Matlab Files

Image Processing:

CalcPSNR returns the PSNR between the original image and its approximation
DCos generates a matrix whos columns are discrete cosine vectors
DetectLines returns the index of vertical impulsive lines in an image
GenerateHats Generates a hat dictionary
GenerateTrapezium generates a vector representing a trapezium
ImageApproximation Returns an approximation of an image generated by choosing atoms from dictionary using either thresholding or a greedy algorithm
RemoveSimilarAtoms removes any similar atoms from a given dictionary
TranslatePrototype translates a vector to construct either a dictionary or a basis

To download all the routines click here.
All the presented routines are described in detail in our manual (ps,pdf).