MATLAB: Boundary mark of the image

image processing

I want to mark the boundary of the centered circular objects. I also want to calculate the area of the object. How can I do it?

Best Answer

You can use the “bwboundaries” function for tracing boundaries and use an additional ‘noholes’ parameter to accelerate the process for finding circular objects only. Further, to find the area of the detected object you can use the “regionprops” function. For detailed information on how to do this please see the documentation link below - https://www.mathworks.com/help/images/identifying-round-objects.html

Related Solutions

MATLAB: Thin the boundary of objects of black & white images

Use imerode.

From Matlab documentation:

IM2 = imerode(IM,SE) erodes the grayscale, binary, or packed binary image IM, returning the eroded image IM2. The argument SE is a structuring element object or array of structuring element objects returned by the strel function.

Example:

Erode a binary image with a disk structuring element.

originalBW = imread('circles.png');  
se = strel('disk',11);        
erodedBW = imerode(originalBW,se);
imshow(originalBW), figure, imshow(erodedBW)

MATLAB: I wanted to mark a point in the center of an image

[rows columns numberOfColorChannels] = size(yourImage);

y_center = rows / 2; x_center = columns / 2;

Best Answer

Related Solutions

MATLAB: Thin the boundary of objects of black & white images

MATLAB: I wanted to mark a point in the center of an image

Related Question