A method for matching the single tree information extracted by remote sensing means with the actual single tree information based on the principle of two-way selection judgment
A two-way selection, remote sensing technology, applied in the direction of instruments, calculations, characters and pattern recognition, etc., can solve the problem of high density, achieve the effect of wide application, improvement of matching accuracy and progress of single tree information, and improvement of single tree information accuracy
Active Publication Date: 2020-01-31
BEIJING FORESTRY UNIVERSITY
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[0010] Aiming at the problem that the existing matching methods do not perform well under the conditions of high density and severe canopy occlusion, a single tree matching method based on the principle of two-way selection judgment is proposed, which is suitable for various forest types, especially for complex structures. Stands have great advantages in single tree extraction
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[0030] In order to clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation modes and in conjunction with the accompanying drawings. The present invention: a method based on the principle of two-way selection and judgment to extract single trees and match actual single trees by means of remote sensing, said method comprising the following steps:
[0031] ① Tree height sorting: the single trees extracted by remote sensing means (referred to as remote sensing trees) are sorted according to tree height from large to small, and the matching work starts from the highest remote sensing tree, and the remote sensing tree to be matched is A;
[0032] ② Determine the candidate measured trees: take the position of the remote sensing tree A as the center, m times the crown width as the radius, and divide the neighborhood range. Within the neighborhood range, the measured trees whose height is not mor...
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The invention discloses a method for matching the information of single trees extracted by remote sensing means with actual single trees based on the principle of two-way selection judgment, which belongs to the category of forestry remote sensing data processing and information extraction. The most suitable measured tree is selected as the matching tree in the neighborhood of forest trees extracted by remote sensing means, and then with the measured tree as the center, the single tree information extracted by remote sensing means in its neighborhood is judged to determine whether the match is successful. The key problems to be solved include: ①It can identify and remove segmentation errors such as under-segmentation and over-segmentation, and avoid the accumulation of errors; ②The matching accuracy is higher in forests with high density and high spatial heterogeneity. Compared with traditional methods, Solved the problem of unreasonable matching between tree crowns blocking each other. This invention can be applied to the field of forestry remote sensing technology inversion information, and plays a huge role in promoting the quality of remote sensing products and promoting the application of remote sensing products.
Description
[0001] 1. Technical field [0002] The invention relates to a method for matching a single tree extracted by remote sensing means with a single tree measured on the ground, especially suitable for forest stands with complex vertical structures or severe canopy shielding, and suitable for remote sensing inversion and accuracy evaluation of single tree scale information , belonging to the technical field of forestry remote sensing data processing. [0003] 2. Technical Background [0004] With the rapid development of remote sensing technology, the resolution of aerospace remote sensing data has been greatly improved, and the emergence and popularization of active remote sensing technologies such as lidar and microwave radar have made the use of remote sensing methods to obtain single-tree-scale information become a hot topic in forestry remote sensing work. The matching of individual trees extracted by remote sensing means and actual individual trees is an important step in meas...
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IPC IPC(8): G06K9/00G06K9/32G06K9/62
CPCG06V20/188G06V10/255G06F18/22
Inventor 张晓丽霍朗宁张凝瞿帅
Owner BEIJING FORESTRY UNIVERSITY