Measuring method, system and device based on oblique photography, and storage medium

Abstract

The invention relates to a measuring method, system and device based on oblique photography, and a storage medium. The method comprises the following steps of controlling an unmanned aerial vehicle tofly according to a set flying trajectory, collecting image information of a target object in a to-be-measured area by photography, performing aerotriangulation according to the image information of the target object, and building a spatial three-dimensional model; selecting a plurality of surface points of the spatial three-dimensional model according to a preset point location selection rule, and establishing a main baseline and an auxiliary baseline of the target object according to the surface points; and determining position information of the target object according to the main baselineand the auxiliary baseline. The measuring method is accurate in collecting result and relatively high in efficiency; most of field operations are transferred into a room and subjected to computer-aided processing, so that the field operation risk of an operator is eliminated, the operation cost is reduced, and the problem of difficult field collection due to the closure and privacy of the target object is solved; and the measuring method is suitable for popularization and use of large-scale high-precision measurement.

Description

technical field [0001] The invention relates to the technical field of surveying and mapping geographic information, in particular to a measurement method, system, storage medium and equipment based on oblique photography. Background technique [0002] In the prior art, there are mainly two methods for collecting ground objects: field measurement collection and conventional aerial photography collection. The field measurement and collection adopts relevant technologies to collect data on the ground and objects on the spot; the conventional aerial photography collection is to take photos through the platform equipped with an aerial camera, combined with image control point measurement, to form a stereo image pair for data collection. Both of the above two methods have obvious disadvantages. The field measurement acquisition method has slow data acquisition, low efficiency, and high cost. The data acquisition of private or high-rise buildings is difficult, high-precision but u...

AI Technical Summary

Problems solved by technology

Both of the above two methods have obvious disadvantages. The field measurement acquisition method has slow data acquisition, low efficiency, and high cost. The data acquisition of private or high-rise buildings is difficult, high-precision but uneven; conventional aerial photography acquisition , fast data acquisition, high efficiency, low cost, but low precision, cannot meet the requirements

It can be seen that the above two methods cannot take into account the accuracy, cost and efficiency of high-precision measurement

[0003] At present, most model acquisition software in China, first, use the wall to acquire building corners, but there are problems such as insufficient accuracy due to gross errors, difficult acquisition of hidden surfaces and tiny surfaces, and inconvenient operation; second, direct acquisition of building corners is difficult to achieve , it is even impossible to operate

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