公开(公告)号：KR1020090041141A

公开(公告)日：2009-04-28

申请号：KR1020070106697

申请日：2007-10-23

Applicant: 한국전자통신연구원

Inventor： 신일홍 ,  최해철 ,  이경일 ,  유정주 ,  홍진우

IPC: H04N19/30 ,  G06T3/40

CPC classification number: H04N21/4302 ,  G06T3/40 ,  H04N21/234363 ,  H04N21/23439 ,  H04N21/242 ,  H04N21/2662

Abstract: A method for reducing arbitrary-ratio up-sampling operation using context of macroblock, and a method and an apparatus for encoding/decoding by using the same are provided to reduce the operation quantity of an enlargement calculation by using the information of the peripheral block in a scalable video encoding and decoding. An arbitrary macroblock is selected to successively examine a mode of each macroblock of the lower layer(S510). It is determined at least the selected macroblock or a peripheral macroblock is an intra macroblock(S520). If one of the macroblocks is the intra macrobloc, the selected macroblock is enlarged(S530). It is determined whether a mode investigation is finished for all macroblocks of the lower layer image(S540). If the adaptive enlargement process for all macroblocks is completed, the encoding of the higher layer image is performed.

Abstract translation: 提供一种使用宏块上下文来减少任意比例的上采样操作的方法，以及一种使用该宏块的上下文进行编码/解码的方法和装置，以通过使用周边块的信息来减小放大计算的操作量 一个可扩展的视频编码和解码。 选择任意宏块以连续检查下层的每个宏块的模式（S510）。 确定至少所选择的宏块或外围宏块是帧内宏块（S520）。 如果宏块之一是内部宏块，则放大所选择的宏块（S530）。 确定对于下层图像的所有宏块是否完成了模式调查（S540）。 如果所有宏块的自适应放大处理完成，则执行较高层图像的编码。