Two new functions are added into the Image Processing plugin of product POLLUXPLUS. These two functions are two static function for the CImage class. One of the function inverseFourierTransform are used to perform the inverse fourier transform. Another function is a low pass filter, which called lowpass.
The usuage of these two functions can be found in the documentation of the Image Processing module in this link: http://bpolluxplus.wordpress.com/2011/01/13/pluginimage-processing/