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公开(公告)号：EP1432249A4
公开(公告)日：2007-12-05
申请号：EP02758839
申请日：2002-08-12
发明人： HAGAI MAKOTO , KADONO SHINYA , KONDO SATOSHI , ABE KIYOFUMI
IPC分类号： H04N19/117 , G06T9/00 , H04N19/159 , H04N7/32
CPC分类号： H04N19/523 , H04N19/117 , H04N19/159 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/61 , H04N19/70 , H04N19/82
摘要： An image encoding apparatus 400 performing pixel interpolation for creating a prediction image selects one of a pixel interpolation unit A 403 and a pixel interpolation unit B 404 according to a value of the picture type signal PicType. When the picture type signal PicType has a value "0" indicating a B picture, the pixel interpolation unit A 403 is selected. The pixel interpolation unit A is realized by a pixel filter having the number of filter taps "4" for calculating the pixel value of 1/2 pixels of the prediction image. When the picture type signal PicType has a value "1" indicating a frame other than B picture, the pixel interpolation unit B 404 is selected. The pixel interpolation unit B is realized by a pixel filter having the number of filter taps "8".
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公开(公告)号：EP1411729A4
公开(公告)日：2007-03-07
申请号：EP03725587
申请日：2003-04-16
发明人： KONDO SATOSHI , KADONO SHINYA , HAGAI MAKOTO , ABE KIYOFUMI
CPC分类号： H04N19/52 , H04N19/103 , H04N19/105 , H04N19/107 , H04N19/127 , H04N19/136 , H04N19/137 , H04N19/159 , H04N19/16 , H04N19/172 , H04N19/176 , H04N19/184 , H04N19/30 , H04N19/423 , H04N19/46 , H04N19/51 , H04N19/513 , H04N19/573 , H04N19/577 , H04N19/58 , H04N19/583 , H04N19/61 , H04N19/70
摘要： A block (MB22) containing several motion vectors, is identified by a motion vector in a direct mode. A scaling is performed on a value obtained by selecting an average or one of the motion vectors, to determine two motion vectors (MV23,MV24) used for the picture-to-picture prediction of a picture (P23) to be encoded.
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3.发明公开MOTION VECTOR ENCODING METHOD AND MOTION VECTOR DECODING METHOD 有权BEWEGUNGSVEKTORCODIERUNGSVERFAHREN UND BEWEGUNGSVEKTORDECODIERUNGSVERFAHREN
公开(公告)号：EP1499133A4
公开(公告)日：2006-08-23
申请号：EP03719091
申请日：2003-04-10
发明人： KONDO SATOSHI , KADONO SHINYA , HAGAI MAKOTO , ABE KIYOFUMI
IPC分类号： H04N19/51 , H03M7/36 , H04N19/105 , H04N19/124 , H04N19/134 , H04N19/139 , H04N19/176 , H04N19/189 , H04N19/196 , H04N19/423 , H04N19/46 , H04N19/463 , H04N19/50 , H04N19/503 , H04N19/513 , H04N19/52 , H04N19/523 , H04N19/577 , H04N19/70 , H04N7/32
CPC分类号： H04N19/61 , H04N19/176 , H04N19/51 , H04N19/513 , H04N19/517 , H04N19/52 , H04N19/573
摘要： A motion vector encoding efficiency is improved when a block is encoded by using a plurality of motion vectors. A motion vector encoding unit (117) encodes motion vectors received from a motion vector detecting unit (108). Motion vectors in each block are encoded by a difference value from a prediction value obtained from motion vectors in an encoded surrounding block. When a prediction value is to be generated, motion vectors referring to the same picture are referenced, motion vectors to be referred to are determined according to the sequence of motion vectors arrange in a predetermined sequence. A second and subsequent motion vectors use as reference values preceding motion vectors. When motion vectors referring to different pictures are referenced, scheduling or the like is made according to a difference in distance between pictures.
摘要翻译： 当通过使用多个运动矢量对块进行编码时，运动矢量编码效率得以提高。 运动矢量编码单元（117）对从运动矢量检测单元（108）接收的运动矢量进行编码。 每个块中的运动矢量由与编码的周围块中的运动矢量获得的预测值的差值来编码。 当要产生预测值时，参照参考相同图片的运动矢量被参考，根据以预定顺序排列的运动矢量序列来确定要参考的运动矢量。 第二个和随后的运动矢量用作运动矢量之前的参考值。 当参照不同图片的运动矢量被参考时，根据图片之间的距离差异进行调度等。
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公开(公告)号：EP1475970A4
公开(公告)日：2006-07-12
申请号：EP03703124
申请日：2003-01-31
发明人： ABE KIYOFUMI , KADONO SHINYA , HAGAI MAKOTO , KONDO SATOSHI
IPC分类号： H04N19/105 , G06T9/00 , H04N19/00 , H04N19/107 , H04N19/114 , H04N19/115 , H04N19/134 , H04N19/136 , H04N19/162 , H04N19/423 , H04N19/426 , H04N19/46 , H04N19/50 , H04N19/503 , H04N19/51 , H04N19/573 , H04N19/593 , H04N19/70 , H04N7/26
CPC分类号： H04N19/00024 , H04N19/105 , H04N19/114 , H04N19/115 , H04N19/14 , H04N19/149 , H04N19/156 , H04N19/162 , H04N19/164 , H04N19/177 , H04N19/51 , H04N19/573 , H04N19/58 , H04N19/61
摘要： A moving image coding device (10a) comprises a level analyzer (100a) that determines the maximum number of codable on-screen pixels (Nfpx) based on a level identifier (Lst) indicating a user-specified coding level and the maximum number of stored pixels (Nspx) that can be stored in the picture memory of a decoding device. Based on the maximum number of on-screen pixels (Nfpx) and an input image size (number of vertical pixels (Nhpx) and number of horizontal pixels (Nwpx)), the moving image coding device (10a) determines if an input image can be coded and, at the same time, calculates the maximum number of reference pictures (Nrpn) that is the number of reference candidate pictures that can be referenced during inter-picture predictive coding. A decoding device, which receives a code string from such a moving picture coding device (10a), can always decode the code string properly and can perform inter-picture predictive decoding corresponding to inter-picture predictive coding on the coding side. As a result, it is possible to design the memory area of a coding device and a decoding device compatible with a coding method that does not limit the capacity of the memory area.
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公开(公告)号：EP1489848A4
公开(公告)日：2006-05-03
申请号：EP03708606
申请日：2003-03-14
发明人： HAGAI MAKOTO , KADONO SHINYA , KONDO SATOSHI
CPC分类号： H04N19/51 , H04N19/577
摘要： A motion vector detection method includes a step (S300) of generating a first motion vector candidate MVC1 based on a reference frame Rf1 and a second motion vector candidate MVC2 based on a reference frame Rf2, steps (S302, S304) of generating an interpolation prediction block PB0 by interpolating pixel values according to the prediction block PB1 indicated by the first motion vector candidate MVC1 and a prediction block PB2 indicated by the second motion vector candidate MVC2, steps (S306 to S310) of calculating a prediction error evaluating value based on the difference between pixel values of the interpolation prediction block PB0 and the block to be encoded, and steps (S312, S314) of detecting the first and the second motion vector candidates MVC1, MVC2 making the prediction error evaluation value minimum as the motion vector MV1 and motion vector MV2 of the block to be encoded.
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公开(公告)号：EP1445960A4
公开(公告)日：2005-07-13
申请号：EP02780003
申请日：2002-11-06
发明人： KONDO SATOSHI , KADONO SHINYA , HAGAI MAKOTO
IPC分类号： H04N19/577 , G06T9/00 , H04N19/103 , H04N7/32
CPC分类号： H04N19/00 , H04N19/103 , H04N19/105 , H04N19/107 , H04N19/127 , H04N19/136 , H04N19/137 , H04N19/157 , H04N19/159 , H04N19/16 , H04N19/172 , H04N19/176 , H04N19/423 , H04N19/43 , H04N19/44 , H04N19/46 , H04N19/50 , H04N19/51 , H04N19/573 , H04N19/577 , H04N19/58 , H04N19/61 , H04N19/70
摘要： A moving picture coding apparatus 70 for performing inter-picture prediction coding on a picture constituting a moving picture includes a coding unit 103 for performing prediction error coding on image data, a decoding unit 105 for performing prediction error decoding on the output of the coding unit, a reference picture memory 117 for storing output data from the decoding unit, and a motion vector detector 108 for detecting a motion vector according to the decoded image data stored in the memory. When coding a B picture as a coding object picture, information indicating whether the coding object picture is used as a reference picture upon coding of another picture is added as header information. In a decoding apparatus for decoding a code string Bs output from the moving picture coding apparatus 70, it is possible to simplify management of a memory for storing reference pictures according to the aforementioned header information.
摘要翻译： 根据本发明，用于对构成运动图像的图像执行画面间预测编码的运动图像编码装置（70）设置有用于执行图像数据的预测误差编码的编码单元（103） 解码单元，用于对来自编码单元的输出执行预测误差解码; 用于保存来自解码单元（105）的输出数据的参考图像存储器（117）。 以及用于基于存储在存储器中的解码图像数据来检测运动矢量的运动矢量检测单元（108）。 当将B图像编码为目标图像时，作为标题信息添加指示在编码另一图像时是否应当将目标图像用作参考图像的信息。 因此，在从运动图像编码装置（70）输出的比特流Bs进行解码的解码装置中，能够基于标题信息来容易地管理保存参考图像的存储器。
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公开(公告)号：EP1530374A4
公开(公告)日：2007-10-10
申请号：EP03741520
申请日：2003-07-22
发明人： ABE KIYOFUMI , KADONO SHINYA , KONDO SATOSHI , HAGAI MAKOTO
CPC分类号： H04N19/105 , H04N19/103 , H04N19/117 , H04N19/134 , H04N19/137 , H04N19/139 , H04N19/147 , H04N19/159 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/177 , H04N19/18 , H04N19/182 , H04N19/42 , H04N19/46 , H04N19/573 , H04N19/577 , H04N19/58 , H04N19/593 , H04N19/61 , H04N19/70
摘要： According to a picture coding method of the present invention, a coded picture identified by a picture number is stored, as a reference picture, into a storage unit; commands indicating correspondence between picture numbers and reference indices for designating reference pictures and coefficients used for generation of predictive images are generated; a reference picture being used when motion compensation is performed on a current block in a current picture to be coded is designated by a reference index; a predictive image is generated by performing linear prediction on a block being obtained by motion estimation within the designated reference picture, by use of a coefficient corresponding to the reference index; a coded image signal including a coded signal obtained by coding a prediction error being a difference between the current block in the current picture to be coded and the predictive image, the commands, the reference index and the coefficient is outputted. At that time, information indicating the maximum reference index value is coded and included into the coded image signal, and the commands indicating correspondence between at least one picture number and a plurality of reference indices are generated.
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8.发明公开VARIABLE LENGTH ENCODING METHOD, VARIABLE LENGTH DECODING METHOD, STORAGE MEDIUM, VARIABLE LENGTH ENCODING DEVICE, VARIABLE LENGTH DECODING DEVICE, AND BIT STREAM 有权方法的可变长度编码，METHOD FOR解码变长的，存储装置中，DEVICE FOR可变长度编码，DEVICE FOR解码长度可变STREAM
公开(公告)号：EP1445869A4
公开(公告)日：2007-03-14
申请号：EP03710347
申请日：2003-03-13
发明人： KADONO SHINYA , MATSUI YOSHINORI , KONDO SATOSHI
CPC分类号： H03M7/4006 , H03M7/42 , H04N19/46 , H04N19/70 , H04N19/91
摘要： It is possible to correctly decode data which has been encoded by a variable length encoding method in which the compression ratio is increased. The variable length encoding method encodes a predetermined unit of data by referencing a parameter table and includes: an initialization step for setting an acquired parameter table to a initial value; a parameter table information encoding step for encoding information on the parameter table which has been initialized; a parameter acquisition step for acquiring from the parameter table an encoding parameter used for encoding each sub-data constituting the predetermined unit of data; a sub-data encoding step for variable-length-encoding the sub-data by referencing the acquired encoding parameter; and an information encoding data arrangement step for arranging the encoded information at a position where the information can be acquired prior to the encoded predetermined unit of data and outputting it.
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公开(公告)号：EP1083705A4
公开(公告)日：2007-01-10
申请号：EP99921269
申请日：1999-05-25
发明人： MURAKI KENJI , KONDO SATOSHI , YAMADA JIRO , AYAKI YASUSHI
CPC分类号： H04L12/40058
摘要： A signal data receiver for receiving at least data through a digital interface, characterized in that the receiver has receiving terminal data holding means for holding data concerning the status of the terminal which receives data, the data concerning the status of the terminal includes terminal operation mode information, reasons for holding included in the operation mode information are classified according to at least the reception data status and the device operation status, and the classification categories and reasons belonging to the categories are displayed on another device connected to the digital interface.
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公开(公告)号：EP1381238A4
公开(公告)日：2006-07-05
申请号：EP03746442
申请日：2003-04-10
发明人： KADONO SHINYA , KONDO SATOSHI , HAGAI MAKOTO , ABE KIYOFUMI
IPC分类号： H04N19/127 , G06T9/00 , H04N19/159 , H04N19/172 , H04N19/423 , H04N19/50 , H04N19/503 , H04N19/577 , H04N19/58 , H04N19/65 , H04N19/70 , H04N19/89 , H04N19/91 , H04N7/32
CPC分类号： H04N19/127 , H04N19/159 , H04N19/172 , H04N19/174 , H04N19/423 , H04N19/46 , H04N19/573 , H04N19/58 , H04N19/61 , H04N19/70 , H04N19/89
摘要： An image encoding method includes a step (Step 100) for encoding an image, a step (Step 102) for judging whether an unnecessary memory is present, a step (Step 103) for encoding memory management information to release an unnecessary memory if any, a step (Step 104) for releasing the unnecessary memory, a step (Step 105) for judging whether the memory management information to release an unnecessary memory has been encoded by the encoding of the image immediately before, and a step (Step 106) for again encoding the memory management information for releasing the unnecessary memory if the memory management information has been encoded.
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