i want to find centroid of the detected object in a image ..How to do that ?image is attached here

i have done segmentation now i want find centroid of the detected object ,how i will do it using regionprops

Answer 1

[Image Analyst]

You can use regionprops

props = regionprops(binaryImage, 'Centroid');
allCentroidsXY = vertcat(props.Centroid);

See my Image Processing Tutorial in my File Exchange for a full demo.

[amina khan]

thankyou for quick reply !i have find out the centroids, now i have to take the centroid of one object(a) of image and map this with other centroids of objects of second image .i want to use the first object(a) centroid as mask and want to apply on second image objects ,objects are actually cancer cells .i want to take same color variations in my created image by using this mask object .please guide how i will use te centroids .

[amina khan]

first image is segmented image ,i take the centroid of one object ,i use label ==29 ,its a 29th object ,in second image ,now i want to mapp this single centroid on all the objects in 3rd image .how i will do this please help me ,i have tried but did get the required output.

Answer 2

[Walter Roberson]

If you pass regionprops a logical array as the first parameter and request 'centroid' then it will return a structure array in which there is one centroid for each of those white blobs.

If you pass regionprops an array of any other numeric data type as the first parameter, and request 'centroid', then it will return a scalar structure in which the only centroid is for the all of the white blobs considered as if they form a single object.