Estimate survey technique using metric camera cooperating with theodolite

Abstract

The invention discloses a technology for measuring the camera cooperation theodolite double image estimate survey, which uses the measurement camera, the electronical theodolite as the tool, wherein the inner orientation element is unknown and the outer orientation element is known to realize to measure the height of the stumpage by measuring the camera cooperation theodolite double image estimate surve. First, the axiallateral method of the space front is used to obtain the coordinate of the control point, then, the measurement camera is adopted to obtain the two imaged in the area to be measured, and the homologous image point of the two images are used to list the error equation, thereby resolving the outer orientation element of the two images, finally the light beam method is used to process the error compensation. The measurement method can simply and fast measure the tree height of the stumpage, overcomes the defect in the traditional technology.

Description

1. Technical field [0001] The invention relates to a technology of digital close-range photography tree measurement, in particular to a technology of tree measurement with a measurement camera and theodolite. 2. Background technology [0002] From the application situation at home and abroad, in the forest resources survey, the measurement of standing trees generally adopts single-point acquisition methods such as tape measure and electronic theodolite or total station. Tree-measuring techniques with measuring cameras and non-measuring cameras take multiple photos to measure trees. Through these techniques, higher tree-measuring efficiency and measurement values ​​of more parts can be obtained. [0003] However, all of the above methods have their disadvantages: [0004] ①Single-point acquisition methods such as tape measure plus electronic theodolite or total station are slow and inefficient, the instrument is inconvenient to carry, and the steps of setting up the instrume...

AI Technical Summary

Problems solved by technology

[0004] ①Using single-point acquisition methods such as tape measure plus electronic theodolite or total station is slow and inefficient, and the instrument is inconvenient to carry, and the steps of setting up the instrument, moving the station, and leveling the instrument are cumbersome and time-consuming

[0006] ③Using a non-measurement camera to measure trees, the internal and external orientation elements in the solution equation are unknown, although this problem can also be bypassed after DLT transformation through the collinear equation, but it is necessary to take multiple photos to find the same name point, and the steps are relatively short. cumbersome

Images