MATLAB: Plot error. Character recognition error.

MATLABploterror

Hello everyone.
After executing the code below (which is an .m file):
!!!!! CODE ISNT MINE !!!!!
function digits = CarNumberRecognition(filename, verbosedrawing)
	digits = {-1,-1,-1};
	digits = cell2mat(digits);
	digareas = struct;
	%load ideal numbers
	idealnum = struct();
	for i=0:9
		idealnum(i+1).Image = imread(['ideals/num' num2str(i) '.bmp']);
	end
	srcI = imread(filename);
	srcImod = srcI;	
	colors = 'rgb';
	srcImod = imadjust(srcImod);
	srcImod = medfilt2(srcImod,[3 3]);
	filt = fspecial('log',[7 7], 0.3);
	srcImod = imfilter(srcImod,filt);
	srcImod = srcImod(:,:,:) < 150;
	
	srcImod = imopen(srcImod,strel('disk',2));
	srcImod = bwlabel(srcImod,8);
	
	Idata = regionprops(srcImod,'Area','Image','Orientation','BoundingBox','ConvexArea');
	k = 1;
	for i=1:length(Idata)
		ratio = Idata(i).BoundingBox(3)/Idata(i).BoundingBox(4);
		if Idata(i).ConvexArea > 500 && ratio < 7 && ratio > 2.5
			bound = floor(Idata(i).BoundingBox);
			numbers(k) = Idata(i);
			numbers(k).Image = imcrop(srcI,bound);
			k = k + 1;
		end
	end
	%k = k-1; %
	count = k - 1; % - 1
	k = 1;
	for i=1:count
		srcImod = imrotate(numbers(i).Image, -numbers(i).Orientation, 'bicubic','crop');
		srcIres = imresize(srcImod,[400 NaN]);
		srcImod = imadjust(srcImod);
		filt = fspecial('log',[7 7], 0.32);
		srcIlog = imfilter(srcImod,filt);
		srcImod = srcIlog;
		srcImod = imresize(srcImod,[400 NaN]);
		srcImod = srcImod (:,:,:) > 150;
 		sl = strel('disk',4); % 4

 		srcImod = imopen(srcImod,sl);
		sl = strel('disk',4); % 4
 		srcImod = imclose(srcImod,sl);
		
		probdigits = regionprops(srcImod,'Area','Orientation', 'Image', 'ConvexArea','BoundingBox');
		PlateBounds = floor([numbers(i).BoundingBox(1),numbers(i).BoundingBox(2),0,0]);
		
		for i=1:length(probdigits)		
			ratio = probdigits(i).BoundingBox(3)/probdigits(i).BoundingBox(4);
			if probdigits(i).Area > 2200 && ratio < 0.7 && ratio > 0.1 
				ImageToTest = imresize(probdigits(i).Image,[200 200]);
				c = zeros();
				for j=1:10,	c(j)= corr2 (ImageToTest,idealnum(j).Image);	end
				c = abs(c);
				maxid = 3;
				for j=2:10, if c(j) > c(maxid), maxid = j; end,	end
				if c(maxid) > 0.55
					digits(k) = (maxid-1);
					digareas(k).bound = PlateBounds + probdigits(i).BoundingBox;
					k = k + 1;
				end
				if k==4, break, end
                        end	
		end
	end
	if verbosedrawing
		imshow(srcIres);
		hold on;
		for i=1:k-1
			rect = rectangle('Position',digareas(i).bound,'EdgeColor',colors(i));
			plot (rect)
		end
	end
end
im having this error:
Error using plot
Not enough input arguments.
Error in CarNumberRecognition (line 80)
			plot (rect)
Im executing code by using next command in Command window:
digits = CarNumberRecognition('957.bmp', 1)
All this staff must recognize numbers on license plates, but i can recognize only one (see picture below). Any suggestions how to recognize all three and get rid of an error?
P.S. – attaching my result, code and couple pictures of plates

Best Answer

That's a dumb line. Just delete it. The call to rectangle() dispays/plots the rectangle. The rect variable and the call to plot() are not needed.
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