How do i count the horizontal lines in an image
4 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
N/A
el 26 de Feb. de 2018
Respondida: Akira Agata
el 27 de Feb. de 2018
I am new to MATLAB. How do i write a code which detects and counts horizontal lines in an image. Example is below. Any method of image analysis would be helpful. Thank you
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/170791/image.jpeg)
2 comentarios
Akira Agata
el 27 de Feb. de 2018
Is it possible to erase the red line mesh? Or do we have to use this image as an input?
Respuesta aceptada
Akira Agata
el 27 de Feb. de 2018
Thank you for uploading the clean image!
In my view, one simple and straight-forward solution will be regionprops function. The following is one example to extract horizontal lines in the image.
% 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','BoundingBox','Orientation'});
s = struct2table(s);
% Extract the regions which satisfies both the following conditions:
% (1) (Minor axis length)/(Major axis length) <= 10%
% (2) Angle with horizontal line <= +- 5 degree
idx =...
(s.MinorAxisLength ./ s.MajorAxisLength <= 0.1) &...
(abs(s.Orientation) <= 5);
s = s(idx,:);
% Show the result
figure
imshow(I)
hold on
for kk = 1:height(s)
rectangle(...
'Position', s.BoundingBox(kk,:),...
'EdgeColor','r')
end
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/179478/image.png)
0 comentarios
Más respuestas (0)
Ver también
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!