Inverse motion compensation for DCT block with unrestricted motion vectors

Min Cheol Hwang, Seung Kyun Kim, Sung Jea Ko

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Existing methods for inverse motion compensation (IMC) in the DCT domain have not considered the unrestricted motion vector (UMV). In the existing methods, IMC is performed to deal with the UMV in the spatial domain after the inverse DCT (IDCT). We propose an IMC method which can deal with the UMV directly in the DCT domain without the use of the IDCT/DCT required by the existing methods. The computational complexity of the proposed method can be reduced by about half of that of the brute-force method operating in the spatial domain. Experimental results show that the proposed method can efficiently reduce the processing time with similar visual quality.

Original languageEnglish
Pages (from-to)1199-1201
Number of pages3
JournalIEICE Transactions on Information and Systems
Issue number8
Publication statusPublished - 2007 Aug


  • DCT domain
  • Motion compensation
  • Transcoding
  • Unrestricted motion vector

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering
  • Artificial Intelligence


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