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Accuracy of the human face contour can help evaluate the facial orientation to retrieve facial features to identifying or verifying a human facial expression. Automatic extraction human face contour algorithm with high accuracy is necessary. In this paper, a novel flowchart of the face contour extraction algorithm was proposed for improving accuracy of face contours. Poisson Gradient Vector Flow (PGVF)...
A rapid algorithm for eye state detection is proposed in this paper. It takes use of gray scale characteristics of the eye and upper eyelid bending direction to distinguish the open and closed eye states. Circle similarity of region is proposed as an index to characterize the eye state. And a simple method based on the relation of curve and the straight line linking the two endpoints of curve is proposed...
In genetic programming (GP), evolving tree nodes separately would reduce the huge solution space. However, tree nodes are highly interdependent with respect to their fitness. In this paper, we propose a new GP framework, namely, instruction-matrix (IM)-based GP (IMGP), to handle their interactions. IMGP maintains an IM to evolve tree nodes and subtrees separately. IMGP extracts program trees from...
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