西北林学院学报2018，Vol.33Issue(2)：28-34,7.DOI:10.3969/j.issn.1001-7461.2018.02.05
纹理步长对刺槐林叶面积指数估算的影响
Effects of Displacement on LAI Estimation of Black Locust Plantations Based on the Texture Values from Quickbird Satellite Imagery
摘要
Abstract
The black locust plantations in Weibei area were chosen as the research objects.Texture features with different displacement of Quickbird image were calculated.A simple linear model was established between field measurement of LAI and texture parameter to compare the effect of texture displacement on the accuracy of LAI of black locust plantations and to select the optimum displacement of LAI estimation.The results indicated that the accuracy of LAI estimation was less affected by displacement for Angular Second Moment (ASM) and Entropy (ENT);for Contrast (CON),Dissimilarity (DIS) and Homogeneity (HOM),the accuracy of LAI estimation significantly decreased with the increase of displacement.When displacement was set as 3,the r2 value reached the maximum value (0.51,0.56 and 0.59 respectively);for Correlation (COR),the accuracy of LAI estimation decreased with the increase of displacement when the orientation was set as 0° and 135°.The displacement had no effects on the accuracy of LAI estimation when the orientation was 45° and 90°.Displacement had no effects on LAI estimation for Variance (VAR).关键词
步长/纹理/叶面积指数/快鸟影像/刺槐林Key words
displacement/texture parameters/leaf area index/Quickbird imagery/black locust分类
农业科技引用本文复制引用
周靖靖,刘金良,郭睿妍,罗杰,周欢,梁杰,赵忠..纹理步长对刺槐林叶面积指数估算的影响[J].西北林学院学报,2018,33(2):28-34,7.基金项目
中央高校科研业务费专项资金资助项目(2662015BQ009、2662016PY039) （2662015BQ009、2662016PY039）
国家自然科学基金项目(41501365). （41501365）
