Steinbach, Wiegand, Girod: Using Multiple Global Motion Models for Improved Block-Based Video Coding, submitted to ICIP'99 USING MULTIPLE GLOBAL MOTION MODELS FOR IMPROVED BLOCK-BASED VIDEO CODING

نویسندگان

  • Eckehard Steinbach
  • Thomas Wiegand
  • Bernd Girod
چکیده

We present a new motion representation and estimation scheme that leads to improved coding eeciency of block-based video coders like e.g. H.263. The proposed scheme is based on motion-compensated prediction from more than one reference frame. The reference pictures are warped versions of the previously decoded frame. AAne motion parameters are used as warping parameters approximating the motion vector eld. Motion compensation is performed using standard block matching in the multiple reference frames buuer. The frame reference and the aane motion parameters have to be transmitted as side information. The approach is incorporated into an H.263-based video codec at minor syntax changes and embedded into a rate-constrained motion estimation and macroblock mode decision frame work. In contrast to conventional global motion compensation, where one motion model is transmitted, we show that multiple global motion models are of beneet in terms of coding eeciency. Signiicant coding gains in comparison to the TMN-10 test model of H.263+ are achieved that provide bit-rate savings between 20 % to 35 % for the various sequences tested.

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منابع مشابه

Steinbach, Wiegand, Girod: Using Multiple Global Motion Models for Improved Block-Based Video Coding, in Proc. ICIP'99 USING MULTIPLE GLOBAL MOTION MODELS FOR IMPROVED BLOCK-BASED VIDEO CODING

A novel motion representation and estimation scheme is presented that leads to improved coding e ciency of blockbased video coders like, e.g., H.263. The proposed scheme is based on motion-compensated prediction from more than one reference frame. The reference pictures are warped or globally motion-compensated versions of the previous frame. A ne motion models are used as warping parameters ap...

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تاریخ انتشار 1999