系统工程与电子技术

• 软件、算法与仿真 • 上一篇    下一篇

快速自适应鲁棒性尺度不变的特征检测子

张岩, 李建增, 李德良, 杜玉龙   

  1. 军械工程学院无人机工程系, 河北 石家庄 050003
  • 出版日期:2017-05-25 发布日期:2010-01-03

Fast adaptive robust invariant scalable feature detector

ZHANG Yan, LI Jianzeng, LI Deliang, DU Yulong   

  1. Department of Unmanned Aerial Vehicle Engineering, Ordnance Engineering College, Shijiazhuang 050003, China
  • Online:2017-05-25 Published:2010-01-03

摘要:

为提高特征检测的可靠性与实时性,提出了一种快速自适应鲁棒性尺度不变的特征检测子(fast  adaptive robust invariant scalable feature detector, FARISFD)。首先提出尺度空间组数自适应选取方法改善了检测子针对不同图像的鲁棒性,然后提出基于过渡层的尺度空间构建方法加强了尺度空间的鲁棒性,最后利用基于加速段的特征检测子(features from accelerated segment test, FAST)计算特征分数,并通过简化传统亚像素级矫正方法,提高了特征分数的计算与亚像素级矫正速度。通过复现率与耗时实验进行了验证,与5种使用广泛的检测子对比结果表明,FARISFD的鲁棒性与速度较高。

Abstract:

To improve the reliability and real time of feature detection, a fast adaptive robust invariant scalable feature detector (FARISFD) is proposed. Firstly, the adaptive selection of octave is proposed to improve reliability of different images. Secondly, the creation of scale space based on intermediate layer is proposed to improve robustness and speed for scale space. Finally, the speed for computation of feature scores and sub-pixel refinement are improved by computing the feature scores via features from accelerated segment test (FAST) and simplification of traditional sub-pixel refinement methods. The experimental results of repeatability and time show that comparing with 5 widely available feature detectors, the FARISFD reveals stronger robustness, and the speed is faster.