Why it is showing error?

close all;
clear all;

im = imread(' Number Plate Images/ image1.png');
imgray = rgb2gray(im);
imbin = imbinarize(imgray);
im = edge(imgray, 'prewitt');

% Below steps are to find location of number plate
Iprops = regionprops(im,'BoundingBox','Area', 'Image');
area = Iprops.Area;
count = numel(Iprops);
maxa= area;
boundingBox = Iprops.BoundingBox;

for i = 1:count
    
   if maxa < Iprops(i).Area
       maxa = Iprops(i).Area;
      ​ boundingBox = Iprops(i).BoundingBox;
      
   end
   
end   

im = imcrop(imbin, boundingBox);
im = bwareaopen(~im, 500);
[h, w] = size(im);

imshow(im);

Iprops = regionprops(im,'BoundingBox','Area', 'Image');
count = numel(Iprops);
noPlate = [];

for i=1:count
    
   ow = length(Iprops(i).Image(1,:));
   oh = length(Iprops(i).Image(:,1));
   if ow<(h/2) && oh>(h/3)
       letter = Letterc(Iprops(i).Image);
       noPlate = [noPlate letter];
       
   end
   
end

[Geoff Hayes]

Kartikey - is line 20

boundingBox = Iprops(i).BoundingBox;

? It seems fine.. I do wonder about

area = Iprops.Area;
count = numel(Iprops);
maxa= area;
boundingBox = Iprops.BoundingBox;

What are the dimensions of maxa and boundingBox when they are initialized? Are they scalars or arrays? If arrays, will this be a problem when doing the comparison at

if maxa < Iprops(i).Area

?

Answer 1

[Geoff Hayes]

Kartikey - similar to one of your other questions, there is a special character at the line where you are doing the assignment. If, in Linux, I use cat -t yourFileName.m on the above code, then I see

for i = 1:count
    
   if maxa < Iprops(i).Area
       maxa = Iprops(i).Area;
      ? boundingBox = Iprops(i).BoundingBox;
      
   end
   
end  

that there is a question mark on that line. I would delete this line and re-type the assignment.