影像二值化在空载光达影像树冠孔隙分类上之应用-台大地理系.PDF

地理學報 第六十六期： 53-66 (2012) 53 JOURNAL OF GEOGRAPHICAL SCIENCE (66) : 53-66 (2012) 影像二值化在空載光達影像樹冠 孔隙分類上之應用 The Application of Binarization on Canopy Gaps of Airborne LiDAR Classification 魏浚紘 * 吳守從 ** 黃韋傑 *** Chun-Hung Wei Shou-Tsung Wu Wei-Chieh Huang 謝依達 * 鍾玉龍**** 陳朝圳***** Yi-Ta Hsieh Yuh-Lurng Chung Chaur-Tzuhn Chen Abstract Following the progress of remote sensing technology, a Canopy Height Model (CHM) has commonly been applied for delineating canopy gaps automatically and extracting its edge detection by using an airborne LiDAR (Light Detection And * 國立屏東科技大學生物資源研究所博士班研究生 Ph.D. Student, Graduate Institute of Bioresources, National Pingtung University of Science and Technology. ** 實踐大學觀光管理學系副教授 Associate Professor, Department of Tourism Management, Shih Chien University. *** 國立屏東科技大學森林系碩士班研究生 Graduate Student, Department of Forestry, National Pingtung University of Science and Technology. **** 國立屏東科技大學森林系教授 Professor, Department of Forestry, National Pingtung University of Science and Technology. ***** 國立屏東科技大學森林系教授 ，通訊作者(e-mail: cct@gisfore.npust.edu.tw) Professor, Department of Forestry, National Pingtung University of Science and Technology, Corresponding Author. 54 Ranging). This study established the frequency distribution of gray-scale image pixel brightness values, selected the first two peaks troughs between the gray-scale brightness value as a threshold value, and used the image segmentation techniques to detect the boundary of crown