| 1. | In the traditional wavelet transform , because the wavelet filter and coefficient is fixed , as a result , when the discontinuous signal is analyzed , it will produce a lot of big wavelet coefficients in the transition , which makes against the compression . in the image processing , some image is roughness , and it may has sharp edges and oddity parts
由于传统小波变换的滤波器长度和系数是固定不变的,不能适应输入信号而变化,这使得在分析非连续信号时,在跃变点两侧会产生大的小波系数;对具有尖锐边缘、分段光滑或奇异点、图文混合图像处理效果很差。 |
