Signal processing

Files
file	average1.c
	return the average of the pixel values of an image
file	bruite.c
	adds noise to an image
file	convol.c
	convolution
file	directionalfilter.c
	directional filter for curvilinear feature extraction
file	diZenzo.c
	diZenzo gradient pour les images couleurs
file	fft.c
	fast Fourier transform
file	gaussianfilter.c
	Gaussian filter operator.
file	gradient_abs.cpp
	Computes the absolute value of the gradient of the spline approximation of the image.
file	gradientcd.c
	Canny-Deriche gradient operator.
file	laplacian.c
	Laplacian operator.
file	longestplateau.c
	finds the location of the longest plateau in 1D sequence
file	maxflow.cpp
	Calculates the optimal surface segmentation with the maximum flow algorithm [1].
file	meanfilter.c
	Mean filter operator.
file	measure.cpp
	Normalized absolute measure calculated from the image.
file	randimage.c
	random image generation
file	ungerflow.cpp
	Noise filtering with the Ungerflow algorithm [1].
file	variance1.c
	return the variance of the pixel values of an image