From: Walter Roberson on
bovitch wrote:

> i use DFT (the discrete Fourier transform) but i dont know how implying
> the DFT of log(mask)

You said that the mask was binary. What does the log of a binary mask
mean? Unless the log of the 0 values should go to -infinity and the log
of the 1 values should go to 0? But the DFT of that doesn't sound very
useful.