Airborne Dual-Wavelength LiDAR Data for Classifying Land Cover

作者：Wang Cheng Kai; Tseng Yi Hsing; Chu Hone Jay^*

来源：Remote Sensing, 2014, 6(1): 700-715.

DOI：10.3390/rs6010700

• dual-wavelength
• LiDAR
• land cover classification
• support vector machine (SVM)

This study demonstrated the potential of using dual-wavelength airborne light detection and ranging (LiDAR) data to classify land cover. Dual-wavelength LiDAR data were acquired from two airborne LiDAR systems that emitted pulses of light in near-infrared (NIR) and middle-infrared (MIR) lasers. The major features of the LiDAR data, such as surface height, echo width, and dual-wavelength amplitude, were used to represent the characteristics of land cover. Based on the major features of land cover, a support vector machine was used to classify six types of suburban land cover: road and gravel, bare soil, low vegetation, high vegetation, roofs, and water bodies. Results show that using dual-wavelength LiDAR-derived information (e.g., amplitudes at NIR and MIR wavelengths) could compensate for the limitations of using single-wavelength LiDAR information (i.e., poor discrimination of low vegetation) when classifying land cover.

• 出版日期2014-1