tailieunhanh - Báo cáo hóa học: " Embedded Real-Time Architecture for Level-Set-Based Active Contours"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài:Embedded Real-Time Architecture for Level-Set-Based Active Contours | EURASIP Journal on Applied Signal Processing 2005 17 2788-2803 2005 Hindawi Publishing Corporation Embedded Real-Time Architecture for Level-Set-Based Active Contours Eva Dejnozkova Centre of Mathematical Morphology School of Mines of Paris 35 Rue Saint Honoré 77305 Fontainebleau Cedex France Email dejnozke@ Petr Dokladal Centre of Mathematical Morphology School of Mines of Paris 35 Rue Saint Honore 77305 Fontainebleau Cedex France Email dokladal@ Received 14 June 2004 Revised 5 April 2005 Recommended for Publication by Luciano da F. Costa Methods described by partial differential equations have gained a considerable interest because of undoubtful advantages such as an easy mathematical description of the underlying physics phenomena subpixel precision isotropy or direct extension to higher dimensions. Though their implementation within the level set framework offers other interesting advantages their vast industrial deployment on embedded systems is slowed down by their considerable computational effort. This paper exploits the high parallelization potential of the operators from the level set framework and proposes a scalable asynchronous multiprocessor platform suitable for system-on-chip solutions. We concentrate on obtaining real-time execution capabilities. The performance is evaluated on a continuous watershed and an object-tracking application based on a simple gradient-based attraction force driving the active countour. The proposed architecture can be realized on commercially available FPGAs. It is built around generalpurpose processor cores and can run code developed with usual tools. Keywords and phrases level set partial differential equations object tracking real-time execution embedded platforms. 1. INTRODUCTION The level set was proposed in 1988 in 1 as a simple method to modelize or analyze the motion of a travelling interface. It offers a convenient and stable framework to implement a large variety of methods where images .

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