Error Concealment Using Multiple Description Coding and LIoyd-max Quantization

Ali Farzamnia, Sharifah K. Syed-Yusof, Norsheila Fisal

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Citations (Scopus)


There has been increasing usage of Multiple Description Coding (MDC) for error concealment in non ideal channels. This paper attempts to conceal the error and reconstruct the lost descriptions by combining MDC and LIoyd-max quantizer. At first original image downsampled to four subimages then by using wavelet transform each subimage is mapped to transform domain then descriptions are quantized by LIoyd-max and coded. Since in proposed method wavelet transform is been used, there could be no blocking effect as compared to DCT transform. The results show that average MSE (mean square error) for our proposed method in comparison with DCT method (in other paper) has decreased from 240 to 152 in 0.625 bpp (bit per pixel), from 161 to 107 in 1 bpp and from 96 to 73 in 2 bpp in rate-distortion performance. Therefore, this method is suitable for low capacity channels. By losing descriptions, the obtained image is still in good quality (subjective evaluation and PSNR values) as compared to a method which is DCT and MDSQ (multiple description scalar quantization).

Original languageEnglish
Title of host publication2011 IEEE Symposium on Computers and Informatics - ISCI 2011
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages5
ISBN (Electronic)9781612846903, 9781612846910
ISBN (Print)9781612846897
Publication statusPublished - 21 Jul 2011
Externally publishedYes
Event2011 IEEE Symposium on Computers and Informatics - Kuala Lumpur, Malaysia
Duration: 20 Mar 201123 Mar 2011


Conference2011 IEEE Symposium on Computers and Informatics
Abbreviated titleISCI 2011
CityKuala Lumpur

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