I have mass images that I want to extract the feret, circularity and area of but how do I know that's what is being counted?

I managed to write this code. But what in the image is it measuring the properties from? like how can i confirm that it is measuring the area and number of the cells in the image?:

% read the image and convert to binary

im = imread('my_image.png');

bw = im2bw(im);

% remove small objects

bw = bwareaopen(bw, 50);

% fill the holes

bw = imfill(bw, 'holes');

% label the objects

cc = bwconncomp(bw);

labeled = labelmatrix(cc);

% extract region properties

props = regionprops(cc, 'Area', 'Perimeter', 'Centroid', 'Eccentricity', 'Circularity', 'MinorAxisLength', 'MajorAxisLength');

% loop over the objects

for i = 1:length(props)

% extract the properties for the i-th object

% display the properties

disp(['Object ', num2str(i), ':']);

disp(['Area = ', num2str(area)]);

disp(['Perimeter = ', num2str(perimeter)]);

disp(['Centroid = ', num2str(centroid)]);

disp(['Eccentricity = ', num2str(eccentricity)]);

disp(['Circularity = ', num2str(circularity)]);

disp(['Feret diameter = ', num2str(feret_diameter)]);

end

% display the labeled image

imshow(label2rgb(labeled))

Thanks,

L.

Answer 1

[Image Analyst]

You can display bw:

imshow(bw);

That will show you the blobs that are being measured.