Detection and Extraction of Moving Object in Intelligent Surveillance System

2013 ◽  
Vol 401-403 ◽  
pp. 1027-1030
Author(s):  
Wen Hua Qiu ◽  
Zhen Zhen Qiu ◽  
Liang Wang
Keyword(s):  
Level Set Method ◽  
Level Set ◽  
Surveillance System ◽  
Object Segmentation ◽  
Narrow Band ◽  
Segmentation Result ◽  
Intelligent Surveillance ◽  
System A ◽  
Level Set Segmentation ◽  
Video Frames

To solve the low automatic degree and low accurate alarm rate in the traditional intelligent surveillance system, a motion object segmentation algorithm based on level set method is proposed and implemented. The algorithm gains the primal contour curve by luminance difference between the video frames, and sets the curve as the primal zero level set. Then the narrow band level set algorithm is used to evolve the curve until achieving the segmentation result. Experimental results show that this method can greatly save the level set segmentation time and increase the detecting efficiency.

Optimization of Level Set Segmentation with Nonlinear Coherent Diffusion

2013 ◽  
Vol 787 ◽  
pp. 896-901
Author(s):  
Yong Hui Gao ◽  
Sheng Zheng Wang ◽  
Jie Yang
Keyword(s):  
Image Segmentation ◽  
Level Set Method ◽  
Level Set ◽  
Experimental Results ◽  
Segmentation Result ◽  
Gaussian Filter ◽  
Robust Method ◽  
Level Set Segmentation ◽  
Fine Structures ◽  
Spatially Varying

Level set method is convenient in image segmentation for the stabilization and veracity. Gaussian filter is usually taken as a preprocess to reduce the influence of weak edges due to noises, but the disadvantage is obvious: blur fine structures specially the important boundaries and lead to inaccurate segmentation result. This paper introduces a robust method which filters the images with a Nonlinear Coherent Diffusion (NCD) to accelerate the evolution of level set in a spatially varying manner. Experimental results show the performance of the proposed method in improving precision of segmentation.

Hierarchical median narrow band for level set segmentation of cervical cell nuclei

Measurement ◽  
2021 ◽  
pp. 109232
Author(s):  
Alan M. Braga ◽  
Regis C.P. Marques ◽  
Fátima N.S. Medeiros ◽  
Jeová F.S. Rocha Neto ◽  
Andrea G.C. Bianchi ◽  
...  
Keyword(s):  
Level Set ◽  
Narrow Band ◽  
Cell Nuclei ◽  
Cervical Cell ◽  
Level Set Segmentation

scholarly journals A Narrow-Band Level Set Method Applied to EIT in Brain for Cryosurgery Monitoring

2006 ◽  
Vol 53 (11) ◽  
pp. 2257-2264 ◽  
Author(s):  
M. Soleimani ◽  
O. Dorn ◽  
W.R.B. Lionheart
Keyword(s):  
Level Set Method ◽  
Level Set ◽  
Narrow Band

A Novel Multiphase Level Set Method to Image Segmentation Combined with Edge-Link Method

2013 ◽  
Vol 850-851 ◽  
pp. 839-843
Author(s):  
Hong Jiang Wu ◽  
Hai Yan Zhao ◽  
Jin Meng ◽  
Jing Zhao
Keyword(s):  
Image Segmentation ◽  
Level Set Method ◽  
Level Set ◽  
Human Motion ◽  
Experimental Results ◽  
Zero Level ◽  
Level Set Segmentation ◽  
Initial Zero

An improved level set PDE based on the Chan-Vese multiphase level set method is proposed. Because the segmentation results is well influenced by the initial zero level set, we use the method based on Edge-Link to obtain initial zero level set of the proposed multiphase level set segmentation model. Experimental results of ambiguous edges in human motion image suggest the efficiency and accuracy of the algorithm in its segmentation operations.

Topology Optimization of Total Femur Structure: Application of Parameterized Level Set Method Under Geometric Constraints

2015 ◽  
Vol 138 (1) ◽  
Author(s):  
Xiaowei Deng ◽  
Yingjun Wang ◽  
Jinhui Yan ◽  
Tao Liu ◽  
Shuting Wang
Keyword(s):  
Topology Optimization ◽  
Level Set Method ◽  
Level Set ◽  
Narrow Band ◽  
Geometric Constraints ◽  
Contour Method ◽  
Viable Option ◽  
Level Set Function ◽  
Set Function ◽  
Constraint Level

Optimization of the femur prosthesis is a key issue in femur replacement surgeries that provide a viable option for limb salvage rather than amputation. To overcome the drawback of the conventional techniques that do not support topology optimization of the prosthesis design, a parameterized level set method (LSM) topology optimization with arbitrary geometric constraints is presented. A predefined narrow band along the complex profile of the original femur is preserved by applying the contour method to construct the level set function, while the topology optimization is carried out inside the cavity. The Boolean R-function is adopted to combine the free boundary and geometric constraint level set functions to describe the composite level set function of the design domain. Based on the minimum compliance goal, three different designs of 2D femur prostheses subject to the target cavity fill ratios 34%, 54%, and 74%, respectively, are illustrated.

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