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An approach toward fast gradient based image segmentation

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Final Year IEEE Projects for BE, B.Tech, ME, M.Tech,M.Sc, MCA & Diploma Students latest Java, .Net, Matlab, NS2, Android, Embedded,Mechanical, Robtics, VLSI, Power Electronics, IEEE projects are given absolutely complete working product and document providing with real time Software & Embedded training......

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An approach toward fast gradient based image segmentation

  1. 1. OUR OFFICES @CHENNAI/ TRICHY / KARUR / ERODE / MADURAI / SALEM / COIMBATORE / BANGALORE / HYDRABAD CELL: +91 9894917187 | 875487 1111 / 2111 / 3111 / 4111 / 5111 / 6111 ECWAY TECHNOLOGIES IEEE SOFTWARE | EMBEDDED | MECHANICAL | ROBOTICS PROJECTS DEVELOPMENT Visit: www.ecwaytechnologies.com | www.ecwayprojects.com Mail to: ecwaytechnologies@gmail.com AN APPROACH TOWARD FAST GRADIENT-BASED IMAGE SEGMENTATION By A PROJECT REPORT Submitted to the Department of electronics &communication Engineering in the FACULTY OF ENGINEERING & TECHNOLOGY In partial fulfillment of the requirements for the award of the degree Of MASTER OF TECHNOLOGY IN ELECTRONICS &COMMUNICATION ENGINEERING APRIL 2016
  2. 2. OUR OFFICES @CHENNAI/ TRICHY / KARUR / ERODE / MADURAI / SALEM / COIMBATORE / BANGALORE / HYDRABAD CELL: +91 9894917187 | 875487 1111 / 2111 / 3111 / 4111 / 5111 / 6111 ECWAY TECHNOLOGIES IEEE SOFTWARE | EMBEDDED | MECHANICAL | ROBOTICS PROJECTS DEVELOPMENT Visit: www.ecwaytechnologies.com | www.ecwayprojects.com Mail to: ecwaytechnologies@gmail.com CERTIFICATE Certified that this project report titled “An Approach Toward Fast Gradient-Based Image Segmentation” is the bonafide work of Mr. _____________Who carried out the research under my supervision Certified further, that to the best of my knowledge the work reported herein does not form part of any other project report or dissertation on the basis of which a degree or award was conferred on an earlier occasion on this or any other candidate. Signature of the Guide Signature of the H.O.D Name Name
  3. 3. OUR OFFICES @CHENNAI/ TRICHY / KARUR / ERODE / MADURAI / SALEM / COIMBATORE / BANGALORE / HYDRABAD CELL: +91 9894917187 | 875487 1111 / 2111 / 3111 / 4111 / 5111 / 6111 ECWAY TECHNOLOGIES IEEE SOFTWARE | EMBEDDED | MECHANICAL | ROBOTICS PROJECTS DEVELOPMENT Visit: www.ecwaytechnologies.com | www.ecwayprojects.com Mail to: ecwaytechnologies@gmail.com DECLARATION I hereby declare that the project work entitled “An Approach Toward Fast Gradient-Based Image Segmentation” Submitted to BHARATHIDASAN UNIVERSITY in partial fulfillment of the requirement for the award of the Degree of MASTER OF APPLIED ELECTRONICS is a record of original work done by me the guidance of Prof.A.Vinayagam M.Sc., M.Phil., M.E., to the best of my knowledge, the work reported here is not a part of any other thesis or work on the basis of which a degree or award was conferred on an earlier occasion to me or any other candidate. (Student Name) (Reg.No) Place: Date:
  4. 4. OUR OFFICES @CHENNAI/ TRICHY / KARUR / ERODE / MADURAI / SALEM / COIMBATORE / BANGALORE / HYDRABAD CELL: +91 9894917187 | 875487 1111 / 2111 / 3111 / 4111 / 5111 / 6111 ECWAY TECHNOLOGIES IEEE SOFTWARE | EMBEDDED | MECHANICAL | ROBOTICS PROJECTS DEVELOPMENT Visit: www.ecwaytechnologies.com | www.ecwayprojects.com Mail to: ecwaytechnologies@gmail.com ACKNOWLEDGEMENT I am extremely glad to present my project “An Approach Toward Fast Gradient-Based Image Segmentation” which is a part of my curriculum of third semester Master of Science in Computer science. I take this opportunity to express my sincere gratitude to those who helped me in bringing out this project work. I would like to express my Director,Dr. K. ANANDAN, M.A.(Eco.), M.Ed., M.Phil.,(Edn.), PGDCA., CGT., M.A.(Psy.)of who had given me an opportunity to undertake this project. I am highly indebted to Co-OrdinatorProf. Muniappan Department of Physics and thank from my deep heart for her valuable comments I received through my project. I wish to express my deep sense of gratitude to my guide Prof. A.Vinayagam M.Sc., M.Phil., M.E., for her immense help and encouragement for successful completion of this project. I also express my sincere thanks to the all the staff members of Computer science for their kind advice. And last, but not the least, I express my deep gratitude to my parents and friends for their encouragement and support throughout the project.
  5. 5. OUR OFFICES @CHENNAI/ TRICHY / KARUR / ERODE / MADURAI / SALEM / COIMBATORE / BANGALORE / HYDRABAD CELL: +91 9894917187 | 875487 1111 / 2111 / 3111 / 4111 / 5111 / 6111 ECWAY TECHNOLOGIES IEEE SOFTWARE | EMBEDDED | MECHANICAL | ROBOTICS PROJECTS DEVELOPMENT Visit: www.ecwaytechnologies.com | www.ecwayprojects.com Mail to: ecwaytechnologies@gmail.com ABSTRACT: In this paper, we present and investigate an approach to fast multilabel color image segmentation using convex optimization techniques. The presented model is in some ways related to the well-known Mumford–Shah model, but deviates in certain important aspects. The optimization problem has been designed with two goals in mind. The objective function should represent fundamental concepts of image segmentation, such as incorporation of weighted curve length and variation of intensity in the segmented regions, while allowing transformation into a convex concave saddle point problem that is computationally inexpensive to solve. This paper introduces such a model, the nontrivial transformation of this model into a convex–concave saddle point problem, and the numerical treatment of the problem. We evaluate our approach by applying our algorithm to various images and show that our results are competitive in terms of quality at unprecedentedly low computation times. Our algorithm allows high-quality segmentation of megapixel images in a few seconds and achieves interactive performance for low resolution images
  6. 6. OUR OFFICES @CHENNAI/ TRICHY / KARUR / ERODE / MADURAI / SALEM / COIMBATORE / BANGALORE / HYDRABAD CELL: +91 9894917187 | 875487 1111 / 2111 / 3111 / 4111 / 5111 / 6111 ECWAY TECHNOLOGIES IEEE SOFTWARE | EMBEDDED | MECHANICAL | ROBOTICS PROJECTS DEVELOPMENT Visit: www.ecwaytechnologies.com | www.ecwayprojects.com Mail to: ecwaytechnologies@gmail.com INTRODUCTION: The importance of grouping performed by the human visual system has been evident at least since the Gestalt movement in psychology. Not surprisingly, grouping is also considered essential for a wide range of computational vision problems. For instance, intermediate-level vision problems such as stereo or motion estimation benefit from appropriate region support for correspondence estimation. Higher-level problems, such as image indexing, foreground- background separation, or recognition by parts, can also benefit from a useful segmentation of the image. The problem of image segmentation and grouping is, therefore, a long-standing challenge in computer vision. In 1989, Mumford and Shah introduced their famous image model, and showed how it can be applied to many segmentation problems. Unfortunately, it is highly non-linear and cannot be easily optimized. Existing convex approaches typically suffer from high computational costs, especially when separating into many distinct regions. In this paper, we propose a model incorporating all the basic aspects of the gradient-based Mumford-Shah approach while maintaining an easy and efficiently-to-handle convex saddle point structure to enable fast computation. Our work is inspired by the seminal previous work on the Mumford-Shah functional by Alberti et al. And the works of Pock et al. And Strekalovskiy et al. which build upon Alberti’s investigations. In Section II we introduce our model by considering the binary segmentation case. We derive its unique saddle point representation and present non- trivial extensions that allow for multi-region segmentation and proper color information treatment. In Section III, we show how a primal-dual convex optimization algorithm can be applied to solve the saddle point problem. To efficiently treat multi-region segmentation, we introduce a very fast, approximative projection scheme in Section III-C. We conclude with an evaluation of our approach and compare our results to other state-of-the-art techniques.
  7. 7. OUR OFFICES @CHENNAI/ TRICHY / KARUR / ERODE / MADURAI / SALEM / COIMBATORE / BANGALORE / HYDRABAD CELL: +91 9894917187 | 875487 1111 / 2111 / 3111 / 4111 / 5111 / 6111 ECWAY TECHNOLOGIES IEEE SOFTWARE | EMBEDDED | MECHANICAL | ROBOTICS PROJECTS DEVELOPMENT Visit: www.ecwaytechnologies.com | www.ecwayprojects.com Mail to: ecwaytechnologies@gmail.com CONCLUSION: In this paper we have introduced a very fast method for unsupervised, gradient based image segmentation. We have evaluated our approach on different test cases, and achieve high-quality results at a fraction of the usually required computation time. This work is intended as a proof of concept of the ideas behind the modeling and transformation process presented in Section II. We feel that these ideas can be applied to a more general class of optimization problems that tries to minimize gradient norms specifically excluding boundaries. While the presented approach works autonomously, additional user input can be incorporated to increase the visual quality of the segmentation. For example, it would be an interesting and useful extension to let the user influence the weights for each energy term in the objective function locally at each pixel. Because of the short computation times it would also be interesting to see real time interaction of the user with the algorithm via some sort of GUI. The presented approach is independent of the domain dimension, so for future work we plan to consider 3D image segmentation and video segmentation. From a mathematical standpoint we would like to investigate the justification of the convex relaxation process used to obtain a convex-concave saddle point formulation in Section II and the detailed influence of the approximative projection scheme presented in Section III-C on convergence of the algorithm. In addition, the full-color model presented in Section II-D could be extended to have connected restriction sets (similar to the work of Strekalovskiy et al. on the Mumford-Shah functional), which would further improve quality.
  8. 8. OUR OFFICES @CHENNAI/ TRICHY / KARUR / ERODE / MADURAI / SALEM / COIMBATORE / BANGALORE / HYDRABAD CELL: +91 9894917187 | 875487 1111 / 2111 / 3111 / 4111 / 5111 / 6111 ECWAY TECHNOLOGIES IEEE SOFTWARE | EMBEDDED | MECHANICAL | ROBOTICS PROJECTS DEVELOPMENT Visit: www.ecwaytechnologies.com | www.ecwayprojects.com Mail to: ecwaytechnologies@gmail.com REFERENCES: [1] A. Levin, D. Lischinski, and Y. Weiss, “A closed-form solution to natural image matting,” IEEE Trans. Pattern Anal. Mach. Intell., vol. 30, no. 2, pp. 228–242, Feb. 2008. [2] I. Kokkinos and P. Maragos, “Synergy between object recognition and image segmentation using the expectation-maximization algorithm,” IEEE Trans. Pattern Anal. Mach. Intell., vol. 31, no. 8, pp. 1486–1501, Aug. 2009. [3] T. Pock, D. Cremers, H. Bischof, and A. Chambolle, “An algorithm for minimizing the Mumford–Shah functional,” in Proc. IEEE 12th Int. Conf. Comput. Vis., Sep. 2009, pp. 1133– 1140. [4] E. Strekalovskiy, A. Chambolle, and D. Cremers, “A convex representation for the vectorial Mumford–Shah functional,” in Proc. IEEE Conf. Comput. Vis. Pattern Recognit. (CVPR), Providence, RI, USA, Jun. 2012, pp. 1712–1719. [5] A. Chambolle, D. Cremers, and T. Pock, “A convex approach to minimal partitions,” SIAM J. Imag. Sci., vol. 5, no. 4, pp. 1113–1158, 2012. [6] J. Lellmann, J. Kappes, J. Yuan, F. Becker, and C.Schnörr, “Convex multi-class image labeling by simplex-constrained total variation,” in Proc. 2nd Int. Conf. Scale Space Variat. Methods Comput. Vis. (SSVM), 2009, pp. 150–162. [7] E. Strekalovskiy and D. Cremers, “Generalized ordering constraints for multilabel optimization,” in Proc. IEEE Int. Conf. Comput. Vis. (ICCV), Washington, DC, USA, Nov. 2011, pp. 2619–2626. [8] T. Pock, A. Chambolle, H. Bischof, and D. Cremers, “A convex relaxation approach for computing minimal partitions,” in Proc. IEEE Conf. Comput. Vis. Pattern Recognit. (CVPR), Miami, FL, USA, Jun. 2009, pp. 810–817. [9] D. Cremers, T. Pock, K. Kolev, and A. Chambolle, “Convex relaxation techniques for segmentation, stereo and multiview reconstruction,” in Markov Random Fields for Vision and Image Processing. Cambridge, MA, USA: MIT Press, 2011.

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