dept. of visual contents, dongseo university 2008. 11. 24 seung il han [email protected]
DESCRIPTION
A visual surveillance using real-time curve evolution based on the level-set method and pan-tilt camera. Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han [email protected]. Outline. Objective Method of Real-time curve evolution - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han hs12@dit.dongseo.ac.kr](https://reader035.vdocuments.us/reader035/viewer/2022062807/56815143550346895dbf5fcf/html5/thumbnails/1.jpg)
A visual surveillance using real-time curve evolution based on the level-set method and pan-
tilt camera
Dept. of Visual Contents, Dongseo University
2008. 11. 24
Seung Il Han
![Page 2: Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han hs12@dit.dongseo.ac.kr](https://reader035.vdocuments.us/reader035/viewer/2022062807/56815143550346895dbf5fcf/html5/thumbnails/2.jpg)
Outline
23年 4月 21日INSTITUTE OF AMBIENT INTELIGENT, Han Seung Il, Dongseo Univ, E-mail : [email protected]
2
1. Objective2. Method of Real-time curve evolution
1. Composition of real-time curve evolution2. Advanced curve evolution method
3. The proposed system1. Binary process2. Active contour
4. Experiment5. Conclusion6. REFERENCE
![Page 3: Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han hs12@dit.dongseo.ac.kr](https://reader035.vdocuments.us/reader035/viewer/2022062807/56815143550346895dbf5fcf/html5/thumbnails/3.jpg)
Objective
23年 4月 21日3 INSTITUTE OF AMBIENT INTELIGENT, Han Seung Il, Dongseo Univ, E-mail : [email protected]
< Pan&Tilt Camera >
< Result of subtraction >
< Level Set > < Proposed >
![Page 4: Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han hs12@dit.dongseo.ac.kr](https://reader035.vdocuments.us/reader035/viewer/2022062807/56815143550346895dbf5fcf/html5/thumbnails/4.jpg)
Image subtraction
23年 4月 21日4 INSTITUTE OF AMBIENT INTELIGENT, Han Seung Il, Dongseo Univ, E-mail : [email protected]
< Near frame subtraction >< Background subtraction >
![Page 5: Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han hs12@dit.dongseo.ac.kr](https://reader035.vdocuments.us/reader035/viewer/2022062807/56815143550346895dbf5fcf/html5/thumbnails/5.jpg)
23年 4月 21日5
1. Method of Real-time curve evolution
INSTITUTE OF AMBIENT INTELIGENT, Han Seung Il, Dongseo Univ, E-mail : [email protected]
![Page 6: Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han hs12@dit.dongseo.ac.kr](https://reader035.vdocuments.us/reader035/viewer/2022062807/56815143550346895dbf5fcf/html5/thumbnails/6.jpg)
Composition of real-time curve evolution
23年 4月 21日6 INSTITUTE OF AMBIENT INTELIGENT, Han Seung Il, Dongseo Univ, E-mail : [email protected]
}\)x(x|x{ DythatsuchNyandLin
})x(\x|x{ ythatsuchNyandDLout
ntpoiteriorinanisif
Lif
Lif
tpoinexterioranisif
xxx
x
in
out
3
1
1
3
1
0
1
F Interior : ,
Lin :
Lout :
Exterior :
C :
1F
1F
3
3
1
0
1
outLF
x0(x) inLF
x0(x)
![Page 7: Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han hs12@dit.dongseo.ac.kr](https://reader035.vdocuments.us/reader035/viewer/2022062807/56815143550346895dbf5fcf/html5/thumbnails/7.jpg)
Process of real-time curve evolution
23年 4月 21日7 INSTITUTE OF AMBIENT INTELIGENT, Han Seung Il, Dongseo Univ, E-mail : [email protected]
< Advanced curve evolution >
No
No
Yes Yes
No
No
Yes
Scan Index in Two Line
Switch_in() Switch_out()
Eliminate redundantLout,Lin
Line end
Iteration
Next Index
1F
1
1F
1
![Page 8: Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han hs12@dit.dongseo.ac.kr](https://reader035.vdocuments.us/reader035/viewer/2022062807/56815143550346895dbf5fcf/html5/thumbnails/8.jpg)
23年 4月 21日8
2. The Proposed system
INSTITUTE OF AMBIENT INTELIGENT, Han Seung Il, Dongseo Univ, E-mail : [email protected]
![Page 9: Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han hs12@dit.dongseo.ac.kr](https://reader035.vdocuments.us/reader035/viewer/2022062807/56815143550346895dbf5fcf/html5/thumbnails/9.jpg)
The proposed system
23年 4月 21日9 INSTITUTE OF AMBIENT INTELIGENT, Han Seung Il, Dongseo Univ, E-mail : [email protected]
< Flow chart >
Image frame
Threshold movement
Movement
Active contour
Blob center in the range
Pen & Tilt camera
Pause subtraction & contour tracking
Loop
Yes
No
No
Yes
Yes
Levelset based tracking methodSubtraction
![Page 10: Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han hs12@dit.dongseo.ac.kr](https://reader035.vdocuments.us/reader035/viewer/2022062807/56815143550346895dbf5fcf/html5/thumbnails/10.jpg)
The proposed system
23年 4月 21日10 INSTITUTE OF AMBIENT INTELIGENT, Han Seung Il, Dongseo Univ, E-mail : [email protected]
![Page 11: Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han hs12@dit.dongseo.ac.kr](https://reader035.vdocuments.us/reader035/viewer/2022062807/56815143550346895dbf5fcf/html5/thumbnails/11.jpg)
When to move the camera
23年 4月 21日11 INSTITUTE OF AMBIENT INTELIGENT, Han Seung Il, Dongseo Univ, E-mail : [email protected]
< Pan & Tilt control>
![Page 12: Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han hs12@dit.dongseo.ac.kr](https://reader035.vdocuments.us/reader035/viewer/2022062807/56815143550346895dbf5fcf/html5/thumbnails/12.jpg)
23年 4月 21日12
3. Experiment & Conclusion
INSTITUTE OF AMBIENT INTELIGENT, Han Seung Il, Dongseo Univ, E-mail : [email protected]
![Page 13: Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han hs12@dit.dongseo.ac.kr](https://reader035.vdocuments.us/reader035/viewer/2022062807/56815143550346895dbf5fcf/html5/thumbnails/13.jpg)
Experiment
23年 4月 21日13 INSTITUTE OF AMBIENT INTELIGENT, Han Seung Il, Dongseo Univ, E-mail : [email protected]
< The proposed method >
< Conventional method >
![Page 14: Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han hs12@dit.dongseo.ac.kr](https://reader035.vdocuments.us/reader035/viewer/2022062807/56815143550346895dbf5fcf/html5/thumbnails/14.jpg)
Experiment
23年 4月 21日14 INSTITUTE OF AMBIENT INTELIGENT, Han Seung Il, Dongseo Univ, E-mail : [email protected]
< Continuous frame of proposed case >
![Page 15: Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han hs12@dit.dongseo.ac.kr](https://reader035.vdocuments.us/reader035/viewer/2022062807/56815143550346895dbf5fcf/html5/thumbnails/15.jpg)
Experiment
23年 4月 21日15 INSTITUTE OF AMBIENT INTELIGENT, Han Seung Il, Dongseo Univ, E-mail : [email protected]
< Continuous frame of conventional case>
![Page 16: Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han hs12@dit.dongseo.ac.kr](https://reader035.vdocuments.us/reader035/viewer/2022062807/56815143550346895dbf5fcf/html5/thumbnails/16.jpg)
Experiment
23年 4月 21日16 INSTITUTE OF AMBIENT INTELIGENT, Han Seung Il, Dongseo Univ, E-mail : [email protected]
< Center point in proposed case > < Center point in conventional case >
![Page 17: Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han hs12@dit.dongseo.ac.kr](https://reader035.vdocuments.us/reader035/viewer/2022062807/56815143550346895dbf5fcf/html5/thumbnails/17.jpg)
Conclusion
23年 4月 21日17 INSTITUTE OF AMBIENT INTELIGENT, Han Seung Il, Dongseo Univ, E-mail : [email protected]
![Page 18: Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han hs12@dit.dongseo.ac.kr](https://reader035.vdocuments.us/reader035/viewer/2022062807/56815143550346895dbf5fcf/html5/thumbnails/18.jpg)
References [1] Yonggang Shi, William Clem Karl, “A Real-Time Algorithm for
the Approximation of Level-Set-Based Curve Evolution”, vol.17, no.5, pp. 645-656, IEEE transactions on image processing, May 2008.
[2] S.Osher and J.Sethian, “Fronts propagation with curvature dependent speed: Algorithms based on Hamilton-Jacobi formulations” J.Comput. Phys., vol. 79, pp. 12-49, 1988.
[3] D.Peng, B.Merriman, S.Osher, H.Zhao, M.Kang, “APDE-based fast local level set method,” J. Comput. Phys., vol. 155, pp. 410-438, 1999.
[4] S.Osher, R.Fedkiw, “Level-Set Methods and Dynamic Implicit Surfaces.” pp. 17-24,pp. 119-137, New York: Springer Verlag, 2002.
[5] J.Sethian, “Level-Set Methods and Fast mat-ching Methods: Evolving Interfaces in Computat-ional Geometry, Fluid Mechanics, Computer Vision, and Materials Science.”, Cambridge, U.K.: Cambridge Univ. Press, 1999.
23年 4月 21日18 INSTITUTE OF AMBIENT INTELIGENT, Han Seung Il, Dongseo Univ, E-mail : [email protected]
![Page 19: Dept. of Visual Contents, Dongseo University 2008. 11. 24 Seung Il Han hs12@dit.dongseo.ac.kr](https://reader035.vdocuments.us/reader035/viewer/2022062807/56815143550346895dbf5fcf/html5/thumbnails/19.jpg)
Thank You
23年 4月 21日19 INSTITUTE OF AMBIENT INTELIGENT, Han Seung Il, Dongseo Univ, E-mail : [email protected]