Identical Twins and Recognition.

Post No 14:
Human Face >> Science >> Biology >> Genetics

Identical Twins are not clones but result of single fertilized egg splitting into two separate embryos. In scientific terms it is referred as monozygomatic. 

It becomes very difficult to identify subtle differences that differentiates mirror like individual. If you really want to stress your identification skills then you must visit Twins Days Festival in Twinsburg, Ohio. 
Facial variation in genetically identical twins can be exaggerated by engaging them in separate environmental conditions.

http://ngm.nationalgeographic.com/2012/01/twins/schoeller-photography#/1

A famous book Identical: Portraits of Twins By Martin Schoeller (Author) 

Curious mind raises many questions such as, Can Biometrcs ID an Identical Twin?

But it is found that sometimes many twin faces confound various Facial Recognition software. The best performing algorithm has 17-18 percent equal error rate which should be  under 5 percent. Still, Scientists are studying relentlessly to solve this riddle. One of the paper is "Analysis of Facial Features in Identical Twins" by Brendan Klare, Alessandra A. Paulino, and Anil K. Jain. 

Although, Close friends and even Mom and Dad can be duped by their identical twins, But interesting fact is they can't dupe dogs? and they also have different fingerprints. Also, as identical twins get older, generally more differences in physical characteristics develop. 

Aspects of human face

6 September 2013
Post No: 4
Human Face >> General Information

There are many other aspects of human face. Most significant are:

1.Tool for living, Biological importance

Face is just an outer surface of head. Biologically, Head is the most significant body part. Skull gives the form and shape to face and thus can be considered as the framework of the face. Skull is casing of brain - integral part of nervous system, eyes - entire visual system, nose - entire olfactorysystem and doorways of respiratory system, ears - entire auditory system, mouth - entire gustatory system.  

2. Tool for communication, Impression and Expression

Human face is the most favored communication tool inseparably associated with his emotions. Facial expression comes from the squashing and stretching of facial muscles which conveys emotions. The facial impression is observed by perception. It is psychological evaluation based on look of personality despite of internal details, thought process. By nature, facial impression may be biased as perception is subjective, synthesis based on personal thoughts and experiences. So sometimes it becomes controversial.

3.Tool for identity, Biometric, tool for identification

We come in this world with a face and everybody recognizes us with that face. Every person continuously refines his own face recognizing methodology and builds and modifies his own database of human faces in memory. Each brain in this world is an independent system. Based on uniqueness of features many biometric philosophies were developed based on retinal identification, ear Pattern and facial structure. Thus face has become premier tool of identification.