Glass bottle edge detection using Matlab sofware.
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Hi everyone..i have problem on how to detect the glass bottle by using edge detection method.
As a result..i cant get clear line of the glass bottle mouth and body.. can someone help by checking my code?
this is my code:
I=imread('red5.jpg');
figure, imshow(I);
threshold = graythresh(I);
bw1 = im2bw(I,threshold);
figure, imshow(bw1);
bw2 = bwareaopen(bw1,30);
se = strel('disk',4);
bw3 = imtophat(bw2,se);
figure, imshow(bw3);
d = edge(bw3,'sobel');
figure, imshow(d);
i still new with matlab..any very greatful for those who are helping me..
采纳的回答
Image Analyst
2015-3-6
0 个投票
First of all your lighting is horrible. You shouldn't even think about doing anything until you fix your image capture situation . Use lighting that will eliminate shadows and give a nice high contrast edge. After that, it's just simple thresholding.
And I'm not sure what that algorithm is intended to do but it looks like just a bunch of random functions thrown together in random order - not something designed to "detect the glass bottle" like you asked for. I wouldn't do anything like that. I ought to know, since I've been working on image analysis of glasses and bottles for over 20 years (as part of my job).
2 个评论
ahmad aizat
2015-3-7
Image Analyst
2015-3-7
Once you have the proper lighting you won't need edge detection. Simple thresholding will work:
binaryImage = grayImage < 128; % Or whatever value works.
You should have the sample be in a white light booth, like an integrating sphere, with light bouncing all around and coming at the bottle from every possible angle. Like a white cylinder or box painted white on the inside with the camera overhead (like you have it already).
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