How to calculate distance between center of white pixels in an image?

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Ritwik Dhar
Ritwik Dhar 2019-7-22
回答： Teja Muppirala 2019-7-22
In this iamge, I want to measure the distance between the center of area of white pixels marked below.
As these are not definite shapes, how do I find the center of these and then measure the distance in pixels between their centers.cmm_wo_circles.jpg

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KSSV
KSSV 2019-7-22
REad about imdistline; this will allow you to calculate the distance between the points interactively. For this you are supposed to have image toolbox.
[y,x] = find(I==1) ; % give the pixel value
The above line, gives you the coordinates/ points of the required pixel. YOu have the points in hand, you can do the process needed.
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Ritwik Dhar
Ritwik Dhar 2019-7-22
编辑：Ritwik Dhar 2019-7-22
Thanks!
imdistline was what I was looking for.
But could there be some way I could directly code the center pixel co-ordinates to the imdistline arguments so that I can use this with large number of images.

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更多回答（1 个）

Teja Muppirala
Teja Muppirala 2019-7-22
You can find the center (centroid) of each white region using REGIONPROPS, and then just calculate the distance between the centers that regionprops returns.
https://www.mathworks.com/help/images/ref/regionprops.html

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