This paper examines the effect of detailing on different sections of a character’s face when it comes to how believable they are. The paper looks at how certain expressions and emotions can be more difficult to reproduce or are more prone to causing the Uncanny Valley Effect. The paper concludes that it is detailed animation of the upper part of the face that plays the most vital part, due to fact that its lack could “inhibit effective communication of emotion”. As such some emotions like anger or happiness are less affected by this while fear, sadness, disgust and surprise can be more difficult to replicate.
This research does have some limitations like the reliance of subjective data to measure the response of the subjects – it is mentioned that future studies should implement methods of measuring physiological changes in the subjects bodies to increase the accuracy of the data. Another thing to consider is the age of the article – 2011. This is important as recent developments in photogrammetry have led to the creation of some of the most realistic and accurate models that still struggle to appear believable.
As a character artist this research can help me better manage polygon counts and concentration of detail on the upper face while in some cases having me avoid trying to replicate certain emotions if time is a major factor of the project.
Tinwell, A., Grimshaw, M., Nabi, D. and Williams, A. (2011). Facial expression of emotion and perception of the Uncanny Valley in virtual characters. Computers in Human Behavior, 27(2), pp.741-749.