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    • 10. 发明授权
    • Apparatus and method for determining 4X4 intra luminance prediction mode
    • 用于确定4X4内部亮度预测模式的装置和方法
    • US07450640B2
    • 2008-11-11
    • US10829301
    • 2004-04-22
    • So-young KimHyeong-seok HaNam-suk Lee
    • So-young KimHyeong-seok HaNam-suk Lee
    • H04N7/18
    • H04N19/11H04N19/105H04N19/15H04N19/176
    • A method and apparatus for determining a prediction mode used for video encoding/decoding are provided. The prediction mode determination method includes: (a) grouping a plurality of predetermined prediction modes into a predetermined number of groups; (b) selecting one prediction mode for each of the groups, respectively, performing predictions for a predetermined block in the selected prediction modes, and calculating prediction errors in the selected prediction modes; and (c) performing predictions for the predetermined block in other prediction modes belonging to a group including a prediction mode with a smallest prediction error among the calculated prediction errors, calculating prediction errors in the other prediction modes, and deciding a prediction mode according to the calculated prediction errors. Therefore, it is possible to select an optimal prediction mode through lower calculation times, thereby preventing an encoder from being complicated.
    • 提供了一种用于确定用于视频编码/解码的预测模式的方法和装置。 预测模式确定方法包括:(a)将多个预定预测模式分组成预定数量的组; (b)分别为每个组选择一个预测模式,对所选择的预测模式中的预定块进行预测,并计算所选择的预测模式中的预测误差; 以及(c)对属于包括所计算的预测误差中具有最小预测误差的预测模式的组的其他预测模式中的预定块执行预测,计算其它预测模式中的预测误差,并根据 计算预测误差。 因此,可以通过较少的计算时间来选择最佳预测模式,从而防止编码器复杂化。