A New JPEG Algorithm Based on All Phase Cosine Biorthogonal Transform
Aiping Yang · 2007
In order to improve the JPEG algorithm and heighten coding efficiency,a new transform method,the All Phase Cosine Bi-Orthogonal Transform(APCBOT),is presented in this paper which is an alternative of DCT in traditional JPEG.This new transform is origined from the convolution algorithm of Discrete Cosine Sequence Filtering(DCSF).It can appropriately attenuate the high-frequency components while transform the original images into the frequency domain,making the subsequent quantization step very simple.The simulational data in Matlab is given in this paper.The experimental results show that the APCBOT-based JEPG is superior to DCT-based JPEG in the following aspects: the simpler quantization,better quality and higher compressive rate of reconstruction image.