Downsampling based multiple description coding with optimal reconstruction filters


Yapici Y., Demir B., Ertuerk S., URHAN O.

IEEE 15th Signal Processing and Communications Applications Conference, Eskişehir, Turkey, 11 - 13 June 2007, pp.1020-1022 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • Doi Number: 10.1109/siu.2007.4298731
  • City: Eskişehir
  • Country: Turkey
  • Page Numbers: pp.1020-1022

Abstract

In this paper, a multiple description image coding scheme is proposed to facilitate the transmission of images over media with possible packet loss. The proposed method is based on finding the optimal reconstruction filter coefficients that will be used to combine the multiple descriptions, based on least squares minimisation. Firstly, the original image is downsampled and each sub-image is coded using standard JPEG. These decoded images are then mapped to the original image size using the optimal filters. Multiple descriptions consist of coded downsampled images and the corresponding optimal reconstruction filter coefficients. It is shown that the proposed method gives superior results compared with standart interpolation filters (i.e.bicubic and bilinear).