Frequency sensitivity for video compression

Guiwon Seo, Jonghwa Lee, Chulhee Lee

Research output: Contribution to journalArticle

1 Citation (Scopus)


We investigate the frequency sensitivity of the human visual system, which reacts differently at different frequencies in video coding. Based on this observation, we used different quantization steps for different frequency components in order to explore the possibility of improving coding efficiency while maintaining perceptual video quality. In other words, small quantization steps were used for sensitive frequency components while large quantization steps were used for less sensitive frequency components. We performed subjective testing to examine the perceptual video quality of video sequences encoded by the proposed method. The experimental results showed that a reduction in bitrate is possible without causing a decrease in perceptual video quality.

Original languageEnglish
Article number033107
JournalOptical Engineering
Issue number3
Publication statusPublished - 2014 Mar

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)

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