公开(公告)号：US06754269B1

公开(公告)日：2004-06-22

申请号：US09634550

申请日：2000-08-08

Applicant: Noboru Yamaguchi ,  Toshiaki Watanabe ,  Takashi Ida ,  Yoshihiro Kikuchi

Inventor： Noboru Yamaguchi ,  Toshiaki Watanabe ,  Takashi Ida ,  Yoshihiro Kikuchi

IPC: H04N712

CPC classification number: H04N19/59 ,  H04N19/20

Abstract: An alpha-map encoding apparatus includes a first down-sampling circuit (21) for down-sampling an alpha-map signal which represents the shape of an object and the position in the frame of the object at a down-sampling ratio based on size conversion ratio information, an up-sampling circuit (23) for up-sampling the alpha-map signal at an up-sampling ratio based on size conversion ratio information given to restore the down-sampled alpha-map signal to an original size, and outputting a local decoded alpha-map signal, a motion estimation/compensation circuit (25) for generating a motion estimation/compensation signal on the basis of the previous decoded video signal and a motion vector signal, a second down-sampling circuit (26) for down-sampling the motion estimation/compensation signal at the down-sampling ratio, a binary image encoder for encoding the alpha-map signal down-sampled by the first down-sampling circuit to a binary image in accordance with the motion estimation/compensation signal down-sampled by the second down-sampling circuit, and outputting an encoded binary image signal, and a multiplexer for multiplexing and outputting the encoded binary image signal and the up-sampling ratio information.

公开(公告)号：US06643404B2

公开(公告)日：2003-11-04

申请号：US10100005

申请日：2002-03-19

Applicant: Takeshi Nagai ,  Kenshi Dachiku ,  Takeshi Chujoh ,  Yoshihiro Kikuchi ,  Toshiaki Watanabe

Inventor： Takeshi Nagai ,  Kenshi Dachiku ,  Takeshi Chujoh ,  Yoshihiro Kikuchi ,  Toshiaki Watanabe

IPC: G06K936

CPC classification number: H04N19/61 ,  H04N19/46

Abstract: An input image signal is coded by an encoder to be outputted as a basic code string, and the basic code string is delayed by a code-string delay circuit for a predetermined period of time to be outputted as an additional code string. The basic code string is synthesized with the additional code string by a code-string synthesizer to be outputted as an output code string. Thus, there is provided an image data coding system which can quickly restore data even if the data is lost due to error and in which the increased code amount is less than the cycle refresh and the error correction.

公开(公告)号：US06643403B2

公开(公告)日：2003-11-04

申请号：US10100004

申请日：2002-03-19

Applicant: Takeshi Nagai ,  Kenshi Dachiku ,  Takeshi Chujoh ,  Yoshihiro Kikuchi ,  Toshiaki Watanabe

Inventor： Takeshi Nagai ,  Kenshi Dachiku ,  Takeshi Chujoh ,  Yoshihiro Kikuchi ,  Toshiaki Watanabe

IPC: G06K936

CPC classification number: H04N19/61 ,  H04N19/46

Abstract: An input image signal is coded by an encoder to be outputted as a basic code string, and the basic code string is delayed by a code-string delay circuit for a predetermined period of time to be outputted as an additional code string. The basic code string is synthesized with the additional code string by a code-string synthesizer to be outputted as an output code string. Thus, there is provided an image data coding system which can quickly restore data even if the data is lost due to error and in which the increased code amount is less than the cycle refresh and the error correction.

公开(公告)号：US06519285B2

公开(公告)日：2003-02-11

申请号：US09783549

申请日：2001-02-15

Applicant: Noboru Yamaguchi ,  Toshiaki Watanabe ,  Takashi Ida

Inventor： Noboru Yamaguchi ,  Toshiaki Watanabe ,  Takashi Ida

IPC: H04N732

CPC classification number: G06T3/40 ,  G06T3/4084 ,  H04N19/124 ,  H04N19/129 ,  H04N19/132 ,  H04N19/146 ,  H04N19/152 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/187 ,  H04N19/196 ,  H04N19/30 ,  H04N19/36 ,  H04N19/46 ,  H04N19/48 ,  H04N19/61 ,  H04N19/619

Abstract: An encoding apparatus includes an encoder for encoding an alpha-map signal for discriminating a background from an object of an input picture in motion compensation prediction (MV)+transform encoding which uses MV in a domain of each of N×N transform coefficients (n), a transform circuit for transforming Pf into n in accordance with the alpha-map signal, an inverse transform circuit for reconstructing Pf by inversely transforming n in accordance with the alpha-map signal, a selector for obtaining a motion compensation prediction value (p) in the mth layer (m=2 to M) by switching p in the mth layer and p in the (m−1)th layer for each n, the selector selecting p in the mth layer for n by which a quantized output (Q) in the (m−1)th layer is 0 and selecting p in the (m−1)th layer for n by which Q=1 or more, an adder for calculating a difference df between a prediction error signal in the mth layer and a dequantized output in the (m−1)th layer, and an encoder for encoding and outputting the quantized signal of df. This encoding apparatus realizes SNR scalability in M layers.

Abstract translation: 编码装置包括编码器，用于对运动补偿预测（MV）+变换编码中的每个N×N变换系数（n）的MV使用的MV进行编码，用于区分来自输入图像的对象的背景的阿尔法 - 用于根据阿尔法 - 映射信号将Pf变换为n的变换电路，用于通过根据阿尔法 - 映射信号逆变换n来重建Pf的逆变换电路，用于获得运动补偿预测值（p）的选择器 通过在第m层切换第m层（m = 2至M），并且对于每个n，在第（m-1）层中选择p，选择器选择在第m层中的n，其中量化输出（Q） 在第（m-1）层为0并且在第（m-1）层中选择p为Q = 1以上的n的加法器，用于计算第m层中的预测误差信号与 第（m-1）层中的去量化输出和用于编码和输出的编码器 df的量化信号。 该编码装置实现M层中的SNR可伸缩性。

公开(公告)号：US06317461B1

公开(公告)日：2001-11-13

申请号：US09476117

申请日：2000-01-03

Applicant: Takeshi Chujoh ,  Toshiaki Watanabe ,  Yoshihiro Kikuchi ,  Takeshi Nagai

Inventor： Takeshi Chujoh ,  Toshiaki Watanabe ,  Yoshihiro Kikuchi ,  Takeshi Nagai

IPC: H04N718

CPC classification number: H04N19/69 ,  H04N19/152 ,  H04N19/159 ,  H04N19/176 ,  H04N19/187 ,  H04N19/37 ,  H04N19/46 ,  H04N19/52 ,  H04N19/61 ,  H04N19/65 ,  H04N19/66 ,  H04N19/70 ,  H04N19/89 ,  H04N19/93

Abstract: A coding and/or decoding system includes: a code-word table for storing therein a plurality of code words, which are capable of being decoded both in forward and backward directions and which are formed so that delimiters of the code words are capable of being identified by a predetermined weight of the code words, so that the code words correspond to different source symbols; an encoder for selecting code words corresponding to inputted source symbols from the code-word table; and a synchronization interval setting part for preparing coded data every predetermined interval using the code words selected by the encoder and for inserting stuffing codes capable of being decoded in the backward direction. Thus, it is possible to decrease useless bit patterns to enhance the coding efficiency by smaller amounts of calculation and storage, and to decode variable length codes both in the forward and backward directions even if the synchronization interval is set every interval using the stuffing bits.

Abstract translation: 编码和/或解码系统包括：码字表，用于在其中存储多个码字，其能够在前向和后向被解码，并且形成为使得码字的分隔符能够被 由代码字的预定权重识别，使得码字对应于不同的源符号; 编码器，用于从码字表中选择与输入的源符号对应的码字; 以及同步间隔设定部分，用于使用由编码器选择的代码字，每隔预定间隔准备编码数据，并用于插入能够沿向后方向解码的填充码。 因此，可以减少无用的位模式，通过更少的计算和存储量来提高编码效率，并且即使在使用填充位的每个间隔设置同步间隔的情况下，也可以在正向和反向方向上解码可变长度代码。

公开(公告)号：US06256064B1

公开(公告)日：2001-07-03

申请号：US09476116

申请日：2000-01-03

Applicant: Takeshi Chujoh ,  Toshiaki Watanabe ,  Yoshihiro Kikuchi ,  Takeshi Nagai

Inventor： Takeshi Chujoh ,  Toshiaki Watanabe ,  Yoshihiro Kikuchi ,  Takeshi Nagai

IPC: H07N0718

CPC classification number: H04N19/69 ,  H04N19/152 ,  H04N19/159 ,  H04N19/176 ,  H04N19/187 ,  H04N19/37 ,  H04N19/46 ,  H04N19/52 ,  H04N19/61 ,  H04N19/65 ,  H04N19/66 ,  H04N19/70 ,  H04N19/89 ,  H04N19/93

Abstract: A coding and/or decoding system includes: a code-word table for storing therein a plurality of code words, which are capable of being decoded both in forward and backward directions and which are formed so that delimiters of the code words are capable of being identified by a predetermined weight of the code words, so that the code words correspond to different source symbols; an encoder for selecting code words corresponding to inputted source symbols from the code-word table; and a synchronization interval setting part for preparing coded data every predetermined interval using the code words selected by the encoder and for inserting stuffing codes capable of being decoded in the backward direction. Thus, it is possible to decrease useless bit patterns to enhance the coding efficiency by smaller amounts of calculation and storage, and to decode variable length codes both in the forward and backward directions even if the synchronization interval is set every interval using the stuffing bits.

公开(公告)号：US06198768B1

公开(公告)日：2001-03-06

申请号：US09543775

申请日：2000-04-05

Applicant: Noboru Yamaguchi ,  Toshiaki Watanabe ,  Takashi Ida ,  Yoshihiro Kikuchi

Inventor： Noboru Yamaguchi ,  Toshiaki Watanabe ,  Takashi Ida ,  Yoshihiro Kikuchi

IPC: H04N712

CPC classification number: H04N19/59 ,  H04N19/20

Abstract: An alpha-map encoding apparatus includes a first down-sampling circuit (21) for down-sampling an alpha-map signal which represents the shape of an object and the position in the frame of the object at a down-sampling ratio based on size conversion ratio information, an up-sampling circuit (23) for up-sampling the alpha-map signal at an up-sampling ratio based on size conversion ratio information given to restore the down-sampled alpha-map signal to an original size, and outputting a local decoded alpha-map signal, a motion estimation/compensation circuit (25) for generating a motion estimation/compensation signal on the basis of the previous decoded video signal and a motion vector signal, a second down-sampling circuit (26) for down-sampling the motion estimation/compensation signal at the down-sampling ratio, a binary image encoder for encoding the alpha-map signal down-sampled by the first down-sampling circuit to a binary image in accordance with the motion estimation/compensation signal down-sampled by the second down-sampling circuit, and outputting an encoded binary image signal, and a multiplexer for multiplexing and outputting the encoded binary image signal and the up-sampling ratio information.

公开(公告)号：US6128342A

公开(公告)日：2000-10-03

申请号：US223780

申请日：1998-12-31

Applicant: Yoshihiro Kikuchi ,  Toshiaki Watanabe ,  Kenshi Dachiku ,  Takashi Ida ,  Noboru Yamaguchi ,  Takeshi Chujoh

Inventor： Yoshihiro Kikuchi ,  Toshiaki Watanabe ,  Kenshi Dachiku ,  Takashi Ida ,  Noboru Yamaguchi ,  Takeshi Chujoh

IPC: G06T9/00 ,  H04N7/26 ,  H04N7/36 ,  H04N7/50 ,  H04N7/52 ,  H04N7/12

CPC classification number: H04N7/52 ,  H04N19/00 ,  H04N19/51 ,  H04N19/517 ,  H04N19/543 ,  H04N19/61 ,  H04N19/107 ,  H04N19/20 ,  H04N19/30 ,  H04N19/70

Abstract: A video coding/decoding apparatus comprises a prediction circuit that divides an input video signal into large regions and small regions in a hierarchical fashion and produces a prediction signal by performing prediction region by region, a subtracter for generating a prediction error signal for a prediction signal at the lowest level, a DCT circuit for coding a prediction error signal, a quantization circuit and a variable-length encoder, a variable-length encoder for coding the prediction mode and motion vector information obtained at each level from the prediction circuit, and a multiplexer for multiplexing the code strings obtained from the variable-length encoder and dividing them into the upper-layer and lower-layer code strings to output the code strings obtained at the variable-length encoder particularly as upper-layer code strings.

Abstract translation: 视频编码/解码装置包括：预测电路，以分层方式将输入视频信号分割为大区域和小区域，并通过逐区域进行预测产生预测信号;减法器，用于产生用于预测信号的预测误差信号 在最低级别，用于编码预测误差信号的DCT电路，量化电路和可变长度编码器，用于编码从预测电路获得的每个级别的预测模式和运动矢量信息的可变长度编码器，以及 多路复用器，用于多路复用从可变长度编码器获得的代码串，并将其分成上层和下层代码串，以输出在可变长度编码器处获得的代码串，特别是作为上层代码串。

公开(公告)号：US6122318A

公开(公告)日：2000-09-19

申请号：US91362

申请日：1998-06-19

Applicant: Noboru Yamaguchi ,  Toshiaki Watanabe ,  Takashi Ida ,  Yoshihiro Kikuchi

Inventor： Noboru Yamaguchi ,  Toshiaki Watanabe ,  Takashi Ida ,  Yoshihiro Kikuchi

IPC: H04N19/50 ,  G06T3/40 ,  G06T9/00 ,  H03M7/36 ,  H03M7/42 ,  H04N19/107 ,  H04N19/13 ,  H04N19/134 ,  H04N19/136 ,  H04N19/14 ,  H04N19/166 ,  H04N19/167 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/20 ,  H04N19/423 ,  H04N19/46 ,  H04N19/463 ,  H04N19/503 ,  H04N19/51 ,  H04N19/517 ,  H04N19/52 ,  H04N19/59 ,  H04N19/60 ,  H04N19/61 ,  H04N19/65 ,  H04N19/68 ,  H04N19/70 ,  H04N19/80 ,  H04N19/85 ,  H04N19/91 ,  H04N7/12

CPC classification number: H04N19/59 ,  H04N19/20

Abstract: An alpha-map encoding apparatus includes a first down-sampling circuit for down-sampling an alpha-map signal which represents the shape of an object and the position in the frame of the object at a down-sampling ratio based on size conversion ratio information, an up-sampling circuit for up-sampling the alpha-map signal at an up-sampling ratio based on size conversion ratio information given to restore the down-sampled alpha-map signal to an original size, and outputting a local decoded alpha-map signal, a motion estimation/compensation circuit for generating a motion estimation/compensation signal on the basis of the previous decoded video signal and a motion vector signal, a second down-sampling circuit for down-sampling the motion estimation/compensation signal at the down-sampling ratio, a binary image encoder for encoding the alpha-map signal down-sampled by the first down-sampling circuit to a binary image in accordance with the motion estimation/compensation signal down-sampled by the second down-sampling circuit, and outputting an encoded binary image signal, and a multiplexer for multiplexing and outputting the encoded binary image signal and the up-sampling ratio information.

Abstract translation: PCT No.PCT / JP97 / 03976 Sec。 371日期：1998年6月19日 102（e）1998年6月19日PCT PCT 1997年10月31日PCT公布。 WO98 / 19462 PCT公开号 日期1998年5月7日阿尔法 - 地图编码装置包括：第一下采样电路，用于以基于下采样比的方式对表示对象的形状和对象的帧中的位置的阿尔法 - 映射信号进行下采样 尺寸转换比信息，上采样电路，用于根据给定的大小转换比率信息以上取样比对上述采样α信号进行采样，以将下采样的阿尔法 - 映射信号恢复到原始大小，并输出 局部解码的阿尔法 - 映射信号，用于基于先前解码的视频信号和运动矢量信号产生运动估计/补偿信号的运动估计/补偿电路，用于对运动估计/补偿信号进行下采样的第二下采样电路， 补偿信号，用于根据运动估计/补偿符号将由第一下采样电路下采样的阿尔法 - 映射信号编码为二进制图像的二进制图像编码器 通过第二下采样电路进行下采样，并输出编码的二进制图像信号，以及多路复用器，用于复用并输出编码的二进制图像信号和上采样比信息。

公开(公告)号：US5912706A

公开(公告)日：1999-06-15

申请号：US916006

申请日：1997-08-21

Applicant: Yoshihiro Kikuchi ,  Toshiaki Watanabe ,  Kenshi Dachiku ,  Takashi Ida ,  Noboru Yamaguchi ,  Takeshi Chujoh

Inventor： Yoshihiro Kikuchi ,  Toshiaki Watanabe ,  Kenshi Dachiku ,  Takashi Ida ,  Noboru Yamaguchi ,  Takeshi Chujoh

IPC: G06T9/00 ,  H04N7/26 ,  H04N7/36 ,  H04N7/50 ,  H04N7/52 ,  H04N7/32

CPC classification number: H04N7/52 ,  H04N19/00 ,  H04N19/51 ,  H04N19/517 ,  H04N19/543 ,  H04N19/61 ,  H04N19/107 ,  H04N19/20 ,  H04N19/30 ,  H04N19/70

Abstract: A video coding/decoding apparatus comprises a prediction circuit that divides an input video signal into large regions and small regions in a hierarchical fashion and produces a prediction signal by performing prediction region by region, a subtracter for generating a prediction error signal for a prediction signal at the lowest level, a DCT circuit for coding a prediction error signal, a quantization circuit and a variable-length encoder, a variable-length encoder for coding the prediction mode and motion vector information obtained at each level from the prediction circuit, and a multiplexer for multiplexing the code strings obtained from the variable-length encoder and dividing them into the upper-layer and lower-layer code strings to output the code strings obtained at the variable-length encoder particularly as upper-layer code strings.

Abstract translation: 视频编码/解码装置包括：预测电路，以分层方式将输入视频信号分割为大区域和小区域，并通过逐区域进行预测产生预测信号;减法器，用于产生用于预测信号的预测误差信号 在最低级别，用于编码预测误差信号的DCT电路，量化电路和可变长度编码器，用于编码从预测电路获得的每个级别的预测模式和运动矢量信息的可变长度编码器，以及 多路复用器，用于多路复用从可变长度编码器获得的代码串，并将其分成上层和下层代码串，以输出在可变长度编码器处获得的代码串，特别是作为上层代码串。