lut.m

一个查找表的程序

%LUT operation
%
%  performs LUT on an array: B[k] = A[LUT[k]]
% 
%  Usage:
%   B = mylut(A, LUT)
% 
%  Inputs:
%    A: indexing into the LUT, MATLAB indexing starting from 1. 
%         values less than one or greater than length(LUT) are IGNORED.
%         A may also be of class single/double - non integer values are cast to int (fractions are ignored).
%    LUT a one dimensional vector
%  Output:
%    B: A after the LUT, same class as LUT.
% 
%  To compile the c++ source into Matlab mex file:
%  1. setup you mex compiler:
%       >> mex -setup
%  2. Compile:
%       >> mex -O LUT.cpp
%
% 
%  Copyright (c) Bagon Shai
%  Department of Computer Science and Applied Mathmatics
%  Wiezmann Institute of Science
%  http://www.wisdom.weizmann.ac.il/
% 
%  Permission is hereby granted, free of charge, to any person obtaining a copy
%  of this software and associated documentation files (the "Software"), to deal
%  in the Software without restriction, subject to the following conditions:
% 
%  1. The above copyright notice and this permission notice shall be included in 
%      all copies or substantial portions of the Software.
%  2. No commercial use will be done with this software.
%  3. If used in an academic framework - a proper citation must be included.
% 
%  The Software is provided "as is", without warranty of any kind.
% 
%  Mar. 2007
% 
%   Implemented in a MATLAB mex file.
%#mex