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Method for rapidly acquiring tree morphological model parameters based on photogrammetry

A morphological model and acquisition method technology, applied in image data processing, instruments, calculations, etc., can solve the problems of complex camera calibration, high time and equipment costs, and difficult field conditions.

Inactive Publication Date: 2013-07-24
RES INST OF FOREST RESOURCE INFORMATION TECHN CHINESE ACADEMY OF FORESTRY
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  • Claims
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Problems solved by technology

Second, the laser scanning method has high time cost and equipment cost, and it is difficult to meet the field conditions
Third, both the stereo pair method and the single photo method require complex camera calibration

Method used

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  • Method for rapidly acquiring tree morphological model parameters based on photogrammetry
  • Method for rapidly acquiring tree morphological model parameters based on photogrammetry
  • Method for rapidly acquiring tree morphological model parameters based on photogrammetry

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Embodiment Construction

[0072] A more complete and better understanding of the invention, and many of its attendant advantages, will readily be learned by reference to the following detailed description when considered in conjunction with the accompanying drawings, but the accompanying drawings illustrated herein are intended to provide a further understanding of the invention and constitute part of the invention.

[0073] In order to make the above objects and features of the present invention more obvious and comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0074] Such as figure 1 The following steps are shown:

[0075] Step 1) Choose a tree shape model in the form of a power function, and obtain the mathematical expression of the tree shape through the model.

[0076] Choose the tree to be photographed, whose crown should preferably not overlap with the surrounding trees, and the shooting loc...

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Abstract

The invention relates to the tree morphological visual model simulation model and image correction of close range photography measurement, in particular to a method for rapidly acquiring tree morphological model parameters based on photogrammetry, and belongs to the technical field of a computer. The method comprises the following steps of selecting a tree morphological model in form of a power function, shooting and carrying out auxiliary measurement of tree images, correcting the tree images, and matching the model with the images. Compared with the prior art, the method is specially formulated aiming at the requirements of exactly acquiring peripheral contour information of two-dimensional trees; the method has low requirements to the equipment; and the auxiliary measurement is simple and easy to implement. Thus, the method is good for acquiring field data and popularizing; the selected tree morphological model comprises key indexes, namely crown indexes in the tree morphology; and the method is very good for describing the tree morphology and unifying different tree models.

Description

technical field [0001] The invention relates to tree shape visualization model simulation and close-range photogrammetry image correction, in particular to a method for quickly acquiring tree shape model parameters based on photogrammetry, and belongs to the field of computer technology. Background technique [0002] Tree form visualization model simulation is accomplished through the tree form modeling method and visualization technology. It is mainly used in visual simulation applications of trees and forests. The tree shape modeling technology mainly focuses on the selection of the model and the acquisition method of the parameters. Close-range photogrammetry is a technology that obtains information about the subject through analytical analysis of captured images. When the tree is taken as the shooting object and the tree shape model is known, the method of obtaining model parameters becomes the focus of research. Because taking a single tree photo is simple and effici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
Inventor 刘闽张怀清鞠洪波蒋娴陈永富
Owner RES INST OF FOREST RESOURCE INFORMATION TECHN CHINESE ACADEMY OF FORESTRY
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