Exporting coordinates from a binary image

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LUIS MARIA ROSETY BERNAL
LUIS MARIA ROSETY BERNAL am 17 Feb. 2022
Kommentiert: Image Analyst am 18 Feb. 2022
I would like to extract the necessary coordinates of these structures in order to introduce them in a software that will use them as input to reproduce the image for mechanical simulation purposes. I have never used a matlab-based image analysis approach, would you know how proceed?

Akzeptierte Antwort

yanqi liu
yanqi liu am 18 Feb. 2022
yes,sir,may be use image label to get every block,such as
clc; clear all; close all;
[img,map] = imread('https://www.mathworks.com/matlabcentral/answers/uploaded_files/898115/image.png');
if ~isempty(map)
img = ind2rgb(img,map);
end
bw = im2bw(img,0.2);
bw2 = imclose(bw,strel('line',100,0));
bw2 = imclose(bw2,strel('line',50,90));
bw2 = imfill(bw2, 'holes');
bt = logical(bw2-bw);
[L,num] = bwlabel(bt);
% choose block
figure; imshow(img, []); hold on;
h = imshow(label2rgb(L));
set(h,'AlphaData',0.6)

Weitere Antworten (1)

Image Analyst
Image Analyst am 17 Feb. 2022
Not sure what that software wants, but it looks like those are outlines of labeled regions, so you could extract each region one at a time with ismember() and then use bwboundaries() to get the (x,y) coordinates of the single region and write it out. Then just repeat for every region.
  2 Kommentare
LUIS MARIA ROSETY BERNAL
LUIS MARIA ROSETY BERNAL am 18 Feb. 2022
So i have to clarify that I am a newbie with matlab. this is a CAD software where i need to provide coordinates ( (x,y) values ) in order to reproduce this same image. what I need is to export the coordinates of the cells that have a value different from 0.
Image Analyst
Image Analyst am 18 Feb. 2022
It looks like that is just the binary image you posted. Is that what your program wants?

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