小波变换的基本思想是用一组小波或基函数表示一个函数或信号。-The basic idea of ​ ​ the wavelet transform is a wavelet or base function represents a function or signal.

jpeg coder and decoder with out using block proc function.Reading the image into 8x8 blocks and apllied the DCT transform and quantization using quantization tables.After that seperation of DC and AC coefficients and I applied the DPCM for DC coeffci