公开(公告)号：US20060188021A1

公开(公告)日：2006-08-24

申请号：US11360495

申请日：2006-02-24

申请人： Mitsuru Suzuki ,  Shigeyuki Okada

发明人： Mitsuru Suzuki ,  Shigeyuki Okada

IPC分类号： H04N11/02 ,  H04N11/04 ,  H04N7/12 ,  H04B1/66

CPC分类号： H04N19/53 ,  G06T7/207 ,  H04N19/105 ,  H04N19/152 ,  H04N19/433

摘要： A motion vector detecting unit 24 detects a motion vector between an input image and a reference image. A reduced image creation unit 40 reads out pixel data of the reference image from the frame memory, and creates a reduced image at a lower resolution than that of the original reference image. A reduced image holding unit 42 stores a part or all of the reduced image thus created. A computation unit 44 performs matching computation between the input image and the reference image using the reduced images, thereby detecting an approximate motion vector. Subsequently, the computation unit 44 detects a motion vector using the images at the original resolution with reference to the approximate motion vector. When the computation unit 44 detects the motion vector using the reduced images, a part of the reduced image stored in the reduced image holding unit 42 is not newly created, and is read out from the reduced image holding unit 42.

摘要翻译： 运动矢量检测单元24检测输入图像和参考图像之间的运动矢量。 缩小图像创建单元40从帧存储器读出参考图像的像素数据，并以比原始参考图像低的分辨率创建缩小图像。 缩小图像保持单元42存储由此产生的缩小图像的一部分或全部。 计算单元44使用缩小图像执行输入图像和参考图像之间的匹配计算，从而检测近似运动矢量。 随后，计算单元44参照近似运动矢量使用原始分辨率的图像来检测运动矢量。 当计算单元44使用缩小图像检测运动矢量时，不重新创建存储在缩小图像保持单元42中的部分缩小图像，并且从缩小图像保持单元42读出。

公开(公告)号：US20060123460A1

公开(公告)日：2006-06-08

申请号：US11337517

申请日：2006-01-24

申请人： Shigeyuki Okada ,  Kouichi Yamada ,  Mamoru Mukuno

发明人： Shigeyuki Okada ,  Kouichi Yamada ,  Mamoru Mukuno

IPC分类号： H04N7/16

CPC分类号： H04N21/4383 ,  H04N5/4401 ,  H04N21/4263 ,  H04N21/433 ,  H04N21/4382 ,  H04N21/44016 ,  H04N21/44209 ,  H04N21/4435

摘要： The digital broadcast receiving apparatus according to the present invention includes a tuning unit for outputting normal image data for performing a normal reproduction operation corresponding to a user selected channel, a memory unit for outputting background image data for performing a background reproduction operation when the normal reproduction operation cannot be performed, a data selector for receiving the normal image data and the background image data and outputting one of the normal image data and the background image data, and an MPEG video decode unit for decoding image data output by the data selector to generate an image signal. The tuning unit successively receives the respective channel selected in the background independently of the user selection, and stores the background image data corresponding to the respective channels in the memory unit.

公开(公告)号：US20050220323A1

公开(公告)日：2005-10-06

申请号：US11090012

申请日：2005-03-28

申请人： Shigeyuki Okada ,  Yoshihiro Matsuo ,  Shinichiro Okada

发明人： Shigeyuki Okada ,  Yoshihiro Matsuo ,  Shinichiro Okada

IPC分类号： G06K9/00 ,  G06K9/36 ,  H04N1/387 ,  H04N1/41 ,  H04N7/24 ,  H04N19/34 ,  H04N19/60 ,  H04N19/635 ,  H04N19/91

CPC分类号： G11B20/00818 ,  G11B20/00086 ,  G11B27/3027 ,  G11B2020/00079 ,  H04N19/61 ,  H04N19/647

摘要： The image processing apparatus comprises a wavelet transform unit, a frame buffer, a quantization unit, a bit plane coding unit, an arithmetic coding unit, and a stream generating unit, and converts an original image into coded image data hierarchically by using these units. A copyright level management table manages copyright levels to be permitted to users who use the coded image data. A copyright level recording unit records copyright level information on the corresponding profile into a header or other areas of the coded image data in consideration of such factors as users and regions to be provided.

摘要翻译： 该图像处理装置包括小波变换单元，帧缓冲器，量化单元，位平面编码单元，算术编码单元和流生成单元，并且通过使用这些单元分层地将原始图像转换为编码图像数据。 版权级管理表管理被允许使用编码图像数据的用户的版权级别。 考虑到诸如用户和要提供的区域的因素，版权级别记录单元将相应简档上的版权级别信息记录到编码图像数据的标题或其他区域中。

公开(公告)号：US5854799A

公开(公告)日：1998-12-29

申请号：US564478

申请日：1995-11-29

申请人： Shigeyuki Okada ,  Naoki Tanahashi ,  Hayato Nakashima

发明人： Shigeyuki Okada ,  Naoki Tanahashi ,  Hayato Nakashima

IPC分类号： H04N19/895 ,  H03M13/00

CPC分类号： H04N19/00 ,  H04N19/577 ,  H04N19/61 ,  H04N19/895 ,  H04N19/70

摘要： A video decoding apparatus for decoding encoded video data to continuously produce decoded pictures. The video data includes a series of pictures, each picture contains a series of slices, and each slice contains a series of macroblocks. A dequantizer performs dequantization of the video data based upon a quantization threshold value. A motion-vector restoring circuit restores data for each macroblock. A direct current error detector is provided to detect erroneous macroblocks based upon the dequantized data. A motion-area error detector is provided to detect erroneous macroblocks based upon the restored motion vector data. An erroneous macroblock is replaced by a corresponding macroblock from a preceding picture. Subsequent macroblocks in a slice may also be replaced by corresponding macroblocks from a preceding picture.

摘要翻译： 一种视频解码装置，用于对编码的视频数据进行解码以连续地产生解码的图像。 视频数据包括一系列图像，每个图像包含一系列切片，并且每个切片包含一系列宏块。 去量化器基于量化阈值来执行视频数据的逆量化。 运动矢量恢复电路恢复每个宏块的数据。 提供直流电流误差检测器以根据去量化的数据来检测错误的宏块。 提供运动区域误差检测器以根据恢复的运动矢量数据检测错误的宏块。 错误的宏块由来自前一图片的相应宏块代替。 切片中的后续宏块也可以由来自前一图片的相应宏块代替。

公开(公告)号：US5754241A

公开(公告)日：1998-05-19

申请号：US557615

申请日：1995-11-14

申请人： Shigeyuki Okada ,  Keita Kawahara ,  Naoki Tanahashi ,  Hayato Nakashima

发明人： Shigeyuki Okada ,  Keita Kawahara ,  Naoki Tanahashi ,  Hayato Nakashima

IPC分类号： G06T9/00 ,  H04N7/32 ,  H04N7/46 ,  H04N7/50

CPC分类号： H04N19/587 ,  H04N19/132 ,  H04N19/14 ,  H04N19/152 ,  H04N19/159 ,  H04N19/172 ,  H04N19/184 ,  H04N19/44 ,  H04N19/61 ,  H04N19/146 ,  H04N19/50

摘要： An MPEG video decoder capable of preventing a buffer for storing a video stream from overflowing and/or underflowing. The video decoding apparatus decodes a coded video bit stream including a series of pictures to produce decoded pictures. The video decoding apparatus includes: a bit buffer for temporarily storing the video bit stream, a decoding circuit for receiving the video bit stream output from the bit buffer and decoding the video bit stream to produce decoded pictures, and a video bit stream control circuit for controlling an amount of the video bit stream to be supplied to the decoding circuit from the bit buffer based on an amount of data of the video bit stream stored in the bit buffer.

摘要翻译： MPEG视频解码器能够防止用于存储视频流溢出和/或下溢的缓冲器。 视频解码装置对包括一系列图像的编码视频比特流进行解码以产生解码图像。 视频解码装置包括：用于临时存储视频比特流的比特缓冲器，用于接收从比特缓冲器输出的视频比特流并解码视频比特流以产生解码图像的解码电路;以及视频比特流控制电路， 基于存储在比特缓冲器中的视频比特流的数据量，控制从比特缓冲器提供给解码电路的视频比特流的量。

公开(公告)号：US08326058B2

公开(公告)日：2012-12-04

申请号：US13029748

申请日：2011-02-17

申请人： Kazuhiko Taketa ,  Shigeyuki Okada

发明人： Kazuhiko Taketa ,  Shigeyuki Okada

IPC分类号： G06K9/36

CPC分类号： H04N19/1883 ,  H04N19/126 ,  H04N19/127 ,  H04N19/156 ,  H04N19/162 ,  H04N19/17 ,  H04N19/184 ,  H04N19/63 ,  H04N19/647

摘要： A wavelet transform unit performs a wavelet transform on original images and a quantization unit quantizes wavelet transform coefficients. A ROI selector selects a region of interest or regions of interest in the original image, and a ROI mask generator generates ROI masks with which the wavelet transform coefficients (which are also called ROI transform coefficients) corresponding to the regions of interest are specified. By referring to the ROI masks, a lower-bit zero substitution unit substitutes low-order bits of non-ROI transform coefficients with zeros. An entropy coding unit entropy-codes the wavelet transform coefficients sequentially from high-order bit-planes, after the substitution. A coded data generator turns coded data into streams together with parameters and then outputs coded images.

摘要翻译： 小波变换单元对原始图像执行小波变换，量化单元量化小波变换系数。 ROI选择器在原始图像中选择感兴趣区域或感兴趣区域，并且ROI掩码生成器生成与掩盖了感兴趣区域对应的小波变换系数（也称为ROI变换系数）的ROI掩模。 通过参考ROI掩模，较低位零取代单元用零代替非ROI变换系数的低阶位。 熵编码单元在替代之后从高阶位平面顺序地对小波变换系数进行熵编码。 编码数据发生器将编码数据与参数一起转换成流，然后输出编码图像。

公开(公告)号：US08208738B2

公开(公告)日：2012-06-26

申请号：US11718291

申请日：2005-10-25

申请人： Shigeyuki Okada ,  Kazuhiko Taketa

发明人： Shigeyuki Okada ,  Kazuhiko Taketa

IPC分类号： G06K9/36 ,  G06K9/46

CPC分类号： H04N19/537 ,  H04N19/105 ,  H04N19/17 ,  H04N19/63 ,  H04N19/70

摘要： In an image coding apparatus, a ROI setting unit sets a ROI region in an image. An entropy coding unit entropy-codes the image. A ROI information coding unit encodes information for specifying the ROI region. A codestream generator generates a codestream in a manner that the coded image and the coded information are explicitly included in the codestream. When a plurality of ROI regions are set in the image, the information may include a degree of priority.

公开(公告)号：US08134612B2

公开(公告)日：2012-03-13

申请号：US12076716

申请日：2008-03-21

申请人： Shigeyuki Okada ,  Noriaki Kojima ,  Hiroshi Hanafusa

发明人： Shigeyuki Okada ,  Noriaki Kojima ,  Hiroshi Hanafusa

IPC分类号： H04N5/76 ,  H04N5/222

CPC分类号： H04N1/212 ,  H04N1/2112 ,  H04N1/2137 ,  H04N5/23293 ,  H04N5/772 ,  H04N5/907 ,  H04N9/7921

摘要： In a digital camera, when snapshot shooting is instructed during recording of a moving image, a shot still image is temporarily pushed aside in a memory area for use in pushing aside (7a) in a frame buffer (7). A currently shooting motion image and a still image are displayed in parallel on a display (9), so that a user can confirm a content of a snapshot. The moving image continues to be recorded even during a push-aside operation. After a moving image processing is completed, the still image is processed by an image correcting circuit (4). The frame buffer (7) comprises a plurality of frame recording areas, and is shared on the occasions of a moving image processing and a still image processing. In a normal moving image processing, these areas are utilized in a cyclic manner, and when the still image is shot, any of areas will be utilized. Thereafter, the rest of areas are utilized in the cyclic manner for the moving images. The recording function for the moving image and still image is improved at low cost, it becomes easy to take a snapshot, and the merchandise size is not increased.

公开(公告)号：US08126277B2

公开(公告)日：2012-02-28

申请号：US12073047

申请日：2008-02-28

申请人： Yasuo Ishii ,  Mitsuru Suzuki ,  Shigeyuki Okada

发明人： Yasuo Ishii ,  Mitsuru Suzuki ,  Shigeyuki Okada

IPC分类号： G06K9/36

CPC分类号： H04N19/17 ,  H04N19/105 ,  H04N19/124 ,  H04N19/152 ,  H04N19/176

摘要： A correlation evaluation unit evaluates a correction between a predetermined region in a targeted picture and a region corresponding to the region in a picture differing from the targeted picture in a temporal direction. A quantization control unit adaptively controls quantization processing for the predetermined region in the targeted picture, according to an evaluation obtained by the correlation evaluation unit. For example, when it is determined by an evaluation value obtained by the correlation evaluation unit that the correlation is weaker than a predetermined threshold value, the quantization control unit enlarges a quantization step used for quantization of the predetermined region.

摘要翻译： 相关评估单元在时间方向上评估目标图像中的预定区域和与目标图像不同的图像中的区域的区域之间的校正。 量化控制单元根据由相关评估单元获得的评估自适应地控制目标图像中的预定区域的量化处理。 例如，当由相关评估单元获得的评估值确定相关性弱于预定阈值时，量化控制单元放大用于量化预定区域的量化步长。

公开(公告)号：US08005309B2

公开(公告)日：2011-08-23

申请号：US11052094

申请日：2005-02-08

申请人： Kazuhiko Taketa ,  Shigeyuki Okada

发明人： Kazuhiko Taketa ,  Shigeyuki Okada

IPC分类号： G06K9/46

CPC分类号： H04N19/1883 ,  H04N19/126 ,  H04N19/127 ,  H04N19/156 ,  H04N19/162 ,  H04N19/17 ,  H04N19/184 ,  H04N19/63 ,  H04N19/647

摘要： A wavelet transform unit performs a wavelet transform on original images and a quantization unit quantizes wavelet transform coefficients. A ROI selector selects a region of interest or regions of interest in the original image, and a ROI mask generator generates ROI masks with which the wavelet transform coefficients (which are also called ROI transform coefficients) corresponding to the regions of interest are specified. By referring to the ROI masks, a lower-bit zero substitution unit substitutes low-order bits of non-ROI transform coefficients with zeros. An entropy coding unit entropy-codes the wavelet transform coefficients sequentially from high-order bit-planes, after the substitution. A coded data generator turns coded data into streams together with parameters and then outputs coded images.

摘要翻译： 小波变换单元对原始图像执行小波变换，量化单元量化小波变换系数。 ROI选择器在原始图像中选择感兴趣区域或感兴趣区域，并且ROI掩码生成器生成与掩盖了感兴趣区域对应的小波变换系数（也称为ROI变换系数）的ROI掩模。 通过参考ROI掩模，较低位零取代单元用零代替非ROI变换系数的低阶位。 熵编码单元在替代之后从高阶位平面顺序地对小波变换系数进行熵编码。 编码数据发生器将编码数据与参数一起转换成流，然后输出编码图像。