Detecting circle in an image
显示 更早的评论
Hi, I would like to know is it possible to detect the circles in the image below using MATLAB's Image Processing Toolbox. The circles are imperfect and the radius are varied. Anyone can help me with this? Thanks in advance.
采纳的回答
Image Analyst
2012-3-8
0 个投票
I'd probably just sum the image horizontally and vertically to detect the grid locations and then process the inside of each grid location (each "tile") to see if the mean gray level is less than some number. That's what I think would be the simplest approach.
2 个评论
Natsu
2012-3-8
Image Analyst
2012-3-8
meanGrayValue = imageArray(row1:row2, col1:col2);
if meanGrayValue < 150
% It has user-written stuff in it
else
% It's just the number alone.
end
更多回答（1 个）
Sean de Wolski
2012-3-8
0 个投票
One of R2012a's not-so-hidden gems!
1 个评论
Image Analyst
2012-3-11
Brett uploaded an app based on that: http://www.mathworks.com/matlabcentral/fileexchange/34365-findcirclesgui
类别
在 帮助中心 和 File Exchange 中查找有关 Image Transforms 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
