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Geometry deformation under the constraint of two-dimensional images

Author: WangZuoZuo
Tutor: LiHaiZuo
School: East China Normal University
Course: Computer Software and Theory
Keywords: Image distortion Control point Geodesic distance Can view Moving Least Squares
CLC: TP391.41
Type: Master's thesis
Year: 2009
Downloads: 171
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Abstract


Image distortion is the image itself or sharp transitions between the different images , it is in image editing , animation , video and rich graphical user other fields has a very wide range of applications . With the development of computer technology , the use of computer makes it possible to achieve the image distortion , deformation algorithm along with the relevant start and gradually become an important research in computer graphics world. 2D image distortion is a research hotspot in recent years , there are fruitful research results , mainly in the following categories: free-form deformation method, based on the skeleton deformation method, based on dynamic deformation methods and the physical point-based deformation method , which based on point deformation method is simple and operational efficiency advantages, as the recent 2D image morphing mainstream research. In this paper, based on the point of the 2D image warping method is proposed based on the distance measured deformation polygon method : pending deformation for each point within the image to the constraint control point geodesic distance as weights determined using the moving least squares the deformed position of the point , to obtain the distortion results . Euclidean distance is the point of reflection of the space between the control point position , inevitably , to the weight of the Euclidean distance transform methods similar to the control point often leads to deformation of the vicinity of the error results . The geodesic distance reflects the image geometry constraint , reflecting point and control point position relationship between the inner Therefore, this algorithm can effectively avoid deformation of the result of this error appears. Experimental results show that the proposed method of visual deformation , local deformation and has the ability to modify the shape of the deformation effect is more natural and realistic.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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