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Face Detection and Facial Feature Localization for multi-pose faces and complex background images
Dalarna University, School of Technology and Business Studies, Computer Engineering.
2011 (English)Independent thesis Advanced level (degree of Master (Two Years))Student thesis
Abstract [en]

The objective of this thesis work, is to propose an algorithm to detect the faces in a digital image with complex background. A lot of work has already been done in the area of face detection, but drawback of some face detection algorithms is the lack of ability to detect faces with closed eyes and open mouth. Thus facial features form an important basis for detection. The current thesis work focuses on detection of faces based on facial objects. The procedure is composed of three different phases: segmentation phase, filtering phase and localization phase. In segmentation phase, the algorithm utilizes color segmentation to isolate human skin color based on its chrominance properties. In filtering phase, Minkowski addition based object removal (Morphological operations) has been used to remove the non-skin regions. In the last phase, Image Processing and Computer Vision methods have been used to find the existence of facial components in the skin regions. This method is effective on detecting a face region with closed eyes, open mouth and a half profile face. The experiment’s results demonstrated that the detection accuracy is around 85.4% and the detection speed is faster when compared to neural network method and other techniques.

Place, publisher, year, edition, pages
Borlange, 2011. , 31 p.
Keyword [en]
Face Detection, Image Processing, Skin Color Segmentation, Image Morphology, Facial Object Based Method
URN: urn:nbn:se:du-5705OAI: diva2:519117
Available from: 2011-08-18 Created: 2011-08-18 Last updated: 2012-04-24Bibliographically approved

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