High picture quality image compression technique for mobile communication

High picture quality image compression technique for mobile communication is presented. The exact location information of the important DWT coefficients is generally needed for reconstructing the image. In this work, however, such information is not needed because it can be obtained from the DWT-app...

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Bibliographic Details
Published in2002 IEEE International Conference on Industrial Technology, 2002. IEEE ICIT '02 Vol. 2; pp. 754 - 758 vol.2
Main Authors Kondo, H., Ishikawa, T., Kouda, T., Zhang, L.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2002
Subjects
Communications technology
Discrete wavelet transforms
Equations
Image coding
Image reconstruction
Image sampling
Mobile communication
Transform coding
Wavelet coefficients
Wavelet transforms
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Summary:High picture quality image compression technique for mobile communication is presented. The exact location information of the important DWT coefficients is generally needed for reconstructing the image. In this work, however, such information is not needed because it can be obtained from the DWT-approximation. Through a one dimensional directional difference operator not only the exact location information of the DWT coefficients but also the rough estimate of the coefficient itself can be obtained from the DWT-approximation when Haar mother wavelet function is utilized. The direction of the difference operator are different each other according to the DWT-details (horizontal, vertical and diagonal detail). This paper shows highly efficient image compression can be achieved when such DWT-approximation information is utilized well.
ISBN:0780376579
9780780376571
DOI:10.1109/ICIT.2002.1189261