MATLAB: How to count repetitive features in an image

image blob countingImage Processing Toolbox

How to count the repetitive patterns in an image? Like the total of number of these tiny squares in the attached image?

Dose MatLab provide any image analysis package for this purpose?

Best Answer

Threshold and call bwlabel.

binaryImage = grayImage < someNumber;
[labeledImage, numBlobs] = bwlabel(binaryImage);

See my Image Segmentation Tutorial for a full demo. http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862

Related Solutions

MATLAB: Counting holes in an image

Threshold then call imclearborder() and bwlabel(). Assuming you have dark holes on a bright background:

% Binarize:
binaryImage = grayImage < someValue;
% Remove those touching border
binaryImage = imclearborder(binaryImage);
% Count holes:
[~, numHoles] = bwlabel(binaryImage);

MATLAB: How to crop bigger size of blob in binary image and count its pixel .

Not sure what you mean. You can use imcrop() if you want. You can also find the bounding boxes if you want:

props = regionprops(binaryImage, 'BoundingBox');

To crop out each one individually, do this

for k = 1 : length(props)
    thisBB = props(k).BoundingBox;
    subImage = imcrop(binaryImage, thisBB);
    figure;
    imshow(subImage);
end

This is done in my Image Processing Tutorial

Best Answer

Related Solutions

MATLAB: Counting holes in an image

MATLAB: How to crop bigger size of blob in binary image and count its pixel .

Related Question