Unsupervised evaluation of image segmentation
1 回表示 (過去 30 日間)
古いコメントを表示
Good evening, do you can give me a program that the evaluation of unsupervised image segmentation (region)? THANK YOU GREETING
0 件のコメント
採用された回答
Quattro
2011 年 8 月 17 日
Dear Sarah,
Your question is not completely clear to me, but if I guess correctly what you mean I suggest to search in the MATLAB help for Cluster Analysis and to take a look at the 'silhouette plot' function.
Success, Q
その他の回答 (1 件)
Image Analyst
2011 年 8 月 17 日
Often this is done by constructing an ROC Curve. ROC means "Receiver Operating Characteristic" http://en.wikipedia.org/wiki/Receiver_operating_characteristic. Basically it's the plot of the true positive rate against the false positive rate. If you have various segmentation algorithms that you want to evaluate, you need to know the "ground truth" - in other words the "right" answer or what a perfect segmentation would give. This could simply be your expert opinion as to what's right. Then you see how many pixels the algorithms got right and how many they got wrong and plot them. This will let you evaluate/compare the different algorithms you used to do your segmentation. Do some internet research for more info on ROC curves. There are ROC files in the File Exchange http://www.mathworks.com/matlabcentral/fileexchange/?term=ROC
14 件のコメント
Walter Roberson
2011 年 9 月 8 日
In general terms, the program you gave the code for reads in two images and displays them on the screen, and then stops.
I not understand the Levine and Nazif reference. Are you now asking that someone give you an overview of how a different program works? If so then you would need to post the code or a link to it.
If you are hoping for an explanation of the theory behind a published paper, then that is something you should probably talk about with a professor, or at least raise the matter in a forum dedicated to image processing theory. This forum is dedicated to answering questions about MATLAB.
参考
カテゴリ
Help Center および File Exchange で Read, Write, and Modify Image についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!