61,397 Hits in 6.2 sec

Triangle-based approach to the detection of human face

Chiunhsiun Lin, Kuo-Chin Fan
2001 Pattern Recognition  
A robust and e$cient human face detection system that can detect multiple faces in complex backgrounds is presented in this paper. The proposed system consists of two primary parts.  ...  In addition to overcoming the problem of partial occlusion of mouth and sunglasses, the system can also detect faces from the side view.  ...  Summary In this paper, a triangle-based approach is presented to extract human faces embedded in photographs or images. The proposed system consists of two main parts.  ... 
doi:10.1016/s0031-3203(00)00075-3 fatcat:wgr3e6cwqnbxnkn7g3zdegc6iq

Intelligent Real-Time Facial Expression Recognition from Video Sequences based on Hybrid Feature Tracking Algorithms

Nehal O., Noha A., Fayez W.
2017 International Journal of Advanced Computer Science and Applications  
Moreover, our approach aims to increase the system accuracy by increasing the FER recognition accuracy of the most overlapped expressions while achieving low processing time.  ...  The features are extracted from tracking of facial landmarks.  ...  Moreover, using variance angles of human face may be used for training and testing the new approach.  ... 
doi:10.14569/ijacsa.2017.080139 fatcat:cjw4c4rlfrghhek2jlv2difham

Let me join you! Real-time F-formation recognition by a socially aware robot [article]

Hrishav Bakul Barua, Pradip Pramanick, Chayan Sarkar, Theint Haythi Mg
2020 arXiv   pre-print
Our proposed pipeline consists of -- a) a skeletal key points estimator (a total of 17) for the detected human in the scene, b) a learning model (using a feature vector based on the skeletal points) using  ...  detection of the formation and approach angle.  ...  ACKNOWLEDGMENT We would like to thank Mr. Sai Krishna Pathi of rebro University to provide us the source code of his work that we utilized for comparing performance of our system.  ... 
arXiv:2008.10078v1 fatcat:l3jzfbppprg7dosmjxh67ecqsu

Face Detection in Non-uniform Illumination Conditions by Using Color and Triangle-based Approach

Chiunhsiun Lin
2006 Proceedings of the 9th Joint Conference on Information Sciences (JCIS)  
The proposed scheme comprises two stages. The first stage adopts YES color and triangle-based segmentation to search potential face regions.  ...  In particular, the scheme significantly increases the execution speed of the face detection algorithm in complex backgrounds.  ...  In section 2, segmentation of potential face regions based on skin color segmentation in YES color space and triangle-based approach is described.  ... 
doi:10.2991/jcis.2006.198 dblp:conf/jcis/Lin06a fatcat:ojkvthorpbb3xj3xggav56su3q

An Automatic Deformation for Facial Smile using PSO Detection

2017 Journal of Electronics and Information Science  
The PSO algorithm is utilized to search the optimal position of rectangle containing face and eyes. The affine transformation is applied to warp related triangles to deform expression.  ...  To improve the convenience of triangulation based image warping algorithm, an automatic approach for facial expression deformation is presented.  ...  Then, feature extraction method will be used to detect the face and eyes position. Human face is rather special because it contains more details than other parts of the body.  ... 
doi:10.23977/jeis.2017.21006 fatcat:d5cena2sorblfi6evj3sq6mjmy

Combining rectangular and triangular image regions to perform real-time face detection

Hugo Proenca, Silvio Filipe
2008 2008 9th International Conference on Signal Processing  
At first, based on the computer graphics concept of "triangle mesh" we propose the notion of "triangular integral feature" to describe and model face properties.  ...  Among a large number of published approaches, one of the most relevant is the method proposed by Viola and Jones [18] to perform real-time face detection through a cascade schema of weak classifiers that  ...  Acknowledgements We acknowledge the financial support given by the Portuguese "FCT-Fundação para a Ciência e Tecnologia" and the European "FEDER" in the scope of the PTDC/EIA/69106/2006 research project  ... 
doi:10.1109/icosp.2008.4697274 fatcat:qsjchsiwzbbo5o44f6gknuhidm

Proposing a Novel Three Triangles Geometrical Approach for Face Detection on Occluded Facial Features

Bikash Lamsal, Noriko Kojima, Naofumi Matsumoto
2016 Journal of the Institute of Industrial Applications Engineers  
Face detection is one of the developing trends in the field of biometrics. A lot of face detection algorithm has been developed, but still the face detection rate haven't reached to 100%.  ...  This paper is associated with the novel approach for detecting the face and facial features from the images where the facial features are occluded.  ...  Introduction The face is the biometric identifier which is widely used in case of human recognition. The face detection have to be performed in order to recognize the face.  ... 
doi:10.12792/jiiae.4.192 fatcat:o3xvp574d5go5abfciekrbml34

Measurement of Face Recognizability for Visual Surveillance [chapter]

Hsi-Jian Lee, Yu-Cheng Tsao
2005 Lecture Notes in Computer Science  
In the first stage, based on a statistical background model, we apply the background subtraction approach to segment the foreground.  ...  Based on the features of the orientation distribution on the face regions, we collect the lines of the face with strong orientations.  ...  Feature-based bottom-up approach In the second category, the proposed method tries to find invariant features of face for detection.  ... 
doi:10.1007/11552499_32 fatcat:exkbz5cxpzbohbcjjsrm3ae7z4

Semantic 3D Face Mesh Simplification for Transmission and Visualization

Alessandro Colombo, Claudio Cusano, Raimondo Schettini
2006 2006 IEEE International Conference on Multimedia and Expo  
In this paper we propose an approach to semantic simplification of triangular meshes representing faces.  ...  In a first phase we detect salient regions using a 3D face detector based on curvature analysis and holistic classification.  ...  Once faces are detected, a bounding box approximating the volume of each face is passed to the simplification module. Our simplification algorithm is a vertex decimator based on Shroeder's approach.  ... 
doi:10.1109/icme.2006.262593 dblp:conf/icmcs/ColomboCS06 fatcat:ddryl2rj4fh6fn5aia52ribnoq

Shape Matching Based on Fully Automatic Face Detection on Triangular Meshes [chapter]

Wolfram von Funck, Holger Theisel, Hans-Peter Seidel
2006 Lecture Notes in Computer Science  
We tested our approach with several shape data bases (e.g. the Princeton Shape Benchmark) and achieved high rates of correct face detection.  ...  We do so by applying a 3D face detection approach on the mesh which consists of three steps: first, a local symmetry value is computed for each vertex.  ...  Our Approach -All Radii Up to now our face detection approach was based on a particular choice of the search radius r: this way faces of the approximate diameter 2 r are detected (or excluded) on a mesh  ... 
doi:10.1007/11784203_21 fatcat:5bobmft3lbc63f2mwskv66ikei

A Review on Triangle based Techniques in Biometric Gait Recognition

Monika Jhapate, Lalitesh Choudhary, Ravi Singh Pippal
2015 International Journal of Computer Applications  
This survey paper covers the current trends and method of Gait based surveillance system using triangle methods and compare them.  ...  Biometric system is an analysis of unique biological features of human being. The purpose is used for human security and identification.  ...  Approach No. of Persons under Surveillance CCR 1. Angels based gait detection 18 90% 2. An approach for human gait identification based on area of triangle 18 82% 3.  ... 
doi:10.5120/21550-4571 fatcat:gvd5t2fphfdpzmu4b7yrok7374

Facial geometric feature extraction based emotional expression classification using machine learning algorithms

Murugappan M, Mutawa A
2021 PLoS ONE  
The area of the triangle (AoT), Inscribed circle circumference (ICC), and the Inscribed circle area of a triangle (ICAT) are extracted as features to classify the facial emotions.  ...  A mathematical model has been applied to positions of eight virtual markers in a defined location on the subject's face in an automated way.  ...  Recently, AdaBoost cascade classifier employed in Haar-like features to detect human face in the scene efficiently [48] .  ... 
doi:10.1371/journal.pone.0247131 pmid:33600467 pmcid:PMC7891769 fatcat:iiv6eoz5yvbepfvulrew2oir2y

Method of Facial Geometric Feature Representation for Information Security Systems

Oleg Kalyta, Iurii Krak, Olexander Barmak, Waldemar Wójcik, Pavlo Radiuk
2022 International Workshop on Intelligent Information Technologies & Systems of Information Security  
The method is designed to automatically reflect the facial expressions of human emotions in the form of quantitative characteristics of geometric shapes.  ...  It uses software-generated landmarks for constructing specific geometric characteristics of the face, which serve as input data for the method.  ...  Further research will be devoted to detecting human faces from low-resolution or long-distance video cameras and creating appropriate information systems for efficient security surveillance.  ... 
dblp:conf/intelitsis/KalytaKBWR22 fatcat:xpurqln7ircnxdqnyb2h6avfiq

Face Segmentation under Unconstrained Scenes

Jing-wein Wang
2006 2006 IEEE International Conference on Multimedia and Expo  
Moreover, a face detection measure (FDM) criterion based on the distance between the expected and the detected eye-mouth triangle circumscribed circle areas is introduced to validate the performance of  ...  In this paper, an efficient approach by combining the novel wavelet-based feature template, the support vector machine (SVM) classifier, and the wavelet entropy filtering is presented to robustly detect  ...  criterion based on the distance between the expected and the detected eye-mouth triangle circumscribed circle areas to validate the performance of face detection.  ... 
doi:10.1109/icme.2006.262910 dblp:conf/icmcs/Wang06 fatcat:w4ax2pr3fva2zcps23ujzthb2q

Face detection in color images

Rein-Lien Hsu, M. Abdel-Mottaleb, A.K. Jain
2002 IEEE Transactions on Pattern Analysis and Machine Intelligence  
Our method detects skin regions over the entire image, and then generates face candidates based on the spatial arrangement of these skin patches.  ...  Human face detection is often the first step in applications such as video surveill:ance, human computer interface, face recognition, and image database management.  ...  Most approaches to eye and face localization [7, 131 are template based.  ... 
doi:10.1109/34.1000242 fatcat:kmk72omhrfdpvejanvaq7tyb5e
« Previous Showing results 1 — 15 out of 61,397 results