![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1518361/image.jpeg)
Finding a largest rectangular object in binary image with minimum length and width
8 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
How to find a largest rectangular object in binary image. Any connected object should be ignored. The object should have a minimum length of 50 pixels and minimum width of 4 pixels. The examples images are attached.
Thanks
6 comentarios
Walter Roberson
el 24 de Oct. de 2023
When you indicated earlier that "Any connected object should be ignored" my understanding was that if you had rectangles that were connected to any other shape, that the entire blob should be ignored . That is why I coded regionprops to compare the convex area to the image area: those two values are only equal for blobs that are rectangles.
Respuestas (1)
Walter Roberson
el 22 de Oct. de 2023
P = regionprops(YourBinaryImage, 'Area', 'ConvexArea', 'BoundingBox');
PA = vertcat(P.Area);
PCA = vertcat(P.ConvexArea);
PBB = vertcat(P.BoundingBox);
PW = PBB(:,3);
PH = PBB(:,4);
mask = PA == PCA & PH >= 50 & PW >= 4;
selected_P = P(mask);
[largest_object_area, idx] = max([selected_P.Area]);
largest_BB = selected_P(idx).BoundingBox;
Note that here I am interpreting "width" as horizontal extent, and then by default that means "length" in your question must refer to vertical extent.
0 comentarios
Ver también
Productos
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!