Based on discrete orthogonal tchebichef transform for image compression
Jiaye Li · Jisuanji gongcheng yu sheji · 2013
After analyzing joint photographic experts group(JPEG)compression based on the discrete cosine transform(DCT), discussing orthogonal basis functions as the kernel for DCT and discrete tchebichef transform(DTT),a novel approach of based on DTT for image compression is proposed.According to JPEG standard quantization table,using information entropy,quantization table of algorithm of based on DTT for image compression is designed.A comparison for color image between based on DTT and JPEG image compression and reconstruction using MATLAB R2010B.An simulation example is presented two methods have almost the same performance in peak signal to noise ratio(PSNR),but image compression based on DTT perform more compact than JPEG in encode length.