Computational Techniques for Human Smile Analysis by Hassan Ugail & Ahmad Ali Asad Aldahoud

Author:Hassan Ugail & Ahmad Ali Asad Aldahoud
Language: eng
Format: epub
ISBN: 9783030153816
Publisher: Springer International Publishing

3.2 A Computational Framework for Smile Weight Distribution

There are 18 distinct types of smiles and all of which must bear the three distinct phases mentioned above, though the effects pronounced on different parts of the face do differ in each case. For example, as discussed earlier, in a genuine smile the corners of the mouth are raised. And more significantly, the narrowing of the eye aperture happens. This results in the appearance of crows feet around the outer sides of the eyes.

As far as the dynamics of a smile is concerned, there are three distinct phases in any type of smile. They are, the onset (which starts from the neutral facial expression to the peak of zygomatic major muscle contraction), the apex (which refers to the time it takes for the smile to stay in the expressive state) and the offset (where the facial expression reaches from expressive state back to the neutral). The discussion here predominantly focusses on the dynamics of the apex part of the smile to categorise whether a smile is genuine or not. Our framework is based upon computing the dynamic geometry changes across the face, through the employment of optical flow analysis.

Fig. 3.1Description of the computational framework for the analysis of the smile dynamics

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.