Signal procession is analysised by Wavelet Toolbox and filters based Signal process Toolbox of MATLAB. Specialties and using areas of the two ways are studied.
利用MATLAB软件包中的信号处理部分，用小波和滤波器方法为实验数据去噪声，并比较各种方法的特点和适用范围。
The experimental results show that the effect of compressing the true color images and indexed color images based on Wavelet toolbox of MATLAB is much better.
实验证明使用该方法对图像进行压缩，压缩比高且压缩后图像质量较好。
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