Method for extracting the information matching between the single tree and the actual single tree by means of the remote sensing based on the two-way choice judgment principle
A two-way selection and information matching technology, applied in the direction of instruments, character and pattern recognition, computer components, etc., can solve the problem of high density, achieve the effect of wide application, low matching error and great significance
Active Publication Date: 2017-05-31
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 the solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. The present invention: a method for matching a single tree with an actual single tree extracted by a remote sensing method based on a two-way selection and judgment principle, the method comprising the following steps:
[0031] ①Tree height sorting: Sort the single trees (referred to as remote sensing trees) extracted by remote sensing methods according to the tree height from large to small, and the matching work starts from the highest remote sensing trees, and the remote sensing trees to be matched are set as A;
[0032] ②Determine the candidate measured tree: take the position of remote sensing tree A as the center, and m times the crown width as the radius, divide the neighborhood range, and within the neighborhood range, the measured trees with the height of tre...
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The invention discloses a method for extracting the information matching between the single tree and the actual single tree by the remote sensing method based on the two-way choice judgment principle and belongs to the field of the forestry remote sensing data processing and the information extraction. The technical characteristic takes the tree height difference and the distance as the judgment condition. Firstly, the most suitable measured wood in the forestry area extracted by the remote sensing is selected as the matching wood. Then taking the measured wood as the center, the successful matching is determined by judging the single wood information extracted from the remote sensing method in the area. The critical issues need to be solved: discriminating and removing the segmentation error such as the under segmentation ans the over segmentation so as to avoid the accumulation of the error with the higher matching accuracy in the standing forestry of the high density and the high spatial heterogeneity, the problem of the unreasonable matching between the tree crown mutual exclusion is solved compared with the traditional method. The method can be applied to the field of the inversion information of the forestry remote sensing technology and plays a great role in evaluating the quality of the remote sensing product and promoting the application of the remote sensing product.
Description
[0001] 1. Technical field [0002] The invention relates to a method for matching a single tree extracted by a remote sensing method with a single tree measured on the ground, which is particularly suitable for forest stands with complex vertical structures or serious canopy occlusion, and is suitable for remote sensing inversion and accuracy evaluation of single tree scale information , which belongs 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, the use of remote sensing methods to obtain single-tree-scale information has become a hot topic in current forestry remote sensing work. The work of matching the single tree extracted by remote sensing means with the actual single tree...
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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