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ACCURACY OF CROWN SEGMENTATION AND ESTIMATION OF SELECTED TREES AND FOREST STAND PARAMETERS IN ORDER TO RESOLUTION OF USED DSM AND NDSM MODELS GENERATED FROM DENSE SMALL FOOTPRINT LIDAR DATA
Airborne Scanner System Segmentation Aerial photogrammetry Comparative analysis Forestry
2015/12/23
The purpose of this study is to categorize how different surface model resolutions impact the estimation of trees and forest stands parameters: number of recognized trees, crown area, treetop location...
Automatic Peaks Extraction from Normalized Digital Surface Model (NDSM);
Remote Sensing DEM Peaks Photogrammetry NSDM Morphology
2015/12/9
Automatically extraction of peaks from 3D Digital models such as Digital Elevation model (DEM),Digital surface model (DSM) and Normalized Digital surface model (NDSM) is as important as image comprehe...
REIN ALGORITHM AND THE INFLUENCE OF POINT CLOUD DENSITY ON NDSM AND DEM PRECISION IN A SUBMEDITERRANEAN FOREST
lidar forest DEM nDSM point cloud density REIN algorithm
2015/11/10
The REIN algorithm makes use of the redundancy in lidar point cloud to generate bare ground DEM and vegetation canopy nDSM.The influence of the input lidar point density on the DEM precision and conse...
盐酸体系中la/CePr/NdSm萃取分离工艺研究
稀土 萃取工艺
2008/6/25
该项目技术采用少铈稀土产品为原料，以P507-煤油溶液为萃取剂，经过一段萃取，同时得到两个纯产品和两个富集物产品，符合包头稀土矿先提铈，后萃取分离的思路。与目前普遍采用的分离工艺相比，工序简单，化工材料消耗少。与原有“三出口”工艺相比有一定的技术创新，可以在现行分离生产线上直接应用。在同等设备条件下，扩大生产产量10%。