Abstract
Registration is an effective pre-processing for amounts of applications like image mosaic, mapping, remote detection, and change detection. The scale-invariant feature transform (SIFT) and block matching are two widely algorithms for registration in computer vision. However, as a result of speckle noises, the two algorithms perform unsatisfactorily on synthetic aperture radar (SAR) images. In this paper, we introduce an algorithm, which is named Bi-SIFT optimization algorithm, combing SIFT in two different scales and optimization model in block matching. Bi-SIFT ensures enough correct matching pairs rather than avoiding mismatching-pairs, which is used in traditional ways, to make it more effective. We illustrate the improvement brought by Bi-SIFT by both qualitative analysis and comparing test. Besides, we present serious registration applications of Bi-SIFT.
Original language | English |
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Publication status | Published - 2015 |
Event | IET International Radar Conference 2015 - Hangzhou, China Duration: 14 Oct 2015 → 16 Oct 2015 |
Conference
Conference | IET International Radar Conference 2015 |
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Country/Territory | China |
City | Hangzhou |
Period | 14/10/15 → 16/10/15 |
Keywords
- Optimization model
- SAR image registration
- Scale-invariant feature transform (SIFT)
- Synthetic aperture radar (SAR)