Originally Posted by anwesa
I am new in C and in image processing field as well.Can some1 please give me C code for adaptive filter.
No, this isn't the place to come to get people to write code for you.
We will be very happy to HELP you with problems...so post what you've written/tried so far, and where you're stuck (along with DETAILS, like the error(s) you get, version/distro of Linux, etc.), and we can help. Otherwise, you can find sample code in MANY places on the Internet...start there.