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Improvement on image transform coding by reducing interblock correlation.

K W Lim1, K W Chun, J B Ra

  • 1Dept. of Electr. Eng., Korea Adv. Inst. of Sci. and Technol., Taejon.

IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society
|January 1, 1995
PubMed
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This study introduces a new transform coding method to reduce image blocking effects. The technique minimizes information loss, enhancing visual quality compared to JPEG and LOT.

Area of Science:

  • Digital image processing
  • Signal coding theory

Background:

  • Transform coding methods like JPEG suffer from interblock correlation due to small block sizes.
  • This correlation leads to information loss and blocking artifacts in compressed images.

Purpose of the Study:

  • To improve the efficiency of transform coding by addressing interblock correlation.
  • To reduce information loss during image compression for a fixed bit rate.

Main Methods:

  • Proposed a novel transform coding technique with minor modifications to conventional methods.
  • Focused on alleviating interblock correlation inherent in small block sizes.

Main Results:

  • The method significantly reduces blocking effects in images.

Related Experiment Videos

  • Demonstrated enhanced subjective visual quality compared to JPEG and LOT algorithms.

    • Conclusions:

    • The proposed method offers a practical improvement over existing transform coding techniques.
    • Effective in mitigating blocking artifacts and improving visual fidelity in image compression.