Creating a feature vector

2 次查看（过去 30 天）
sidra
sidra 2013-10-1
评论： sidra 2013-10-23
I have calculated texture, color and shape features on an image.But those just add up to 12 features. I read that people extract 1000 features and such. Could someone please explain to me how do i increase the number of features? And then how do i save them to form a feature vector?
  1 个评论
Laurent
Laurent 2013-10-1
It depends on which features you are interested in, for example mean, std, max intensity, min intensity, and so on. Obviously there are ways to extract 1000s of such features from images (or objects in these images), but it doesn't make much sense to do so without knowing the purpose.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Image Analyst
Image Analyst 2013-10-1
Nobody says you need to have thousands of features. In fact most times there aren't that many needed. You only need as many as you truly need, not more. Maybe you can get by with 1 or 2. Can you attach your image and say what you are trying to do with it?
  3 个评论
显示 1更早的评论
Image Analyst
Image Analyst 2013-10-7
I don't work in face recognition so you'll have to go here to see what kinds of feature vectors people are building: http://iris.usc.edu/Vision-Notes/bibliography/contentspeople.html#Face%20Recognition,%20Detection,%20Tracking,%20Gesture%20Recognition,%20Fingerprints,%20Biometrics You can make a feature vector simply by stringing together a bunch of numbers into a vector, where each number represents one of the measurements you have made, for example the skin color, the width of the mouth, the spacing between the eyes, etc.
sidra
sidra 2013-10-23
@Image Analyst : Thank you, the link was really helpful.

请先登录，再进行评论。

更多回答（0 个）

类别

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

标签

Community Treasure Hunt

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

Start Hunting!

Translated by