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A Novel contour tracing algorithm for Object Shape Reconstruction Using Parametric Curves

Computers, Materials & Continua 2023年第4期75卷 331-350页

作者： Nihat Arslan Kali Gurkahraman Defence Technology Programme Sivas University of Science and TechnologySivas58070Turkey Department of Computer Engineering Sivas Cumhuriyet UniversitySivas58140Turkey

Parametric curves such as Bézier and B-splines, originally developedfor the design of automobile bodies, are now also used in image processing andcomputer vision. For example, reconstructing an object shape in an image,including different translations, scales, and orientations, can be performedusing these parametric curves. For this, Bézier and B-spline curves can be generatedusing a point set that belongs to the outer boundary of the object. Theresulting object shape can be used in computer vision fields, such as searchingand segmentation methods and training machine learning algorithms. Theprerequisite for reconstructing the shape with parametric curves is to obtainsequentially the points in the point set. In this study, a novel algorithm hasbeen developed that sequentially obtains the pixel locations constituting theouter boundary of the object. The proposed algorithm, unlike the methods inthe literature, is implemented using a filter containing weights and an outercircle surrounding the object. In a binary format image, the starting point ofthe tracing is determined using the outer circle, and the next tracing movementand the pixel to be labeled as the boundary point is found by the filter ***, control points that define the curve shape are selected by reducing thenumber of sequential points. Thus, the Bézier and B-spline curve equationsdescribing the shape are obtained using these points. In addition, differenttranslations, scales, and rotations of the object shape are easily provided bychanging the positions of the control points. It has also been shown that themissing part of the object can be completed thanks to the parametric curves.

关键词： contour tracing algorithm bézier curve B-spline curve object shape reconstruction

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algorithm of determination of image contours of biological nature

Algorithm of determination of image contours of biological n...

引用

International Conference on Modern Problems of Radio Engineering, Telecommunication and Computer Science

作者： Berezsky, Oleg Bat'ko, Yuri Ternopil State Econ Univ N Yaremchuk Str 25-45 UA-40018 Ternopol Ukraine Temopil State Econ Univ UA-47720 Ternopol Ukraine

algorithms of selection of contours of images are explored, algorithm of determination of external contour of images is offered and analyzed, and also an example of program realization of offered algorithm and results... 详细信息

ISBN: (纸本)9781424413218

关键词： contour tracing algorithm the Stopping Criterione

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