MATLAB: How to solve the error

codeerrorsolution

when I run the code:
function [shape] = Classify(ImageFile)
if ndims(imread(ImageFile))>2
RGB = imread(ImageFile);
GRAY = rgb2gray(RGB);
else
  GRAY=imread(ImageFile);
  RGB=GRAY;
end
threshold = graythresh(GRAY);
BW = im2bw(GRAY, threshold);
%Invert the Binary Image
BW = ~ BW;
[~,L] = bwboundaries(BW, 'noholes');
STATS = regionprops(L,'all'); 
for i=1:length(STATS)
if norm([STATS(i).Extrema(2,1), STATS(i).Extrema(2,2)]-[STATS(i).Extrema(1,1), STATS(i).Extrema(1,2)])<5 %TR,TL
  %can be triangle hexagon pentagon
  if norm([STATS(i).Extrema(4,1), STATS(i).Extrema(4,2)]-[STATS(i).Extrema(3,1), STATS(i).Extrema(3,2)])<5 %RT,RB
  %can be pentagon triangle
      if  norm([STATS(i).Extrema(4,1), STATS(i).Extrema(4,2)]-[STATS(i).Extrema(5,1), STATS(i).Extrema(5,2)])<5 %RT,RB,BR = Triangle
          shape(i,1)=1; % Triangle
      else
          shape(i,1)=3; % Pentagon
      end
  else
       shape(i,1) = 4; % hexagon
  end
elseif (STATS(i).MajorAxisLength/STATS(i).MinorAxisLength<1.1 && STATS(i).Eccentricity <0.5 || (STATS(i).Solidity/STATS(i).Extent)==1)&(STATS(i).Area<0.1*numel(GRAY))
  shape(i,1)=2; % Rectangle
else
  shape(i,1)=0;
end
end
if ~isempty(find(shape==2))
  disp('Rectangle found');
else
  disp('No rectangle in the image')
end
return
I've the error "??? Input argument "ImageFile" is undefined.
Error in ==> Classify at 3 if ndims(imread(ImageFile))>2"
How to solve it?

Best Answer

How did you run this code?
This file is a function, it should be called: in the windows Matlab command, type
shape = Classify(ImageFile)
Look at Function
Related Question