A method for generating basemaps for geological catalogues of exploration caves based on parallel photography

Abstract

The present invention is a method for generating a geological catalog base map of an exploration hole based on parallel photography, which includes: parallel photography to obtain an image sequence: using a control method based on a movable control frame and a photography method in which the main optical axis of photography is parallel to the axis of the hole, along the middle of the exploration hole Axis shooting image sequence; image distortion correction and single image space resection calculation to obtain exploration hole image data with good conformation quality of known inner and outer azimuth elements; image projection correction: eliminate the impact of conformation distortion for exploration The original image of the hole is projected to the object space to form the object space target image and expanded into a plane as required to obtain a single display image of the exploration hole; display image generation: splicing the single display images in a certain section of the exploration hole to generate an image geological catalog Base map. The invention realizes fast, efficient and accurate collection and analysis processing of geological information of exploration holes, makes the cataloging results more abundant and easy to apply in information, and can meet the accuracy requirements of geological cataloging.

Description

technical field [0001] The invention relates to the technical field of photogrammetry, in particular to a method for generating a base map of geological records of exploration caves based on parallel photography. Background technique [0002] Geological cataloging is a technical process of describing, measuring and recording various geological phenomena in geological prospecting and exploration. material. Traditional geological catalogs are mainly based on geological sketches, relying on manual site surveys to draw geological structural lines, measure and mark the occurrence of structural planes. This kind of operation method has a large workload, high labor intensity, great interference from construction, and the geometric accuracy of the catalog is low, and the information feedback is slow. At the same time, the catalog results are not easy to be statistically analyzed and shared. It is no longer suitable for the development of real productivity and modern engineering. T...

AI Technical Summary

Problems solved by technology

The existing photographic geological recording technology is mainly suitable for large caverns. If it is directly used for geological recording of exploration caves, the operation efficiency will drop sharply due to the small coverage area of ​​the recording site, making this technology impractical

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