METHOD AND APPARATUS FOR ENCODING GROUPS OF PICTURES OF A VIDEO SEQUENCE, EACH OF SAID GROUPS INCLUDING AN INTRA ENCODED PICTURE AND MORE THAN TWO PREDICTED ENCODED PICTURES

摘要

well-known video coding standard has basically three types, namely I, P and B pictures are there. Video sequences are coded as a general picture of the group (GOP _i ) structure, a plurality of P or B-picture is coded in one of the following I picture. However, the GOP structure has several disadvantages with respect to error recovery and storage media recording. If the P picture is, for example, that is lost due to a transmission channel error, the next P-picture can not be restored exactly, such error is temporarily continue to cause some objectionable artifacts. The GOP structure may be designed only for the forward play, reverse play complicates the operation. According to the invention, the reversible GOP structure is used for the video encoding and decoding. The RGOP structure includes both forward and backward encoded chain encoding chain. Each picture is in the structure and assigned RGOP only one of these chains, the video pictures are interleaved RGOP of adjacent chain.