Analysis of Incidence Angle and Distance Effects on Terrestrial Laser Scanner Intensity: Search for Correction Methods
Analysis of Incidence Angle and Distance Effects on Terrestrial Laser Scanner Intensity: Search for Correction Methods
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DOI：
10.3390/rs3102207
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发表时间：
2011-10-01
期刊：
影响因子：
5
通讯作者：
Kukko, Antero
中科院分区：
文献类型：
--
作者：
Kaasalainen, Sanna;Jaakkola, Anttoni;Kukko, Antero
近年来，地面激光扫描仪(TLS)的强度信息已成为一个重要的研究对象，将校准后的强度数据添加到地形信息中将会有越来越多的应用。本文研究了距离和入射角对光强测量的影响，探索了不同TLS仪器和靶材的实用校正方法。研究发现，距离(距离)效应主要受仪器因素影响，而入射角效应主要受靶面特性影响。对这两种影响的修正是可能的，但还需要更多的研究来进行物理解释，并更有效地利用强度数据来表征目标。
The intensity information from terrestrial laser scanners (TLS) has become an important object of study in recent years, and there are an increasing number of applications that would benefit from the addition of calibrated intensity data to the topographic information. In this paper, we study the range and incidence angle effects on the intensity measurements and search for practical correction methods for different TLS instruments and targets. We find that the range (distance) effect is strongly dominated by instrumental factors, whereas the incidence angle effect is mainly caused by the target surface properties. Correction for both effects is possible, but more studies are needed for physical interpretation and more efficient use of intensity data for target characterization.