Re: int im_lindetect ( IMAGE *in, IMAGE *out, INTMASK *mask) I have a prototyped a procedure (involving im_lindetect) which works nicely but manually in NIP2. Now I'm trying to code the procedure into dedicated C code, and I see I need to provide a suitable mask. I'd like to use the same mask that comes with the default installation of NIP2, so that is my question. Q: What is the default mask used in the standard NIP2 implementation of im_lindetect ? Thanks Doug