Image decoding device for decoding a hierarchically coded image
    1.
    发明授权
    Image decoding device for decoding a hierarchically coded image 失效
    用于解码分层编码图像的图像解码装置

    公开(公告)号:US06813314B2

    公开(公告)日:2004-11-02

    申请号:US09875098

    申请日:2001-06-07

    IPC分类号: H04N712

    摘要: A video coding device capable of adaptively processing input video data according to property of the data and realizing effective progressive transmission of the coded data even if image components are different in size and/or different in the number of subbands. The above-mentioned object can be realized by the provision of a transferring-order deciding and ranging portion that can prepare an integrated component unit by forming combinations of subband-based frequency-coefficients of respective components Y, U and V and can change the number of respective elements of respective components Y, U and V.

    摘要翻译: 一种视频编码装置,其能够根据数据的属性自适应地处理输入视频数据,并且即使图像分量的大小和/或子带数量不同,也可实现编码数据的有效逐行传输。 上述目的可以通过提供可以通过形成各个分量Y,U和V的基于子带的频率系数的组合来准备集成分量单元的转移阶决定和测距部分来实现,并且可以改变数量 各组分Y,U和V的各元素。

    Video coding and decoding device for rearranging the luminance and chrominance components into subband images
    3.
    发明授权
    Video coding and decoding device for rearranging the luminance and chrominance components into subband images 有权
    用于将亮度和色度分量重新排列成子带图像的视频编码和解码装置

    公开(公告)号:US06259735B1

    公开(公告)日:2001-07-10

    申请号:US09381029

    申请日:1999-09-15

    IPC分类号: H04N1102

    摘要: A video coding device capable of adaptively processing input video data according to property of the data and realizing effective progressive transmission of the coded data even if image components arc different in size and/or different in the number of subbands. The above-mentioned object can be realized by the provision of a transferring-order deciding and ranging portion (104) that can prepare an integrated component unit by forming combinations of subband-based frequency-coefficients of respective components Y, U and V and can change the number of respective elements of respective components Y, U and V.

    摘要翻译: 一种视频编码装置,其能够根据数据的属性自适应地处理输入视频数据,并且即使图像分量的尺寸不同和/或子带数量不同,也可实现编码数据的有效逐行传输。 上述目的可以通过提供一种可以通过形成各个分量Y,U和V的基于子带的频率系数的组合来准备集成分量单元的传送阶决定和测距部分(104)来实现,并且可以 改变各成分Y,U,V的各元素数。

    Image encoder and image decoder
    7.
    发明授权
    Image encoder and image decoder 失效
    图像编码器和图像解码器

    公开(公告)号:US06956974B1

    公开(公告)日:2005-10-18

    申请号:US09508813

    申请日:1998-09-03

    摘要: An image encoder/decoder by which a partial image is encoded easily with a resolution meeting the user's demand, wherein the encoded amount of data is not increased and a necessary capacity of memory can be reduced. The image encoder has a tile decomposition portion which divides image data into tiles of N pixels×M pixels, a wavelet transform coding portion which extrapolates predetermined data at the peripheries of the tiles outputted from the tile decomposition portion and performs subdivision to perform wavelet encoding. A management information generating portion generates information for managing the encoded data in order that the encoded data outputted from the wavelet transform coding portion can be decoded for each tile and for each subband of the wavelet encoding. Also, a coded data integration portion links the encoded data encoded by wavelet encoding for each tile by using the output of the management information generating portion and adds the managing information to the encoded data.

    摘要翻译: 一种图像编码器/解码器,通过该图像编码器/解码器以满足用户需求的分辨率容易地编码部分图像,其中编码的数据量不增加,并且可以减少必要的存储容量。 图像编码器具有将图像数据分割成N像素×M像素的片的瓦片分解部,小波变换编码部,其在从瓦片分解部输出的瓦片的周边外推外部的预定数据,并进行细分以进行小波编码。 管理信息生成部分生成用于管理编码数据的信息,以便可以对每个瓦片和小波编码的每个子带对从小波变换编码部分输出的编码数据进行解码。 此外,编码数据合成部分通过使用管理信息生成部分的输出来链接每个片段的小波编码编码的编码数据,并将管理信息添加到编码数据。

    Motion image coding apparatus for performing hierarchical coding
    8.
    发明授权
    Motion image coding apparatus for performing hierarchical coding 有权
    用于执行分层编码的运动图像编码装置

    公开(公告)号:US06546142B2

    公开(公告)日:2003-04-08

    申请号:US09917955

    申请日:2001-07-31

    IPC分类号: G06K936

    CPC分类号: H04N19/61 H04N19/20 H04N19/30

    摘要: An image coding apparatus inputs pixel data of a part image of high resolution. An upper layer coding portion (101), a second shape data generating portion (102), and a second shape data coding portion (103) perform coding of shape data and pixel data in the upper layer. A down sampling portion (104) generates pixel data of low resolution. A lower layer coding portion (105), a first shape data generating portion (106), and a first shape data coding portion (107) code shape data and pixel data in the lower layer.

    摘要翻译: 图像编码装置输入高分辨率的部位图像的像素数据。 上层编码部分(101),第二形状数据生成部分(102)和第二形状数据编码部分(103)对上层的形状数据和像素数据执行编码。 下采样部分(104)产生低分辨率的像素数据。 下层编码部分(105),第一形状数据生成部分(106)和第一形状数据编码部分(107)对下层的形状数据和像素数据进行编码。

    Moving image coder
    9.
    发明授权
    Moving image coder 失效
    运动图像编码器

    公开(公告)号:US5856848A

    公开(公告)日:1999-01-05

    申请号:US882114

    申请日:1997-06-25

    摘要: A moving image coder has an arithmetic unit for calculating an average value of a coding object block; an arithmetic unit for obtaining an alternating current component by subtracting the average value from each of pixel values of the coding object block; an arithmetic unit for obtaining a intra frame activity amount by making a calculation of the same kind as an error calculation in a motion prediction with respect to the obtained alternating current component; and a comparator for comparing the intra frame activity amount with a predicting error amount calculated when the motion prediction is made. The inter frame coding mode or the intra frame coding mode is judged by large and small relations of the predicting error amount and the intra frame activity amount. In this moving image coder, codings of a intra frame block and a inter frame differential block are adaptively switched in a small hardware scale.

    摘要翻译: 运动图像编码器具有用于计算编码对象块的平均值的算术单元; 算术单元,用于通过从编码对象块的每个像素值中减去平均值来获得交流分量; 算术单元,用于通过在所获得的交流分量中进行与运动预测中的误差计算相同种类的计算来获得帧内活动量; 以及用于将帧内活动量与进行运动预测时计算出的预测误差量进行比较的比较器。 通过预测误差量和帧内活动量的大小关系来判断帧间编码模式或帧内编码模式。 在该运动图像编码器中,以小的硬件尺度自适应地切换帧内块和帧间差分块的编码。

    Video image coding device and video image decoding device
    10.
    发明授权
    Video image coding device and video image decoding device 有权
    视频图像编码装置和视频图像解码装置

    公开(公告)号:US06714591B1

    公开(公告)日:2004-03-30

    申请号:US09555453

    申请日:2000-05-31

    IPC分类号: H04N712

    CPC分类号: G06T9/20 H04N19/23 H04N19/30

    摘要: A moving picture coder has a first coding mode in which the entire picture is coded and a second coding mode in which a partial region of the picture is coded. Coding is so performed that the frame rate inside the partial region is higher than that outside the partial region. To perform such coding, the coder comprises a region selecting section (201) for selecting the partial region, a shape coding section (202) for coding is the shape of the partial region, a moving picture coding section (204) for coding only the values of the pixels inside the partial region according to the selected region, and a coding control section (205). A moving picture decoder decodes a picture in the second mode by superimposing decoded picture data of the partial region of the picture in the second mode on the decoded picture data of the entire picture in the first mode.

    摘要翻译: 运动图像编码器具有编码整个图像的第一编码模式和对图像的部分区域进行编码的第二编码模式。 进行编码,使得部分区域内的帧速率高于部分区域以外的帧速率。 为了执行这样的编码,编码器包括用于选择部分区域的区域选择部分(201),用于编码的形状编码部分(202)是部分区域的形状,运动图像编码部分(204)仅用于编码 根据所选区域的部分区域内的像素的值,以及编码控制部(205)。 运动图像解码器通过将处于第二模式的图像的部分区域的解码图像数据以第一模式叠加在整个图像的解码图像数据上,来解码第二模式中的图像。