How can i extract three texture features among the 22 using PCA?

Question

Arathy Das 2016-12-20

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/317603-how-can-i-extract-three-texture-features-among-the-22-using-pca

评论： Image Analyst 2016-12-20

I am doing project on lung cancer detection for that i have extracted texture features using GLCM. Among the 22 features i need only three. Can anyone please help me to do this using PCA?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Image Analyst 2016-12-20

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/317603-how-can-i-extract-three-texture-features-among-the-22-using-pca#answer_247943

在 MATLAB Online 中打开

If you have 22 PCA columns, then just extract the 3 you want as usual.

pca3 = pca22(:, 1:3); % or whatever.

If you have any followup questions, read this first and be much much more explicit in describing your situation.

2 个评论
显示无隐藏无

Arathy Das 2016-12-20

It is not that it has 22 columns sir.The output of extracting texture features of an image using GLCM is an 1x1 struct with 22 fields. This 22 fields are various texture information like autocorrelation,sum average etc. From this 22 features i need to extract three. How can it be done?

Image Analyst 2016-12-20

Are you using graycomatrix() or graycoprops()? How are you getting 22 things from either of those? I don't get that. My graycomatrix() demo is attached. Why don't you just call pca() and take the 3 most important components?

请先登录，再进行评论。