Exploration hole geological record base drawing generation method based on parallel photography

Abstract

The invention relates to an exploration hole geological record base drawing generation method based on parallel photography. The method includes: using a shooting manner, that a shooting principal optical axis is parallel with a hole axis, based on the control manner of a movable control rack to shoot an image sequence along the central axis of an exploration hole; performing image distortion correction and single image space resection calculation to obtain exploration image data, with good image forming quality, of known interior and exterior orientation elements; correcting image projection, to be more specific, projecting an exploration hole original image with the image forming distortion influence being eliminated to object space to form an object space target image, and spreading into a plane according to the requirement to obtain a single exploration hole display image; generating a display image, to be more specific, splicing single display images in a certain section of the exploration hole to generate the image geological record base drawing. The method has the advantages that exploration hole geological information can be fast, efficiently and accurately collected and analyzed and processed, record result forms are enriched and are easy in informatization application, and the geological record precision requirement can be satisfied.

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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