Asymmetry between two signals

Suppose i have two signals x1(t) and x2(t), how do i measure asymmetry between them?? Any Matlab function or code will be helpful.

[dpb]

That greatly depends on what is meant by "asymmetry" and what kind of signals they might be characterized as.

[Image Analyst]

Yeah, I know symmetry of one signal about it's middle, but with two totally arbitrary signals, what does symmetry mean to you? Let's say one signal is a single Gaussian hump, and another is a train of 15 triangle pulses. Describe what the "symmetry between them" is. Or give two signals that are 100% symmetric to each other. What might those look like? Where is the axis of symmetry located?

Answer 1

[Image Analyst]

I have no idea what your definition of symmetry is in regards to two completely different and arbitrary signals. Is there any chance you're looking for the structural Similarity, SSIM: http://en.wikipedia.org/wiki/SSIM