Frequency domain post-processing technique based on POCS

Yoon Kim, Chun Su Park, Sung Jea Ko

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


A novel post-processing technique in the DCT domain, based on the theory of the projection onto convex sets (POCS), to reduce the blocking artifacts in the block discrete cosine transform (BDCT)-coded images, is proposed. Computer simulation results indicate that the proposed scheme performs better than conventional post-processing algorithms. Furthermore, the proposed algorithm can be implemented without DCT/IDCT operations. Estimates of computation savings vary between 41 and 64% depending on the task.

Original languageEnglish
Pages (from-to)1583-1584
Number of pages2
JournalElectronics Letters
Issue number22
Publication statusPublished - 2003 Nov 22

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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