总结了图像的频率域滤波方法并用matlab实现，代码在word中，可以直接使用-Summed up the image of the frequency domain filtering method and use matlab to achieve, code word, you can directly use

循环码的编译码器matlab源码,能够观察输入信码，自由输入噪声，观察输出码字-Cyclic code codec matlab source code, were able to observe the letter type code, free input noise to observe the output code word

The permutation function rot_word is declared in Line 1 . The input ”word” w_in is a row vector of four bytes and is cyclically permuted according to Figure 13. In Matlab the permutation can easily be achieved by utilizing the new index vector in