TITLE

HGOAAM: Facial Analysis by Active Appearance Model Optimized by Hybrid Genetic Algorithm

AUTHOR(S)
Sattar, Abdul; Seguier, Renaud
PUB. DATE
August 2009
SOURCE
Journal of Digital Information Management;Aug2009, Vol. 7 Issue 4, p193
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Facial analysis is one of the challenges of a Human Machine Interactive (HMI) system. It includes face alignment, pose estimation, face recognition, facial expression detection etc. This paper proposes an efficient optimization technique by the hybridization of genetic algorithm (GA) with gradient descent (GD) to make a robust, efficient and real time face alignment system. It employs 2.5D Active Appearance Model (AAM) for the face search, in which the face model is generated by taking 3D landmarks and 2D texture of the facial image. Facial large lateral movements requires to optimize 6DOF (Degrees of Freedom) pose parameters which make the facial search space of AAM nonconvex. This non-convex multidimensional search space requires an efficient optimization methodology. Gradient descent also known as deterministic optimization method can optimize the parameters as long as the search space remains convex. However in non-convex search space GA is able search face globally while GD can help GA to search face locally. In other words exploitation property of GD and exploration property of GA are combined to make an efficient optimization method. For this hybrid optimization we propose a gradient operator in GA, which functions in conjunction with the existing genetic operator of mutation. Thus it does not increase the computational cost of the system. We compare it with classical search algorithm by gradient descent and the hybrid optimization of GA with Simplex. Facial databases of SUPELEC'08, Pointing '04 and synthetic characters comprising of different facial poses are analyzed. Simulation results validate the efficiency, accuracy and robustness achieved.
ACCESSION #
44858842

 

Related Articles

  • EMOTION SPACE AS A PREDICTOR OF BINOCULAR RIVALRY. Ogawa, Tokihiro; Suzuki, Naoto // Perceptual & Motor Skills;Feb2000, Vol. 90 Issue 1, p291 

    Replicates and extends previous work on robustness of a two-dimensional structure of facial expressions of emotion under the condition of some perceptual ambiguity. Addition of facial photographs of different persons and by measuring participants' perception of stereoscopically presented faces;...

  • INTER-FEATURE TRANSFER OF AFTEREFFECTS: EVIDENCE OF ADAPTATION IN WHOLE FACE REPRESENTATIONS. Dosani, Maryam; Pancaroglu, Raika; Oruç, Ipek; Barton, Jason J. S. // UBC Medical Journal;Apr2011, Vol. 2 Issue 2, p48 

    Background: It is hypothesized that upright faces are represented holistically in the human visual system, with only local part-based feature representations for inverted faces. To test this, we used a novel inter-feature adaptation transfer technique to determine if face aftereffects resulted...

  • Seeing the Mean: Ensemble Coding for Sets of Faces. Haberman, Jason; Whitney, David // Journal of Experimental Psychology. Human Perception & Performan;Jun2009, Vol. 35 Issue 3, p718 

    We frequently encounter groups of similar objects in our visual environment: a bed of flowers, a basket of oranges, a crowd of people. How does the visual system process such redundancy? Research shows that rather than code every element in a texture, the visual system favors a summary...

  • Rapid influence of emotional scenes on encoding of facial expressions: an ERP study. Righart, Ruthger; de Gelder, Beatrice // Social Cognitive & Affective Neuroscience;Sep2008, Vol. 3 Issue 3, p270 

    In daily life, we perceive a person's facial reaction as part of the natural environment surrounding it. Because most studies have investigated how facial expressions are recognized by using isolated faces, it is unclear what role the context plays. Although it has been observed that the N170...

  • Processing Faces and Facial Expressions. Posamentier, Mette T.; Abdi, Hervé // Neuropsychology Review;Sep2003, Vol. 13 Issue 3, p113 

    This paper reviews processing of facial identity and expressions. The issue of independence of these two systems for these tasks has been addressed from different approaches over the past 25 years. More recently, neuroimaging techniques have provided researchers with new tools to investigate how...

  • Effects of exposure to facial expression variation in face learning and recognition. Liu, Chang; Chen, Wenfeng; Ward, James // Psychological Research;Nov2015, Vol. 79 Issue 6, p1042 

    Facial expression is a major source of image variation in face images. Linking numerous expressions to the same face can be a huge challenge for face learning and recognition. It remains largely unknown what level of exposure to this image variation is critical for expression-invariant face...

  • THE PERCEPTION AND THE RECOGNITION OF HUMAN FACES AND THEIR EMOTIONAL EXPRESSIONS - IN HEALTHY SUBJECTS AND SCHIZOPHRENIC PATIENTS.  // Activitas Nervosa Superior;2011, Vol. 53 Issue 1/2, p1 

    The article focuses on face identification, perception, and emotional expressions by patients suffering from Schizophrenia. It is stated that the recognition of human facial expressions, and their configurations is based on the creation of the polysemantic interpersonal relationships; and this...

  • Face-Processing Impairments and the Capgras Delusion. Young, Andrew W.; Reid, Ian; Wright, Simon; Hellawell, Deborah J. // British Journal of Psychiatry;May93, Vol. 162, p695 

    Investigations of two cases of the Capgras delusion found that both patients showed face-processing impairments encompassing identification of familiar faces, recognition of emotional facial expressions, and matching of unfamiliar faces. In neither case was there any impairment of recognition...

  • Thinking About the Future Moves Attention to the Right. Ouellet, Marc; Santiago, Julio; Funes, María Jesús; Lupiáñez, Juan // Journal of Experimental Psychology. Human Perception & Performan;Feb2010, Vol. 36 Issue 1, p17 

    Previous studies have shown that past and future temporal concepts are spatially represented (past being located to the left and future to the right in a mental time line). This study aims at further investigating the nature of this space-time conceptual metaphor, by testing whether the temporal...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics