Integer lapped biorthogonal transform

A type of lapped biorthogonal transform that can map integers to integers is considered. Based on the computational structure of the proposed lapped transform, an efficient multiplierless algorithm for the lapped biorthogonal transform (LBT), called integer lapped biorthogonal transform (IntLBT), is...

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Bibliographic Details
Main Authors: Zhong Guangjun, Cheng Lizhi, Chen Huowang
Format: Conference Proceeding
Language:English
Subjects:
Bit rate
Computational complexity
Discrete cosine transforms
Discrete wavelet transforms
Flowcharts
Image coding
Performance gain
Performance loss
Transform coding
Wavelet transforms
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Summary:A type of lapped biorthogonal transform that can map integers to integers is considered. Based on the computational structure of the proposed lapped transform, an efficient multiplierless algorithm for the lapped biorthogonal transform (LBT), called integer lapped biorthogonal transform (IntLBT), is proposed. The proposed IntLBT is implemented by a series of dyadic lifting steps, and provides fast, efficient computation of the transform coefficients as well as the ability to map integers to integers. Application of the novel IntLBT in lossy image coding gains very competitive results comparing to the performance of the much more complex Cohen-Daubechies-Feauveau (CDF) 9/7-tap biorthogonal wavelet with irrational coefficients.
DOI:10.1109/ICIP.2001.958530