Matlab > WPT

grisly

小弟在做着final year project
但遇到了问题
读了有关的article,但不是很明白那作者怎么弄的.....
Title 是classification on EEG signal (EEG > 脑部的signal)
classification前要的是先extract features of the signal
然后那些features就是classification system的input

但问题来了....
当我用wavelet packet来做extract features时
由于wavelet packet不能直接extract frequency的components
所以我要用integration来得到features values
问题是.......
wavelet packet的output是那些奇怪的graph
请问下......用matlab来做integration
integration能够based on graph的吗??
平时我们做integration都是based on equation的

p/s: wavelet packet是把original signal decomposite to many level.....