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Simple method for estimating distortion caused by DCT coefficient drop in compressed domain

Simple method for estimating distortion caused by DCT coefficient drop in compressed domain

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  • Author(s): J.-G. Kim 1 ; J.-S. Kim 2 ; H.-M. Kim 1
    • View affiliations
    • Affiliations: 1: Department of Electrical Engineering & Computer Science, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
      2: Division of Information Communication and Computer Engineering, Hanbat National University, Daejeon, Korea
  • Source: Volume 40, Issue 25, 9 December 2004, p. 1581 – 1583
    DOI:  10.1049/el:20046596 , Print ISSN 0013-5194, Online ISSN 1350-911X
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A simple estimation method of the distortion caused by the discrete cosine transform (DCT) coefficient dropping for rate adaptation is presented. The proposed method is based on the investigation of statistical and empirical properties of the distortion, and then modelled in a monotonically decreased manner. It is expected that the method can be employed to allocate effectively the distortion among frames in coefficient drop transcoding applications.

Inspec keywords: transcoding; distortion; discrete cosine transforms; estimation theory

Other keywords: DCT coefficient drop; distortion estimation; coefficient drop transcoding; discrete cosine transform

Subjects: Codes; Other topics in statistics; Integral transforms

References

    1. 1)
      • Batra, P., Eleftheriadis, A.: `Analysis of optimal dynamic rate shaping of Markov-1 sources', Proc. ICIP-2003, Sept. 2003, Barcelona, Spain.
    2. 2)
    3. 3)
      • Kim, J.-G., Wang, Y., Chang, S.-F.: `Content-Adaptive utility-based video adaptation', Proc. ICME-2003, July 2003, Baltimore, Maryland.
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