公开(公告)号：KR101407832B1

公开(公告)日：2014-06-18

申请号：KR1020120144177

申请日：2012-12-12

Applicant: 조선대학교산학협력단

Inventor： 변재영 ,  강희선

IPC: H04N19/89 ,  H04N19/00 ,  H04N19/895

CPC classification number: H04N19/65 ,  H04N19/105 ,  H04N19/109 ,  H04N19/139 ,  H04N19/147 ,  H04N19/172 ,  H04N19/176 ,  H04N19/513 ,  H04N19/537 ,  H04N19/573 ,  H04N19/58 ,  H04N19/895

Abstract: The present invention relates to a reference frame selection technique for an error resilience of an image codec. The reference frame selection technique uses multiple reference frames for an efficient and reliable video streaming service in an error network environment by reducing the vulnerability of error diffusion which is a problem in an existing technique, uses multiple reference frames, and is used to improve the efficiency of compression. According to the present invention, the reference frame selection technique for the error resilience of an image codec using multiple reference frames includes the following steps whereby a motion estimation is individually performed in each of the multiple reference frames in order to search reference macroblocks of a macroblock to be coded; a degree of coincidence between a reference macroblock area searched by the motion estimation and an intra-coded macroblock (MB) of a reference frame confirmed; and the motion vector (MV) of the reference macroblock which mostly coincides with the intra-coded MB of the reference frame selected from the reference macroblocks searched in each of the multiple reference frames.

Abstract translation: 本发明涉及一种用于图像编解码器的错误弹性的参考帧选择技术。 参考帧选择技术在错误网络环境中使用多个参考帧来实现有效和可靠的视频流服务，通过减少现有技术中存在的问题的误差扩散的脆弱性，使用多个参考帧，并且用于提高效率 的压缩。 根据本发明，用于使用多个参考帧的图像编解码器的错误恢复性的参考帧选择技术包括以下步骤，其中在多个参考帧中的每一个中单独执行运动估计，以便搜索宏块的参考宏块 被编码 由运动估计搜索到的参考宏块区域与确定的参考帧的帧内编码宏块（MB）之间的一致程度; 和参考宏块的运动矢量（MV），其大体上与从多个参考帧中的每一个中搜索到的参考宏块中选择的参考帧的帧内编码MB重合。