Journal
OPTIK
Volume 125, Issue 14, Pages 3449-3453Publisher
ELSEVIER GMBH, URBAN & FISCHER VERLAG
DOI: 10.1016/j.ijleo.2014.02.001
Keywords
Sub-pixel edge detection; Sobel operator; Gray-moment; Smoothing spline algorithm
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Funding
- National Nature Science Foundation of China [61201084]
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In this paper, a new edge detection approach combining gray-moments operator with smoothing spline algorithm is proposed, which is invariant to additive and multiplicative noises in the image. This approach consists of two steps: firstly, a continuous blurred edge model is obtained using the smoothing spline algorithm in the edge region detected by Sobel operator; then a gray-moment solution is derived for both the one- and two-dimensional situations using the blurred edge model. Testing of this new detection approach demonstrates more robustness against the white Gaussian noise and speckle noise, and run time very close to the gray-moment and space-moment operators. The above advantages indicate this approach is very suitable for on-line accurate detection. (C) 2014 Elsevier GmbH. All rights reserved.
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