Earthwork quantity measuring method based on UAV photographic technology

Abstract

The invention provides an earthwork quantity measuring method based on a UAV photographic technology. The earthwork quantity measuring method comprises the steps of: S1, acquiring point cloud data; S2, preprocessing the acquired point cloud data; S3, and carrying out earthwork calculation by adopting an integral method. The earthwork quantity measuring method based on the UAV photographic technology has the advantages of being high in measurement precision and good in working efficiency, and being capable of saving a lot of labor cost. Specifically, the earthwork quantity measuring method acquires dense point cloud altitude data of surface on site and adopts the integral method for calculating earthwork, generates dense point cloud data covering a measured region by using a few image control points through photographic measurement and calculation, and can obtain accurate measurement result by utilizing integral according to a set earthwork measured boundary and a designed elevation.

Description

technical field [0001] The invention relates to an earthwork measurement method, in particular to an engineering earthwork measurement method based on unmanned aerial vehicle photography technology. Background technique [0002] In order to reasonably arrange the project schedule, accurately calculate the project cost, and improve the project quality, it is usually necessary to calculate the earthwork volume efficiently and accurately. Engineering earthwork measurement is an important part of the application of surveying and mapping engineering. The accuracy of earthwork measurement in civil engineering construction directly affects the cost and progress of the project, and is even the main factor that generates engineering disputes. Therefore, the quality of earthwork measurement is crucial in engineering construction. plays a vital role in. [0003] In the process of earthwork measurement, it is necessary to collect the earthwork measurement data first, and then calculate...

AI Technical Summary

Problems solved by technology

However, the RTK signal is affected by the water surface, high-voltage lines, trees, buildings, etc. At this time, this method is not suitable

[0008] As a new technology, three-dimensional laser scanning measurement method has the advantages of fast acquisition speed, high density, high precision, non-contact and wide measurement range. The price of the instrument is very expensive, so that it is less used in general earthworks

[0010] However, in the above calculation methods, there are still the following defects: the earthwork survey of the grid method requires the measurement of the elevation of the grid nodes, which requires the grid layout in advance, and then measures the node elevation, which greatly increases the workload; The measurement workload of the section method to calculate the earthwork is generally large, and its accuracy is related to the spacing of the section and the selection of elevation points on the section. Using the digital ground model method makes the workload of field operators larger and stronger.

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