ethereal的抓包过滤器原码，能对各种协议报文进行分析和过滤 -The packet capture filter ethereal source, capable of protocol analysis and packet filtering

压缩包里面有四个程序：在matlab中对图像进行过滤操作和频率操作，和函数的变换-Compressed inside four programs: the transformation of image filtering operation and the frequency of operation, and function in matlab

利用WIRESHARK抓包后，可以将过滤报文保存为TXT格式，再使用该MATLAB程序可以将报文的净荷部分提取出来(Use WIRESHARK capture package, you can save the filter message TXT format, and then use the MATLAB program can extract the payload portion of the message)