Live-action three-dimensional-based single-chip measurement method

Abstract

The invention provides a live-action three-dimensional-based single-chip measurement method, which comprises the steps of performing three-dimensional modeling on a to-be-measured area to generate a live-action triangulation network; acquiring image information of each position of the to-be-measured area, and importing the image information of each position into a corresponding position in the live-action triangulation network; receiving a first click operation on any position in the live-action triangulation network; in response to the first click operation, loading first image information corresponding to the position of the first click operation; and obtaining space coordinates of a world coordinate system of the first click operation position according to the first image information. The invention aims to provide a real-scene three-dimensional-based single-chip measurement method, so as to improve the measurement precision and reduce the cost.

Description

technical field [0001] The invention relates to the field of photogrammetry, in particular to a single-chip measurement method based on three-dimensional real scene. Background technique [0002] Aerial photography images reflect the target object according to the corresponding aerial photography regulations. Traditional photogrammetry mainly reconstructs the three-dimensional information of the ground object by constructing dense matching points of the same name within the image pair to obtain the desired results. However, in the specific production process, it is difficult to obtain data due to the narrow viewing angle of photographing and observation, no feature points in the observation area, fast-moving objects or long and narrow targets on the ground, thin slices or cables, etc., and it is impossible to obtain overlapping images of each area. Therefore, more and more attention is paid to obtaining the target information of ground objects by studying a single aerial pho...

AI Technical Summary

Problems solved by technology

[0008] First, the current performance is poor and the accuracy and reliability are weak. The single image extraction method is based on a single image to obtain the geometric size of the target object, and the amount of space is calculated based on the image square coordinates. Without depth information, it cannot meet the needs of roads, bridges, etc. in the process of urban development. Different perspectives and spatial precision requirements for facility data acquisition

Multi-slice stereo image pair extraction method, due to the differences in satellite attitude and spatial resolution of multi-temporal satellite stereo image pairs, the conditions for constructing stereo image pairs of different temporal satellite stereo image pairs are unstable, even if the elevation of the same name is stable There are also differences in the measurement results of the value, and the extraction results of the change information are even more inaccurate, and the current ability of the stock image is weak

Although multi-source data is a new application for the extraction of spatial information of target features, due to the influence of the currentness, reliability, production quality and efficiency of historical data, there are many types of data to be sorted, large capacity, and heavy workload, which cannot meet the needs of bridge facilities such as bridge facilities. Measuring currentness and reliability requirements

[0009] Second, the cost is high and the workload is heavy. The single image extraction method is suitable for the collection of spatial information of target objects in a small area. For a large area, it is impossible to collect all-element spatial information of the entire area. If it is regarded as several small areas, It will increase the workload of divisional operations and integration of results from each district

Multi-source data There are many types of data to be sorted, large capacity and heavy workload

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