MATLAB: Is this possible to convert a thick line or curve into its thinner version

digital image processing

Is this possible to convert a thick line or curve into its thinner version in an image using Matlab / Octave? Please view the image. Right side curves (alphabets) are thicker and need to be converted into the left ones. i.e., a single line version is needed.

thanks

Best Answer

Take an image with the best exposure possible, having high contrast between the paper white and font black. Use a simple tresholding method like Otsu's and get a BW binary image. Use:

a) erosion (imerode) with a disk structural element (strel)

b) use bwulterode

c) you can also use bwmorph with 'skel' option.

I am sure there are other ways to do it too. Just a couple simple ones that might help start.

Related Solutions

MATLAB: Check if the code is correct or not for finding the diameter of objects in an image.

No, you need to create a binary image first, plus you can do it all in one call to regionprops():

originalImage = imread('result.jpg');
originalImage=rgb2gray(originalImage);
binaryImage = originalImage > thresholdValue; % for example 80 or 142 or some value.
labeledImage = bwlabel(binaryImage, 8);
D=regionprops(labeledImage,'area','EquivDiameter');

MATLAB: Number of Object in binary image

Try this:

bw = imread('bw.png');
if ndims(bw) > 1
	bw = bw(:,:,1);
end
% Threshold
bw = bw > 128;
subplot(1, 2, 1);
imshow(bw, []);
% Fill holes
bw = imfill(bw, 'holes');
% Get areas
props = regionprops(bw, 'Area');
sortedAreas = sort([props.Area], 'descend')
% Looks like we need to throw away any blobs less than 1000 pixels or so
bw = bwareaopen(bw, 1000);
subplot(1, 2, 2);
imshow(bw);
% Count the blobs
[labeledImage, numBlobs] = bwlabel(bw);
fprintf('Found %d shapes.\n', numBlobs);

Best Answer

Related Solutions

MATLAB: Check if the code is correct or not for finding the diameter of objects in an image.

MATLAB: Number of Object in binary image

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