Detect a hole or a pit in an image.

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Writing an algorithm to detect holes or pits in the street in an image and then measure it's size and depth.

Accepted Answer

yanqi liu
yanqi liu on 26 Oct 2021
sir, here is an sample demo,for other image,may be use some DeepLearning method,such as yolo、frcnn
clc; clear all; close all;
img = imread('https://ww2.mathworks.cn/matlabcentral/answers/uploaded_files/774283/Hole_1.jpg');
im = rgb2gray(img);
bw = imbinarize(im,'adaptive','ForegroundPolarity','dark','Sensitivity',0.6);
bw = imopen(bw, strel('disk', 7));
bw = imclose(bw, strel('disk', 7));
bw = imdilate(bwareafilt(bw,1), strel('disk', 17));
[r,c] = find(bw);
wh = 7;
rect = [min(c)-wh min(r)-wh max(c)-min(c) max(r)-min(r)];
figure; imshow(img);
hold on; rectangle('Position', rect, 'EdgeColor', 'r', 'LineWidth', 2, 'LineStyle', '-');

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