The boundary vector field
[K.W. Sum, 2007] (BVF) is an external force for parametric
active contours (i.e. Snakes). In the fields of
computer vision
Computer vision is an interdisciplinary scientific field that deals with how computers can gain high-level understanding from digital images or videos. From the perspective of engineering, it seeks to understand and automate tasks that the hum ...
and
image processing
An image is a visual representation of something. It can be two-dimensional, three-dimensional, or somehow otherwise feed into the visual system to convey information. An image can be an artifact, such as a photograph or other two-dimensiona ...
, parametric active contours are widely used for
segmentation and object extraction. The active contours move progressively towards its target based on the external forces. There are a number of shortcomings in using the traditional external forces, including the capture range problem, the concave object extraction problem, and high computational requirements.
The BVF is generated by an
interpolation
In the mathematical field of numerical analysis, interpolation is a type of estimation, a method of constructing (finding) new data points based on the range of a discrete set of known data points.
In engineering and science, one often has a n ...
scheme
which reduces the computational requirement significantly, and at the same time, improves the capture range and concave object extraction capability.
The BVF is also tested in moving object tracking and is proven to provide fast detection method for real time video applications.
[N. Lin, 2008]
References
* K.W. Sum and Paul Y.S. Cheung, "Boundary Vector Field for Parametric Active Contours," Pattern Recognition, vol. 40, no. 6, pp. 1635–1645, Jun 2007
* Rafael Verdú-Monedero, Juan Morales-Sánchez, and Luis Weruaga, "Convergence Analysis of Active Contours," Image and Vision Computing, vol. 26, issue 8, pp. 1118–1128, 2008
* N. Lin and B. Hu, "Moving Object Detection and Tracking in Video Sequences Based on Boundary Vector Field," Journal of Computer Applications, vol. 28, Jun 2008
Pattern Recognition(Journal of the Pattern Recognition Society)
Image and Vision ComputingElsevier Journal
Journal of Computer Applications
Image processing
Animation terminology
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