Image Compression Method Research in Wavelet Transform Domain by Using BP Neural Network
在小波变换域内应用BP网络进行图象压缩的方法研究

After discussing the second level low frequencies part of wavelet transform, which is rather difficult to be compressed, we can use the nonlinear mapping capacity of multi layer free forword neural network on BP algorithm. A scheme of image coding based on nonlinear predictor is put forward. Redundance among the wavelet coefficients can be ridded effectively with the help of this method. On the condition of relatively low distortion degree , the rather satisfactory compress rate can be achieved.