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This paper contrasts two approaches to facial landmarking in 3D. The first approach is statistical in nature, and is based on modeling the shape of each feature with Gaussian mixtures. The advantage of this approach is the uniform treatment of landmarks. The second approach is a hybrid method to find the nose tip, which does not require learning, and is robust under adverse conditions. We demonstrate...
Deformations caused by facial expression variations complicate the task of 3D face registration which is vital for successful 3D face recognition systems. In this work, we propose to use a hierarchical component-based face registration technique capable of handling the difficulties caused by non-rigid nature of faces. Local components independently registered by the iterative closest point (ICP) algorithm...
Automatic localization of 3D facial features is important for face recognition, tracking, modeling and expression analysis. Methods developed for 2D images were shown to have problems working across databases acquired with different illumination conditions. Expression variations, pose variations and occlusions also hamper accurate detection of landmarks. In this paper we assess a fully automatic 3D...
This paper exhibits the performance drop in 3D face recognition in the presence of expression and proposes a new 3D face registration and recognition method based on facial regions. For fast alignment, a registration method based on iterative closest point (ICP) algorithm is used which employs average regional models (ARMs). Similarity scores obtained from alignment with separate regional models are...
In this study we designed a system that can track 3D motion and generate new pieces of motion, using a stereo camera setup. A dataset from some expressions of Turkish sign language is built using markers. In order to find the center of the markers and track their coordinates the correspondence problem had to be solved. Results of newly proposed marker detection and tracking algorithms are compared...
Interactive multimedia such as computer simulations and animations received increased attention over the years as supplementary teaching tools and have now become integral components of most engineering and science curriculums. We believe one way to boost the utility of such simulations and animations is to make them easier to use. In this paper, we describe a pen-based interface for constructing...
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