Image Signal Decomposition and Reconstruction Based on Wavelets

─By studying the multi-resolution analysis generated by the scale function, the two-scale function, decomposition algorithm and reconstruction algorithm are discussed. And then the signal decomposition algorithm and reconstruction algorithm and the schematic diagram of signal decomposition and transmission are obtained. Basis on it, the bivariate tensor product multi-resolution analysis and the algorithm of decomposition and reconstruction are discussed. Finally, the method of decomposing and reconstructing the image by using multivariate wavelet are obtained.