Title:
INDIVIDUAL TREE MODELING SYSTEM AND INDIVIDUAL TREE MODELING METHOD
Document Type and Number:
WIPO Patent Application WO/2022/249507
Kind Code:
A1
Abstract:
An acquisition control unit 101 acquires three-dimensional point group data by irradiating an individual tree in a forest from a predetermined measurement point with a laser beam of a three-dimensional laser scanner. A generation control unit 102 generates individual tree mesh data representing the bark of the individual tree by converting the acquired three-dimensional point group data into mesh data composed of polygons. An estimation control unit 103 regards a plurality of points, located on the same plane in a horizontal direction with respect to the generated individual tree mesh data, as a portion of a circle formed by the bark of the individual tree, and extrapolates the circle from the plurality of points, and uses the radius of the extrapolated circle to estimate, as virtual data on the bark of the individual tree, data on the bark of the individual tree in which the individual tree mesh data is not present. A formation control unit 104 forms a three-dimensional cylinder model as a three-dimensional model of a stem of the individual tree on the basis of the individual tree mesh data, the estimated virtual data, the radius of the circle of the virtual data, and information on the height of the individual tree.
Inventors:
YAMAGUCHI KEIJI (JP)
Application Number:
PCT/JP2021/037558
Publication Date:
December 01, 2022
Filing Date:
October 11, 2021
Export Citation:
Assignee:
MAPRY CO LTD (JP)
International Classes:
G01B11/24; G01S17/89; G06T17/20
Foreign References:
| JP2017167092A | 2017-09-21 | |||
| JP6828211B1 | 2021-02-10 | |||
| CN110274549A | 2019-09-24 | |||
| CN109270544A | 2019-01-25 | |||
| CN102834691A | 2012-12-19 | |||
| CN106408608A | 2017-02-15 |
Attorney, Agent or Firm:
FUKUSHIMA Hajime (JP)
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