Bit-rate control algorithm for ROI enabled video coding

  • Authors:

  • Adam Pietrowcew;Andrzej Buchowicz;Władysław Skarbek

  • Affiliations:

  • Institute of Radioelectronics, Warsaw University of Technology, Warszawa, Poland;Institute of Radioelectronics, Warsaw University of Technology, Warszawa, Poland;Institute of Radioelectronics, Warsaw University of Technology, Warszawa, Poland

  • Venue:
  • CAIP'05 Proceedings of the 11th international conference on Computer Analysis of Images and Patterns
  • Year:
  • 2005

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Abstract

The bit-rate control algorithm allowing ROI encoding in a video sequence has been presented in this paper. The algorithm distributes available bit budget among image layers taking into consideration both the distance from ROI and the local image complexity. It improves the image quality in ROI by lowering the image quality outside ROI with the preservation of the global constraint of the encoded stream bit-rate and the gradual quality degradation outside ROI.