3D facial similarity comparison in shape space

2015 ◽  
Vol 23 (4) ◽  
pp. 1138-1145 ◽  
Author(s):  
赵俊莉 ZHAO Jun-li ◽  
武仲科 WU Zhong-ke ◽  
刘翠婷 LIU Cui-ting ◽  
段福庆 DUAN Fu-qing ◽  
周明全 ZHOU Ming-quan ◽  
...  
Keyword(s):  
Shape Space ◽  
Similarity Comparison ◽  
Facial Similarity

Haunted by a Doppelgänger

2014 ◽  
Vol 61 (1) ◽  
pp. 12-22 ◽  
Author(s):  
Bettina von Helversen ◽  
Stefan M. Herzog ◽  
Jörg Rieskamp
Keyword(s):  
Relevant Information ◽  
Psychological Research ◽  
Decision Makers ◽  
Human Judgment ◽  
Rule Based ◽  
New Employees ◽  
High Performing ◽  
Facial Similarity ◽  
Similarity Effect ◽  
Judgment Strategy

Judging other people is a common and important task. Every day professionals make decisions that affect the lives of other people when they diagnose medical conditions, grant parole, or hire new employees. To prevent discrimination, professional standards require that decision makers render accurate and unbiased judgments solely based on relevant information. Facial similarity to previously encountered persons can be a potential source of bias. Psychological research suggests that people only rely on similarity-based judgment strategies if the provided information does not allow them to make accurate rule-based judgments. Our study shows, however, that facial similarity to previously encountered persons influences judgment even in situations in which relevant information is available for making accurate rule-based judgments and where similarity is irrelevant for the task and relying on similarity is detrimental. In two experiments in an employment context we show that applicants who looked similar to high-performing former employees were judged as more suitable than applicants who looked similar to low-performing former employees. This similarity effect was found despite the fact that the participants used the relevant résumé information about the applicants by following a rule-based judgment strategy. These findings suggest that similarity-based and rule-based processes simultaneously underlie human judgment.

The Effect of Human Avatars' Facial Similarity on Users' Sense of Co-presence

2015 ◽  
Author(s):  
Doo-Hwang Lee ◽  
Joung-Huem Kwon ◽  
Young-Nam Seo ◽  
Bum-Jae You
Keyword(s):  
Facial Similarity

Simple shape space for 3D face registration

2009 ◽  
Author(s):  
Andrej Košir ◽  
Igor Perkon ◽  
Drago Bracun ◽  
Jurij Tasic ◽  
Janez Mozina
Keyword(s):  
Shape Space ◽  
Simple Shape ◽  
3D Face

scholarly journals Apolar and polar transitions drive the conversion between amoeboid and mesenchymal shapes in melanoma cells

2015 ◽  
Vol 26 (22) ◽  
pp. 4163-4170 ◽  
Author(s):  
Sam Cooper ◽  
Amine Sadok ◽  
Vicky Bousgouni ◽  
Chris Bakal
Keyword(s):  
Quantitative Imaging ◽  
Three Dimensional ◽  
Shape Space ◽  
Melanoma Cells ◽  
Collagen Matrices ◽  
Morphological Heterogeneity ◽  
Rho Family Gtpases ◽  
Metastatic Process ◽  
Rho Family ◽  
Single Living

Melanoma cells can adopt two functionally distinct forms, amoeboid and mesenchymal, which facilitates their ability to invade and colonize diverse environments during the metastatic process. Using quantitative imaging of single living tumor cells invading three-dimensional collagen matrices, in tandem with unsupervised computational analysis, we found that melanoma cells can switch between amoeboid and mesenchymal forms via two different routes in shape space—an apolar and polar route. We show that whereas particular Rho-family GTPases are required for the morphogenesis of amoeboid and mesenchymal forms, others are required for transitions via the apolar or polar route and not amoeboid or mesenchymal morphogenesis per se. Altering the transition rates between particular routes by depleting Rho-family GTPases can change the morphological heterogeneity of cell populations. The apolar and polar routes may have evolved in order to facilitate conversion between amoeboid and mesenchymal forms, as cells are either searching for, or attracted to, particular migratory cues, respectively.

A STUDY OF IMMUNITY BASED ON PENNA AGING MODEL

2006 ◽  
Vol 17 (04) ◽  
pp. 479-492
Author(s):  
MINGFENG HE ◽  
SHUANG WANG
Keyword(s):  
Immune System ◽  
Evolutionary Model ◽  
Shape Space ◽  
Aging Model ◽  
Space Model ◽  
Model Based ◽  
Penna Model

This paper describes an evolutionary model based on sexual Penna model and shape space model with infection and immunity. Each individual is represented by Penna model with an immune system. In order to study how the infection and immunity influence the survival process, we modify the Verhulst factor. Then, we present the results of our simulations, and discuss the evolution of population and the effect of immunity respectively. In addition, we study the effect of the memory of the immune system and the effect of vaccination under different conditions.

scholarly journals Almost Local Metrics on Shape Space of Hypersurfaces inn-Space

2012 ◽  
Vol 5 (1) ◽  
pp. 244-310 ◽  
Author(s):  
Martin Bauer ◽  
Philipp Harms ◽  
Peter W. Michor
Keyword(s):  
Shape Space
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