Invention Application
US20060133498A1 Method and apparatus for deriving motion vectors of macroblocks from motion vectors of pictures of base layer when encoding/decoding video signal
审中-公开
用于在对视频信号进行编码/解码时从基本层的图像的运动矢量导出宏块的运动矢量的方法和装置
- Patent Title: Method and apparatus for deriving motion vectors of macroblocks from motion vectors of pictures of base layer when encoding/decoding video signal
- Patent Title (中): 用于在对视频信号进行编码/解码时从基本层的图像的运动矢量导出宏块的运动矢量的方法和装置
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Application No.: US11288219Application Date: 2005-11-29
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Publication No.: US20060133498A1Publication Date: 2006-06-22
- Inventor: Seung Park , Ji Park , Byeong Jeon
- Applicant: Seung Park , Ji Park , Byeong Jeon
- Priority: KR10-2005-0026792 20050330; KR10-2005-0026782 20050330
- Main IPC: H04N11/02
- IPC: H04N11/02 ; H04B1/66 ; H04N7/12 ; H04N11/04
Abstract:
A method and apparatus for encoding video signals using motion vectors of predictive image frames of an auxiliary layer and decoding such encoded video data is provided. Video signal is encoded in scalable MCTF scheme to output an enhanced layer (EL) bitstream and encoded in another specified scheme to output a base layer (BL) bitstream. During MCTF encoding, information allowing a derivative vector to be used as a motion vector of an image block in a frame in the video signal is recorded in the EL bitstream. The derivative vector is obtained by multiplying a motion vector of a block, temporally adjacent to the image block, in the BL bitstream by an EL-to-BL frame interval ratio and scaling the multiplied vector by an EL-to-BL frame size ratio. Using the correlation between motion vectors of temporally adjacent frames in different layers reduces the amount of coded motion vector data.
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