Research on the face pattern space division in images based on their different views

2014 ◽  
Author(s):  
Zhixiang He ◽  
Xiaoqing Ding ◽  
Chi Fang ◽  
Yanwei Wang
Keyword(s):  
Space Division ◽  
Pattern Space ◽  
The Face ◽  
Face Pattern

scholarly journals Importance of Facial Pattern to Sexual Selection in Golden-Winged Warbler (Vermivora Chrysoptera)

The Auk ◽  
2006 ◽  
Vol 123 (4) ◽  
pp. 962-966 ◽  
Author(s):  
Ellen R. Leichty ◽  
James W. Grier
Keyword(s):  
Sexual Selection ◽  
Vermivora Chrysoptera ◽  
The Face ◽  
Facial Pattern ◽  
F1 Generation ◽  
Face Pattern

Abstract The importance of the black facial pattern in sexual selection in Golden-winged Warblers (Vermivora chrysoptera) was evaluated through experimental plumage modification. We lightened the throat patch and eye mask with hair bleach, which essentially created artificial Brewster's Warbler (F1 generation of Golden-winged Warbler × Blue-winged Warbler [V. pinus]) plumage phenotypes. Experimental males lost their original territories and failed to obtain mates. We concluded that there is sexual selection against the Brewster's facial pattern. Sexual selection attributable to the face pattern may explain the apparent greater effect of hybridization on Golden-winged Warblers than on Blue-winged Warblers. Importancia del Patrón Facial en la Selección Sexual de Vermivora chrysoptera

Frequent Pattern Mining Based on Pattern Space Division in Map/Reduce Cluster

2012 ◽  
Vol 588-589 ◽  
pp. 2038-2041
Author(s):  
Qian Liu ◽  
Ming Chen
Keyword(s):  
Pattern Mining ◽  
Recursive Algorithm ◽  
Frequent Pattern Mining ◽  
Frequent Pattern ◽  
Map Reduce ◽  
Data Set ◽  
Combinatorial Explosion ◽  
Space Division ◽  
Pattern Space ◽  
The Many

By means of pattern space division and based on Map/Reduce, the problem of processing the many-to-many corresponding relationship between the data set and the patterns set is converted to the problem of processing the many-to-many corresponding relationship between the data subsets and the pattern subspaces associated with the frequent 1-itemsets. Thus, the scale of the intermediate key/value pairs set is reduced so dramatically that the problem of single Map node bottleneck which results from combinatorial explosion of candidate patterns space is avoided. Over three rounds of Map/Reduce tasks, the pattern space is constructed and divided, the filtering rules is established and employed, father more, the mining of frequent patterns is realized in each pattern subspace independently. By making the best of both the universal trait of the entire pattern space and the individuality of each pattern subspace, the optimized non-recursive algorithm is designed and implemented to improve the efficiency of mining phase.

scholarly journals Assessing the potential information content of multicomponent visual signals: a machine learning approach

2015 ◽  
Vol 282 (1802) ◽  
pp. 20142284 ◽  
Author(s):  
William L. Allen ◽  
James P. Higham
Keyword(s):  
Visual Signals ◽  
Visual Signal ◽  
Species Identity ◽  
Machine Learning Approach ◽  
The Face ◽  
Species Groups ◽  
Calibrated Images ◽  
Discriminant Function Analyses ◽  
Face Pattern

Careful investigation of the form of animal signals can offer novel insights into their function. Here, we deconstruct the face patterns of a tribe of primates, the guenons (Cercopithecini), and examine the information that is potentially available in the perceptual dimensions of their multicomponent displays. Using standardized colour-calibrated images of guenon faces, we measure variation in appearance both within and between species. Overall face pattern was quantified using the computer vision ‘eigenface’ technique, and eyebrow and nose-spot focal traits were described using computational image segmentation and shape analysis. Discriminant function analyses established whether these perceptual dimensions could be used to reliably classify species identity, individual identity, age and sex, and, if so, identify the dimensions that carry this information. Across the 12 species studied, we found that both overall face pattern and focal trait differences could be used to categorize species and individuals reliably, whereas correct classification of age category and sex was not possible. This pattern makes sense, as guenons often form mixed-species groups in which familiar conspecifics develop complex differentiated social relationships but where the presence of heterospecifics creates hybridization risk. Our approach should be broadly applicable to the investigation of visual signal function across the animal kingdom.

scholarly journals Subjective facial analysis and its correlation with dental relationships

2017 ◽  
Vol 22 (2) ◽  
pp. 87-94 ◽  
Author(s):  
Gustavo Silva Siécola ◽  
Leopoldino Capelozza Filho ◽  
Diego Coelho Lorenzoni ◽  
Guilherme Janson ◽  
José Fernando Castanha Henriques
Keyword(s):  
Pattern Classification ◽  
Morphological Analysis ◽  
Open Bite ◽  
Anterior Open Bite ◽  
Facial Analysis ◽  
The Face ◽  
Facial Pattern ◽  
The Relationship ◽  
Face Pattern

ABSTRACT INTRODUCTION: Subjective facial analysis is a diagnostic method that provides morphological analysis of the face. Thus, the aim of the present study was to compare the facial and dental diagnoses and investigate their relationship. METHODS: This sample consisted of 151 children (7 to 13 years old), without previous orthodontic treatment, analyzed by an orthodontist. Standardized extraoral and intraoral photographs were taken for the subjective facial classification according to Facial Pattern classification and occlusal analyses. It has been researched the occurrence of different Facial Patterns, the relationship between Facial Pattern classification in frontal and profile views, the relationship between Facial Patterns and Angle classification, and between anterior open bite and Long Face Pattern. RESULTS: Facial Pattern I was verified in 64.24% of the children, Pattern II in 21.29%, Pattern III in 6.62%, Long Face Pattern in 5.96% and Short Face Pattern in 1.99%. A substantial strength of agreement of approximately 84% between frontal and profile classification of Facial Pattern was observed (Kappa = 0.69). Agreement between the Angle classification and the Facial Pattern was seen in approximately 63% of the cases (Kappa = 0.27). Long Face Pattern did not present more open bite prevalence. CONCLUSION: Facial Patterns I and II were the most prevalent in children and the less prevalent was the Short Face Pattern. A significant concordance was observed between profile and frontal subjective facial analysis. There was slight concordance between the Facial Pattern and the sagittal dental relationships. The anterior open bite (AOB) was not significantly prevalent in any Facial Pattern.

AN ERP-BASED BCI USING AN ODDBALL PARADIGM WITH DIFFERENT FACES AND REDUCED ERRORS IN CRITICAL FUNCTIONS

2014 ◽  
Vol 24 (08) ◽  
pp. 1450027 ◽  
Author(s):  
JING JIN ◽  
BRENDAN Z. ALLISON ◽  
YU ZHANG ◽  
XINGYU WANG ◽  
ANDRZEJ CICHOCKI
Keyword(s):  
Event Related Potentials ◽  
Oddball Paradigm ◽  
Repetition Effects ◽  
New Approach ◽  
Computer Interfaces ◽  
Single Face ◽  
The Face ◽  
Related Potentials ◽  
The Stability ◽  
Face Pattern

Recent research has shown that a new face paradigm is superior to the conventional "flash only" approach that has dominated P300 brain–computer interfaces (BCIs) for over 20 years. However, these face paradigms did not study the repetition effects and the stability of evoked event related potentials (ERPs), which would decrease the performance of P300 BCI. In this paper, we explored whether a new "multi-faces (MF)" approach would yield more distinct ERPs than the conventional "single face (SF)" approach. To decrease the repetition effects and evoke large ERPs, we introduced a new stimulus approach called the "MF" approach, which shows different familiar faces randomly. Fifteen subjects participated in runs using this new approach and an established "SF" approach. The result showed that the MF pattern enlarged the N200 and N400 components, evoked stable P300 and N400, and yielded better BCI performance than the SF pattern. The MF pattern can evoke larger N200 and N400 components and more stable P300 and N400, which increase the classification accuracy compared to the face pattern.

Student Participation, Interaction, and Regulation in a Computer-Mediated Communication Environment: A Qualitative Study

1996 ◽  
Vol 14 (3) ◽  
pp. 243-268 ◽  
Author(s):  
Lorena F. Ruberg ◽  
David M. Moore ◽  
C. David Taylor
Keyword(s):  
Computer Mediated Communication ◽  
Mediated Communication ◽  
Face To Face ◽  
Computer Mediated ◽  
The Face ◽  
Computer Based ◽  
Multiple Threads ◽  
Level Of Thinking ◽  
Face Pattern

This case study provides a description of student interaction and participation within a computer-mediated environment in an experimental offering of a plant science lab course. Based on structured classroom observation, interviews, and surveys with students and teachers this study examines 1) how a CMC pattern of discourse differs from a face-to-face pattern of discussion in a class setting; 2) whether students participating in a CMC activity produce a discourse that reflects the level of thinking and sharing of ideas desired by the instructor; and 3) how the computer-based interface facilitates and/or inhibits communication between students. This study shows that the CMC-based activities offers an alternative pattern of interaction which differs from the face-to-face pattern in some, but not all ways. The CMC discourse encourages experimentation, sharing of early ideas, increased and more distributed participation, and collaborative thinking. However, for some students the CMC activities are confusing and inhibiting because of the lack of social cues and multiple threads of simultaneous topics—the same features that appeal to other students. Successful use of CMC activities requires a classroom social environment that encourages peer interaction. Equally important is the selection of engaging tasks that are structured enough to diminish confusion but still allow spontaneity and experimentation. Teachers also need to find ways to directly link the CMC discussions to prior and upcoming learning activities so that students will see the value in creating a discourse that they will want to refer to and use in other class activities.

scholarly journals Facial pattern of patients with post-foramen incisor cleft

2012 ◽  
Vol 17 (5) ◽  
pp. 35-42
Author(s):  
Leopoldino Capelozza Filho ◽  
Rodrigo Silva Caldas ◽  
Rita de Cássia Moura Carvalho Lauris ◽  
Arlete de Oliveira Cavassan
Keyword(s):  
Cleft Palate ◽  
Orthodontic Treatment ◽  
Facial Growth ◽  
Cross Sectional ◽  
The Face ◽  
Facial Pattern ◽  
Morphologic Analysis ◽  
Low Prevalence ◽  
Anterior Posterior ◽  
Face Pattern

OBJECTIVE: The assessment and establishment of the facial growth pattern for patients with a cleft palate. MATERIAL: This cross-sectional retrospective study was based on front and profile photos of a sample of 71 patients at the HRAC-USP, 22 males and 49 females, Brazilians, young adults, with a mean age of 17 years 8 months, without previous orthodontic treatment and no associated syndromes. The method was the subjective facial diagnosis based on technical concepts, that is, the qualitative morphologic analysis of the face through clinical examination. Individuals were classified as Pattern I, II, III, Long Face or Short Face. RESULTS: The distribution found with the frontal morphologic analysis was: Pattern I (69%), II (6%), III (7%), Long (18%) and Short (0%). As for the profile morphologic analysis, the distribution was: Pattern I (35%), II (38%), III (10%), Long (17%) and Short (0%).The distribution observed in the frontal analysis was very positive, since individuals Pattern I prevailed. For the profile evaluation, the anterior-posterior dysplasias were essentially shown, significantly increasing their participation. Long Face Pattern maintained a balance in both ratings and Short Face Pattern was not found in the sample used, probably related to the low prevalence in the general population. CONCLUSION: The prevalence of different Facial Patterns for patients with cleft palate was similar to that found in individuals without cleft.

Phases in the Representation of Intraobject Spatial Relations of the Face as Precursors to Literacy: A Testable Hypothesis Engendered by Neolithic Art

1990 ◽  
Vol 71 (1) ◽  
pp. 323-333
Author(s):  
Anneliese A. Pontius
Keyword(s):  
New Guinea ◽  
Spatial Relations ◽  
Literacy Skills ◽  
Testable Hypothesis ◽  
Acquired Dyslexia ◽  
The Face ◽  
Ultimate Attainment ◽  
Potential Use ◽  
Face Pattern ◽  
Relational Representation

An hypothesis is discussed on the emergence of intrapattern spatial relational representation, one prerequisite for ultimate attainment of literacy skills. The hypothesis is testable, e.g., by evaluating potential phases in preschoolers' drawings of the face pattern or of analogous subtle spatial relations within a pattern. The hypothesis was engendered by an analysis of various face patterns engraved on an ancient stone with a “neolithic” face configuration from the Western Highlands of New Guinea. One heuristic value of the present study lies in its potential use for specific refinement of remedial assistance in the attainment of subtle intrapattern representation of spatial relations either in preschoolers or in developmental as well as in acquired dyslexia.

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