Video coding method and apparatus
    14.
    发明申请
    Video coding method and apparatus 审中-公开
    视频编码方法及装置

    公开(公告)号:US20060088096A1

    公开(公告)日:2006-04-27

    申请号:US11254763

    申请日:2005-10-21

    摘要: A method and apparatus are provided for improving compression efficiency or picture quality by selecting a wavelet transform technique suitable to input video/image scene characteristics in video/image compression. The video encoder includes a temporal transform module that removes temporal redundancy of an input frame and generates a residual frame, a selection module that selects an appropriate wavelet filter among a plurality of wavelet filters having different taps according to a spatial correlation of the residual frame, a wavelet transform module that generates wavelet coefficients by performing wavelet transform on the residual frame using the selected wavelet filter, and a quantization module that quantizes the wavelet coefficients.

    摘要翻译: 提供一种通过选择适合于在视频/图像压缩中输入视频/图像场景特性的小波变换技术来提高压缩效率或图像质量的方法和装置。 视频编码器包括时间变换模块,其消除输入帧的时间冗余并产生残余帧;选择模块,其根据残差帧的空间相关性在具有不同抽头的多个小波滤波器中选择适当的小波滤波器; 小波变换模块,通过使用选择的小波滤波器对残差帧进行小波变换来生成小波系数;量化模块,其量化小波系数。

    Scalable video coding and decoding methods, and scalable video encoder and decoder
    17.
    发明申请
    Scalable video coding and decoding methods, and scalable video encoder and decoder 审中-公开
    可扩展的视频编码和解码方法,以及可扩展的视频编码器和解码器

    公开(公告)号:US20050047509A1

    公开(公告)日:2005-03-03

    申请号:US10925013

    申请日:2004-08-25

    IPC分类号: H04N7/32 H04N7/12 H04N7/26

    摘要: Scalable video coding and decoding methods, a scalable video encoder, and a scalable video decoder. The scalable video coding method includes receiving a GOP, performing temporal filtering and spatial transformation thereon, quantizing and generating a bitstream. The scalable video encoder for performing the scalable video coding method includes a weight determination block which determines a weight for scaling. The scalable video decoding method includes dequantizing the coded image information obtained from a received bitstream, performing descaling, inverse spatial transformation, and inverse temporal filtering on the scaled transform coefficients, thereby recovering video frames. The scalable video decoder for performing the scalable video decoding method includes an inverse weighting block. The standard deviation of Peak Signal to Noise Ratios (PSNRs) of frames included in a group of pictures (GOP) is reduced so that video coding performance can be increased.

    摘要翻译: 可扩展视频编码和解码方法,可分级视频编码器和可伸缩视频解码器。 可分级视频编码方法包括接收GOP,对其进行时间滤波和空间变换,量化和生成比特流。 用于执行可伸缩视频编码方法的可分级视频编码器包括确定缩放权重的权重确定块。 可分级视频解码方法包括对从接收到的比特流获得的编码图像信息进行去量化,对经缩放的变换系数执行除鳞,逆空间变换和逆时间滤波,从而恢复视频帧。 用于执行可分级视频解码方法的可分级视频解码器包括反向加权块。 降低包括在一组图像(GOP)中的帧的峰值信号与噪声比(PSNR)的标准偏差,从而可以增加视频编码性能。

    Video coding apparatus and method for inserting key frame adaptively
    19.
    发明申请
    Video coding apparatus and method for inserting key frame adaptively 审中-公开
    适用于插入关键帧的视频编码装置及方法

    公开(公告)号:US20050169371A1

    公开(公告)日:2005-08-04

    申请号:US11043185

    申请日:2005-01-27

    摘要: A method of adaptively inserting a key frame according to video content to allow a user to easily access a desired scene. A video encoder includes a coding mode determination unit receiving a temporal residual frame with respect to an original frame, determining whether the original frame has a scene change by comparing the temporal residual frame with a predetermined reference, determining to encode the temporal residual frame when it is determined that the original frame does not have the scene change, and determining to encode the original frame when it is determined that the original frame has the scene change, and a spatial transformer performing spatial transform on either of the temporal residual frame and the original frame according to the determination of the coding mode determination unit and obtaining a transform coefficient. A keyframe is inserted according to access to a scene based on the content of an image, so that usability of a function allowing access to a random image frame is increased.

    摘要翻译: 一种根据视频内容自适应地插入关键帧以允许用户容易地访问期望的场景的方法。 视频编码器包括编码模式确定单元,其接收相对于原始帧的时间残差帧,通过将时间残差帧与预定参考进行比较来确定原始帧是否具有场景变化;确定当时间残差帧 确定原始帧不具有场景变化,并且当确定原始帧具有场景变化时确定对原始帧进行编码,以及空间变换器对时间残差帧和原始帧中的任一帧执行空间变换 根据编码模式确定单元的确定获得变换系数。 根据对图像的内容的访问来插入关键帧,从而增加允许访问随机图像帧的功能的可用性。

    Method and apparatus of processing data independently and synchronizing and outputting processed data
    20.
    发明授权
    Method and apparatus of processing data independently and synchronizing and outputting processed data 有权
    独立处理数据并同步并输出处理后的数据的方法和装置

    公开(公告)号:US08245071B2

    公开(公告)日:2012-08-14

    申请号:US12199289

    申请日:2008-08-27

    摘要: Provided are a method and apparatus for controlling a plurality of data processing modules that process data independently and output the processed data. A method of controlling a first data processing module and a second data processing module that process data independently and synchronize and output the processed data, the method including acquiring first data output rate information representing a current data output rate of the first data processing module, acquiring second data output rate information representing a current data output rate of the second data processing module, and adjusting a data output rate of at least one of the first data processing module and the second data processing module, on the basis of the first data output rate information and the second data output rate information.

    摘要翻译: 提供一种用于控制独立处理数据并输出处理的数据的多个数据处理模块的方法和装置。 一种控制第一数据处理模块和第二数据处理模块的方法,所述第一数据处理模块和第二数据处理模块独立地处理数据并同步并输出处理后的数据,该方法包括: 第二数据输出速率信息,表示第二数据处理模块的当前数据输出速率,并且基于第一数据输出速率调整第一数据处理模块和第二数据处理模块中的至少一个的数据输出速率 信息和第二数据输出速率信息。