Method and apparatus for encoding/decoding color image
    25.
    发明授权
    Method and apparatus for encoding/decoding color image 有权
    彩色图像编码/解码方法和装置

    公开(公告)号:US08824562B2

    公开(公告)日:2014-09-02

    申请号:US13141184

    申请日:2009-11-27

    IPC分类号: H04N7/12 H04N7/50 H04N7/26

    摘要: The present disclosure relates to a method and an apparatus for encoding/decoding a color image or video. The video encoding apparatus encodes a luminance component block for a current block of an image, performs a selection of a color format among a plurality of color formats to encode a chrominance component block for the current block of the image according to the color format upon selection, and generates and outputs a bitstream including the encoded luminance component block, the encoded chrominance component block, and information on the selected color format. The disclosure enables an improvement in compression performance by allowing encoding and decoding one video component image in various color formats.

    摘要翻译: 本公开涉及一种用于对彩色图像或视频进行编码/解码的方法和装置。 视频编码装置对图像的当前块的亮度分量块进行编码,执行多种颜色格式之中的颜色格式的选择,以根据选择时的颜色格式对图像的当前块进行色度分量块的编码 并且生成并输出包括编码亮度分量块,编码色度分量块和关于所选颜色格式的信息的比特流。 本公开允许通过允许以各种颜色格式对一个视频分量图像进行编码和解码来提高压缩性能。

    Apparatus and method for encoding images, and apparatus and method for decoding images
    26.
    发明授权
    Apparatus and method for encoding images, and apparatus and method for decoding images 有权
    用于编码图像的装置和方法,以及用于对图像进行解码的装置和方法

    公开(公告)号:US08768083B2

    公开(公告)日:2014-07-01

    申请号:US13581206

    申请日:2011-02-25

    摘要: Image encoding/decoding apparatus and method are disclosed. The image encoding apparatus includes: a target block splitter for splitting a target block of an input image to be encoded into a plurality of subblocks according to positions of pixels; a key block encoding unit for selecting a random key block, the size of which is larger than a pixel size of at least one of the plurality of subblocks split by the target block splitter, and performing an intra-prediction or inter-prediction encoding process on the selected key block; and a non-key block encoding unit for designating the rest of the subblocks, except for the selected key block, as a non-key block, and performing a spatial prediction process on the designated non-key block by using a key block reconstructed by the key block encoding unit and values of peripheral pixels of a current block.

    摘要翻译: 公开了图像编码/解码装置和方法。 图像编码装置包括:目标块分割器,用于根据像素的位置将待编码的输入图像的目标块分割成多个子块; 键块编码单元,用于选择其尺寸大于由目标块分割器分割的多个子块中的至少一个的像素大小的随机密钥块,并且执行帧内预测或帧间预测编码处理 在选定的关键块上; 以及非密钥块编码单元,用于将除所选择的密钥块之外的其余子块指定为非密钥块,并且通过使用由所述密钥块重建的密钥块对所述指定的非密钥块执行空间预测处理, 密钥块编码单元和当前块的周边像素的值。

    METHOD AND APPARATUS FOR INTRA-PREDICTION ENCODING/DECODING
    30.
    发明申请
    METHOD AND APPARATUS FOR INTRA-PREDICTION ENCODING/DECODING 有权
    用于预测编码/解码的方法和装置

    公开(公告)号:US20120201295A1

    公开(公告)日:2012-08-09

    申请号:US13391583

    申请日:2010-08-21

    IPC分类号: H04N7/32

    CPC分类号: H04N19/11 H04N19/61 H04N19/70

    摘要: The present disclosure provides a method and apparatus for intra prediction encoding/decoding. The method includes: selecting an intra prediction mode of each block to be encoded; encoding a residual block generated through an intra prediction of the block according to the selected intra prediction mode to generate a coefficient bit; encoding a mode identifier for indicating the intra prediction mode according to the predetermined mode determination method to generate a mode bit; generating a bitstream including a mode bit field including a mode bit for one or more blocks and a coefficient bit field including a coefficient bit for the block; and including a mode bit field pointer for identifying the mode bit field in the bitstream. The present disclosure simplifies the process of selecting a prediction mode in a video compression to improve a compression speed and decreases a size of compressed data to improve the compression efficiency.

    摘要翻译: 本公开提供了一种用于帧内预测编码/解码的方法和装置。 该方法包括:选择要编码的每个块的帧内预测模式; 根据所选择的帧内预测模式对通过块的帧内预测生成的残差块进行编码,生成系数比特; 根据预定模式确定方法编码用于指示帧内预测模式的模式标识符,以生成模式比特; 生成包括包括一个或多个块的模式位的模式位字段和包括用于块的系数位的系数位字段的比特流; 并且包括用于识别比特流中的模式比特字段的模式比特字段指针。 本公开简化了在视频压缩中选择预测模式的过程,以提高压缩速度并减小压缩数据的大小以提高压缩效率。