Rapid individual tree modeling method by close shot ordinary digital camera

Abstract

The invention discloses a rapid individual tree modeling method by a close shot ordinary digital camera and belongs to a real three-dimensional visualization expression method for forest resource information. The method is characterized in that the ordinary digital camera is used as a tool, an individual tree is photographed around, artificial marks are arranged around the tree to be tested to establish relative control, and then the space coordinate of a tree morphological structure is obtained through a self-checking analysis method; a structural geometric primitive function is used for modeling, and then a three-dimensional model of an individual tree morphological structure is obtained; and finally tree texture information obtained through photographing is combined with the individual tree three-dimensional morphological structure model by texture mapping to obtain an individual tree three-dimensional model with reality. According to the rapid individual tree modeling method by the close shot ordinary digital camera, the characteristics of portability and flexibility of the digital camera are adequately used, the operating mode is easy to learn, the cost of modeling is reduced, and the modeling period is shortened; and the highly reductive tree morphological structure model is combined with the real texture information, so that the precision and the sense of reality of the individual tree model are greatly improved.

Description

1. Technical field [0001] The invention relates to a real three-dimensional visualization expression method of forest resource information, in particular to a method for quickly establishing a three-dimensional model of a single tree with a close-range ordinary digital camera. 2. Technical background [0002] Most of the current management and processing of forest resource information in our country adopts two-dimensional data information, which has a low degree of fidelity in the expression of the real world and brings great inconvenience in understanding. The three-dimensional visualization of forest resource information makes up for the lack of two-dimensional information. It brings people a new way of understanding, changing from abstract and qualitative understanding to concrete and vivid understanding of visual senses. It can provide users with visual experience, let users have a perceptual understanding of forest resource information, and enable decision makers to hav...

AI Technical Summary

Problems solved by technology

[0005] ① It is very difficult to build an accurate model of a single tree. Even if the simulation model is automatically generated, it is still difficult to achieve the consistency with the shape and structure of the real tree in the face of the unpredictable natural environment;

[0006] ② The cost of accurate modeling is high, and the use is more specialized, which is difficult for non-professionals;

[0007] ③The action is slow and the cycle is long during the actual measurement