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How can i estiamte the local distance between two boundaries at each point ??

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Surendra Ratnu 2022-10-12

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评论： Surendra Ratnu 2022-10-13

采纳的回答： Chunru

I attched image and .mat file of boundaries. We want to measure the distnace between red and green boundary at each point which is shown in image_1. We are calulated distrance using pdist2() function, but it gives distance from first point on boundary_1 to all points of boundary_2 and so on. But It should calculate the distance between one points on boundary_1 (red colour boundary in image_1) and nearest point on another boundary(green colour boundary in image_1).

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Surendra Ratnu 2022-10-12

编辑：Surendra Ratnu 2022-10-12

Thank you for your answer chunru. How can i draw the lines between boundary one and boundary 2 so i can identify which points are taken for min distance.

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Chunru 2022-10-12

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编辑：Chunru 2022-10-12

在 MATLAB Online 中打开

load(websave("bw1.mat", "https://www.mathworks.com/matlabcentral/answers/uploaded_files/1153258/bw1.mat"))

load(websave("bw2.mat", "https://www.mathworks.com/matlabcentral/answers/uploaded_files/1153263/bw2.mat"))

d = pdist2(M, N);

plot(M(:,1), M(:, 2), 'r-', N(:,1), N(:,2), 'g');

set(gca, 'YDir', 'reverse');

axis equal

hold on

for i=1:10:size(d, 1) % change 10 to 1 for every points

[~, imin] = min(d(i, :)); % closest distant to boundary 2

plot([M(i,1) N(imin,1)], [M(i,2) N(imin,2)], 'b-')

end

% whos

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Chunru 2022-10-13

Then you have to specify which point to be examined. And then just show the distance for the specified point.

Surendra Ratnu 2022-10-13

But in my case there are no of extruded parts and i want to automated them to calculate the length of the extruded part. Can you eloborate on this.

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