公开(公告)号：WO0186960A2

公开(公告)日：2001-11-15

申请号：PCT/US0115035

申请日：2001-05-10

Applicant: PICTURETEL CORP

Inventor： QUNSHAN GU

IPC: G06T9/00 ,  H04N7/15 ,  H04N7/173 ,  H04N7/26 ,  H04N7/36 ,  H04N7/50

CPC classification number: H04N7/152 ,  H04N19/162 ,  H04N19/423 ,  H04N19/433 ,  H04N19/46 ,  H04N19/573 ,  H04N19/58 ,  H04N19/61 ,  H04N19/70

Abstract: There is provided herein a system for video encoding and decodingthat uses short-term and long-term buffers. Reconstruction of each block within an image may be performed with reference to one of the buffers, so that different portions of an image, or different images in a sequence, may be reconstructed using different buffers. There is also provided herein systems for signaling, between an encoder and a decoder, the use of the above buffers and related address information. The encoder may, for example, transmit information identifying video data as corresponding to a particular one of the buffers, and the decoder may transmit information relating to the size of the short-term and the long-term buffer. The buffer sizes may be changed during transmission of video data by including buffer allocation information in the video data. Also disclosed herein are methods and apparatuses according to the above.

Abstract translation: 这里提供了一种用于使用短期和长期缓冲器的视频编码和解码系统。 可以参照缓冲器之一来执行图像内的每个块的重建，使得可以使用不同的缓冲器重构图像的不同部分或序列中的不同图像。 还提供了用于在编码器和解码器之间进行信令的系统，使用上述缓冲器和相关的地址信息。 编码器可以例如发送识别与缓冲器中的特定缓冲器相对应的视频数据的信息，并且解码器可以发送与短期和长期缓冲器的大小有关的信息。 通过在视频数据中包括缓冲器分配信息，可以在视频数据传输期间改变缓冲器大小。 本文还公开了根据上述的方法和装置。