How to cluster heat maps?

7 次查看（过去 30 天）
Abhishek Singh
Abhishek Singh 2019-6-26
评论： Abhishek Singh 2019-6-29
Hi,
I have some contour heatmaps with 5 or 6 categorized pressure points for different channels (y-axis). The yellow shade means high pressure and blue is lower end. I was wondering if there is already an algorithm which clusters the heat maps into groups. For instance the one I am pasting here has some patches of yellow and I have some more similar graphs. Now I want that my algorithm should categorize them according to some cluster it defines intuitively or explicitly. So it gives me a "n" number of different clusters for lets say 100 plots and then I can work on it or optimize it if possible. Please help. Thank you so much.

请先登录，再回答此问题。

回答（1 个）

Image Analyst
Image Analyst 2019-6-27
Perhaps you just want to threshold top get a binary image of each pressure range.
pressureRange1 = pressureImage >= lowThreshold & pressureImage <= highThreshold;
or perhaps you want to use imquantize(). Then you can call colormap() to colorize the quantized image.
  6 个评论
显示 4更早的评论
Image Analyst
Image Analyst 2019-6-29
Maybe you should look at image similarity metrics like ssim().
Abhishek Singh
Abhishek Singh 2019-6-29
Yes. This one looks like something that could help me. Though it gives a very high value for not so similar images I think I still can set high value like 0.95 as ssim value and that will also help me to avoid creaating different zones. I hope this will work. Thank you so much for the help.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Red 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by