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PolarDet: a fast, more precise detector for rotated target in aerial images.
- Source :
-
International Journal of Remote Sensing . Aug2021, Vol. 42 Issue 15, p5831-5861. 31p. - Publication Year :
- 2021
-
Abstract
- Fast and precise object detection for hgigh-resolution aerial images has been a challenging task over the years. Due to the sharp variations in object scale, rotation, and aspect ratio, most existing methods are inefficient and imprecise. In this paper, we propose a different approach polar method. We locate an object by centre-point, direct it by four polar angles, and measure it by polar ratio system. Our polar coordinate-based method, PolarDet, is a faster, simpler, and more accurate one-stage object detector. Also, our detector introduces a sub-pixel centre semantic structure to further improve classifying veracity. PolarDet achieves nearly all state-of-the-art (SOTA) performance in aerial object detection tasks with faster inference speed. In detail, our approach obtains the SOTA results on authoritative remote sensing object detection datasets DOTA, UCAS-AOD, and HRSC2016 with 76.64% mAP (mean average precision), 97.01% mAP, and 90.46% mAP respectively. Most noticeably, our PolarDet gets the best performance and reaches the fastest speed (32fps) at the UCAS-AOD dataset. [ABSTRACT FROM AUTHOR]
- Subjects :
- *DETECTORS
*REMOTE sensing
*PIXELS
*ROTATIONAL motion
Subjects
Details
- Language :
- English
- ISSN :
- 01431161
- Volume :
- 42
- Issue :
- 15
- Database :
- Academic Search Index
- Journal :
- International Journal of Remote Sensing
- Publication Type :
- Academic Journal
- Accession number :
- 151468393
- Full Text :
- https://doi.org/10.1080/01431161.2021.1931535