Same as previous post, you can utilize regionprops function, like:
% Read your image and binarize
I = imread('5159-15B front_imgJ-macro.jpg');
I = rgb2gray(I);
BW = imbinarize(I);
% Apply regionprops function
s = regionprops(~BW,{'MajorAxisLength','MinorAxisLength','Orientation','PixelIdxList'});
s = struct2table(s);
% Extract the regions which satisfies both the following conditions:
% (1) (Minor axis length)/(Major axis length) <= 20%
% (2) Angle with horizontal line is +/-45 degree with 10 degree margine
idx =...
(s.MinorAxisLength ./ s.MajorAxisLength <= 0.2) &...
(abs(abs(s.Orientation)-45) <= 10);
s = s(idx,:);
% Show the result
BWout = true(size(BW));
for kk = 1:height(s)
BWout(s.PixelIdxList{kk}) = false;
end
figure
imshow(BWout)
