% Tools for analysis and synthesis of texture images.% Version 1.0 March 2001.%% Created: Javier Portilla and Eero Simoncelli%          javier@decsai.ugr.es / eero.simoncelli@nyu.edu%% See Readme.txt file for a brief description.% See ChangeLog file for latest modifications. % Type "help <command-name>" for documentation on individual commands.% -----------------------------------------------------------------% Demonstrations: %   example1	     - synthesis of "random text"%   example2         - synthesis mixing real and synthetic data%% Primary entry points:%   textureAnalysis  - Extract a set of parameters for a texture image%   textureSynthesis - Synthesize a new texture from a set of parameters.%% Complex Steerable pyramid:%   buildSCFpyr     - Build a complex steerable pyramid representation of an input image.%   buildSCFpyrLevs - Recursive inner loop function called by buildSCFpyr.%% Utility functions:%   snr       - compute signal-to-noise ratio in dB%   expand    - resample at higher resolution (in Fourier domain)%   shrink    - resample at lower resolution (in Fourier domain)%   innerProd - Compute M' * M efficiently%   vector    - vectorize a matrix%% Functions that perform projection parameter constraint surfaces:%   modacor22	 - modify autocorrelation of an image%   modkurt	 - modify kurtosis (4th moment divided by squared variance)%   modskew	 - modify skewness (3rd moment divided by variance^1.5)%   adjustCorr1s - modify cross-correlation%   adjustCorr2s - modify cross-correlation, with some variables held fixed.%	% Example texture images:	%   text.pgm			(scanned by us)%   nuts.pgm			(from VisTex texture data base)%   metal.pgm			(VisTex)%   reptil_skin.pgm             (Brodatz)%   checkerboard.pgm		(artificial)%   sawtooth.pgm		(artificial)