Curvature estimation in contour extracted from gray image

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Hi,
I have the edges/contours extacted from the gray image, now I intend to estimate the curvature.
For e.g., I have attached my sample contour here..
Could someone help me with this out ??

Accepted Answer

KSSV
KSSV on 24 Jun 2021
Edited: KSSV on 25 Jun 2021
You may use this file exchange function:
Check the code:
load('Test image.mat') ;
[y,x] = find(I) ;
idx = boundary(x,y) ;
x = x(idx) ; y = y(idx) ;
Vertices = [x y] ;
k=LineCurvature2D(Vertices) ;
N=LineNormals2D(Vertices) ;
figure(1)
scatter(x,y,20,k,'filled')
colorbar
title('curvature')
figure(2)
plot(x,y)
hold on
plot([Vertices(:,1) Vertices(:,1)+10*N(:,1)]',[Vertices(:,2) Vertices(:,2)+10*N(:,2)]');
title('Normals')
  11 Comments
Turbulence Analysis
Turbulence Analysis on 25 Jun 2021
While executing, N=LineNormals2D(Vertices); it genartes two columns , Is it normal vectors in x, y.. ??

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