPC分类号： G03C9/08 , G06T1/60 , G03B21/32
CPC分类号： G06T1/60
摘要： An image generation apparatus is provided with an image acquisition unit for acquiring images of a three-dimensional object from a plurality of positions along a curve by computer graphics or a television camera. A memory unit stores images obtained by the image acquisition unit. An address generating unit calculates a first address showing the position of the image acquisition and a second address showing the position corresponding to the direction of the line of sight in the image according to the first address, for each line of sight from a specified viewpoint according to the positional information for the viewpoint and the curve at the time of image acquisition. An image generation processing unit combines the image information read from the memory unit by the first and second addresses generated by the address generating unit and generates the image of the three-dimensional object. Display equipment displays the image.
摘要翻译：图像生成装置具有图像获取单元，用于通过计算机图形或电视摄像机从曲线的多个位置获取三维物体的图像。存储单元存储由图像获取单元获得的图像。地址生成单元根据第一地址，从指定的视点计算表示图像采集的位置的第一地址和表示与图像中的视线的方向对应的位置的第二地址，涉及图像获取时的视点和曲线的位置信息。图像生成处理单元将从存储单元读取的图像信息与由地址生成单元生成的第一和第二地址相结合，生成三维物体的图像。显示设备显示图像。

2. 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.

3. 发明申请

US20070121727A1 Motion vector encoding device and decoding device 有权
公开(公告)号：US20070121727A1
公开(公告)日：2007-05-31
申请号：US11651014
申请日：2007-01-09
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： H04N11/02 , H04N11/04
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.

4. 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。

5. 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。

6. 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。

7. 发明授权

US07310372B2 Motion vector encoding device and decoding device 有权
公开(公告)号：US07310372B2
公开(公告)日：2007-12-18
申请号：US10375127
申请日：2003-02-28
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.

8. 发明授权

US06697425B1 Dynamic image encoding apparatus and method for encoding a dynamic image 失效
标题翻译：用于编码动态图像的动态图像编码装置和方法
公开(公告)号：US06697425B1
公开(公告)日：2004-02-24
申请号：US09450061
申请日：1999-11-29
申请人： Akira Nakagawa , Eishi Morimatsu , Taizo Anan , Wolfgang Niem
发明人： Akira Nakagawa , Eishi Morimatsu , Taizo Anan , Wolfgang Niem
IPC分类号： H04B166
CPC分类号： H04N19/103 , H04N19/122 , H04N19/14 , H04N19/169 , H04N19/70
摘要： The present invention discloses a dynamic image encoding apparatus and a method for encoding a dynamic image in which the dynamic image is divided into data blocks, the data blocks are encoded, and then block division information including a size of a picture or a size of the encoded data blocks is inserted at a position after a synchronous code in a header of each group including a plurality of the encoded data blocks when the groups are transmitted.
摘要翻译：本发明公开了一种用于对动态图像进行编码的动态图像编码装置和方法，其中动态图像被划分为数据块，数据块被编码，然后包括图像尺寸或尺寸的块分割信息编码数据块被插入到在发送组时在包括多个编码数据块的每个组的头部中的同步码之后的位置。

9. 发明授权

US6078617A Apparatus and method for coding and decoding video images 失效
标题翻译：视频图像编码和解码的装置和方法
公开(公告)号：US6078617A
公开(公告)日：2000-06-20
申请号：US956104
申请日：1997-10-24
申请人： Akira Nakagawa , Eishi Morimatsu , Kiichi Matsuda
发明人： Akira Nakagawa , Eishi Morimatsu , Kiichi Matsuda
IPC分类号： H04N5/907 , F16B31/00 , G06T9/00 , H04N5/92 , H04N7/01 , H04N19/132 , H04N19/149 , H04N19/15 , H04N19/172 , H04N19/423 , H04N19/46 , H04N19/50 , H04N19/503 , H04N19/51 , H04N19/59 , H04N19/60 , H04N19/61 , H04N19/625 , H04N19/70 , H04N19/85 , H04N19/91 , H04N7/12
CPC分类号： F16B31/00 , H04N19/132 , H04N19/176 , H04N19/59 , H04N19/61
摘要： An apparatus and method for coding and decoding digital video images, capable of maintaining the quality of static regions, such as background images, in decoded pictures even when the resolution of pictures has been changed from high to low. The apparatus is equipped with two storage units, low-resolution and high-resolution picture storage units, to hold reference pictures in two different picture formats. When processing coded blocks (or blocks having at least one non-zero transform coefficient), a high-resolution picture updating unit converts corresponding blocks of a low-resolution reference picture retrieved from the low-resolution picture storage unit to obtain high-resolution block images. It then updates a high-resolution picture stored in the high-resolution picture storage unit with the obtained high-resolution block images. This updating operation is not applied on non-coded blocks. As a result, only active regions corresponding to the coded blocks are updated within the picture stored in the high-resolution picture storage unit, while the remaining part, which may possibly be static background images, is preserved without losing their high visual quality.
摘要翻译：数字视频图像的编码和解码装置和方法，即使当图像的分辨率从高变为低时，也能够在解码图像中保持诸如背景图像之类的静态区域的质量。该设备配备有两个存储单元，低分辨率和高分辨率图像存储单元，以保存两种不同图像格式的参考图像。当处理编码块（或具有至少一个非零变换系数的块）时，高分辨率图像更新单元将从低分辨率图像存储单元检索的低分辨率参考图像的相应块转换为高分辨率块图片。然后利用获得的高分辨率块图像来更新存储在高分辨率图像存储单元中的高分辨率图像。该更新操作不适用于非编码块。结果，只有与编码块相对应的有效区域在存储在高分辨率图像存储单元中的图像内被更新，而可能是静态背景图像的剩余部分被保存而不会失去其高的视觉质量。

10. 发明授权

US5754317A Holographic stereogram based on a cosine transform 失效
标题翻译：基于余弦变换的全息立体图
公开(公告)号：US5754317A
公开(公告)日：1998-05-19
申请号：US567741
申请日：1995-12-05
申请人： Akira Nakagawa , Eishi Morimatsu , Makiko Konoshima , Kiichi Matsuda
发明人： Akira Nakagawa , Eishi Morimatsu , Makiko Konoshima , Kiichi Matsuda
IPC分类号： G03H1/08 , G03H1/26 , G02B27/22
CPC分类号： G03H1/08 , G03H1/268
摘要： A holographic stereogram which includes a plurality of element holograms and which reproduces a stereoscopic image by irradiation of coherent light, wherein each element hologram is loaded with a modulation value (pattern) corresponding to the stereoscopic image, the modulation value being a one-dimensional or two-dimensional transform coefficient obtained by one-dimensional or two-dimensional cosine transform or discrete cosine transform of the distribution of the intensity of diffraction light expressing the stereoscopic image, enabling simplification of the drive system of the display device displaying the stereoscopic image and reproduction of the original stereoscopic image much more faithfully.
摘要翻译：一种全息立体图，其包括多个元素全息图，并且通过相干光的照射再现立体图像，其中每个元素全息图被加载对应于立体图像的调制值（图案），调制值是一维或通过一维或二维余弦变换获得的二维变换系数或表示立体图像的衍射光强度分布的离散余弦变换，能够简化显示立体图像和再现的显示装置的驱动系统的原始立体图像更忠实。

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