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The two-phase movement object segmentation split

Author: ZhangZuo
Tutor: PanZhenKuan
School: Qingdao University
Course: Applied Computer Technology
Keywords: Optical flow calculation Splitting methods Split Bregman method The two-phase movement object segmentation
CLC: TP391.41
Type: Master's thesis
Year: 2010
Downloads: 8
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Abstract


Optical flow calculation is widely used in the field of computer vision, 3D reconstruction , there are many methods of optical flow calculation , the variational method is an effective method for computing optical flow field , the method is able to calculate dense optical flow field , but computationally intensive , time-consuming long, lower computational efficiency . Posed by the robust estimation of data items and TV (Total Variation) smoothness term energy functional , on the one hand , designed to quickly calculate split by the introduction of auxiliary variables , the original optimization problem into alternating optimization sub optimization problem, and contraction operator and the Gauss-Seidel iteration to achieve through a soft threshold formulas die for brightness, gradient , Hessian matrix , gradient , Laplacian and determinant of the Hessian matrix , a constant value to the data assuming compared traditional direct variational method and the proposed splitting methods ; on the other hand , the design of its quick calculation split Bregman method , realized by the introduction of auxiliary variables and iteration parameters , and the traditional direct variational method and split Bregman methods were compared . Moving Object Segmentation of great significance in the processing of video information , although you can directly with the traditional variational method , but does not have a real - time , this paper splitting methods applied to the two-phase motion segmentation model with traditional direct change points the method was compared with to prove splitting methods to effectively improve the computing speed . Optical flow calculation , and the two-phase movement object segmentation rapidly dividing conducted in-depth research , get some valuable results . Split method is still a potential field of research , worthy of a more in-depth discussion .

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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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