preprocess_invert.m

function out = preprocess_invert(im)
% PREPROCESS_INVERT - Inverts the image (negative) 
% Syntax:out = preprocess_invert(im)
%
% Subfunctions: 
%   See also: 

% AUTHOR    : Alex Liberzon 
% Copyright (c)2017  Tel Aviv University
%%

% out = adapthisteq(im);
out = imcomplement(im);