MATLAB: How to describing all enclosed white areas using rectangle box in binary images and get the coordinates

boundary

Hi everyone,

Assume I have an binary image as follows,

And I want to descrribe enclosed white areas using rectangle box as follows,

May I asak how can I get the red rectangles in the image (do not have to display it) and get the coordinates of rectangles?

Thanks in advance!

Best Answer

Please consult Walter's comment using "regionprops" function and set the "properties" to "BoundingBox".

Related Solutions

MATLAB: Hi, I need to get the X,Y coordinates of white pixels area. can anyone help me to do this,please

Use regionprops to get the size and location of each white region, and keep only the largest.

regionstats = regionprops(I7, 'all');
[~, largestidx] = max([regionstats.Area]); %find index of largest region
regionstats(largestidx).BoundingBox    %coordinate of bounding box of largest region
regionstats(largestidx).PixelList      %coordinate of all pixels in the region as a matrix

MATLAB: What are the properties in a BoundingBox from regionprops

It's [left, top, width, height]. Just be aware that the left and top are 0.5 pixels to the left and above, respectively, than the actual first column and first row of the binary image. It's because the Bounding box is defined such that it "contains" the blob, and if it ran right through the center of the top-most and left-most pixel, then that definition becomes somewhat ambiguous.

Best Answer

Related Solutions

MATLAB: Hi, I need to get the X,Y coordinates of white pixels area. can anyone help me to do this,please

MATLAB: What are the properties in a BoundingBox from regionprops

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