Ranging method based on image matching, storage medium and electronic equipment

Abstract

The invention discloses a distance measurement method based on image matching, a storage medium and electronic equipment. The method comprises the following steps: S1, collecting an image of a to-be-measured target; s2, performing three-dimensional correction on the acquired image according to the three-dimensional correction matrix; s3, extracting edge features of the image after three-dimensional correction; s4, performing stereo matching by using a semi-global stereo matching algorithm to obtain a sparse disparity map; s5, adaptive sampling is carried out on the sparse disparity map, and a dense disparity map is recovered; and S6, solving the distance between the detection point and the to-be-detected target according to the dense disparity map. According to the scheme, the edge features of the to-be-detected target are extracted and then stereo matching is performed, so that the matching calculation amount is greatly reduced, and the real-time performance of stereo matching is improved. And meanwhile, the sparse disparity map is recovered into a dense disparity map by adopting a self-adaptive sampling algorithm, so that the integrity and the accuracy of distance measurement are ensured.

Description

technical field [0001] The invention relates to the field of distance measurement, in particular to an image matching-based distance measurement method, a storage medium and an electronic device. Background technique [0002] Most of the existing reconnaissance and indication systems use laser ranging. Laser ranging is an active ranging method, which requires active laser emission. The pulse method commonly used in long-distance ranging is to measure the propagation time from laser emission to reception to determine the distance to the target. The fatal disadvantage of this active ranging method is that it has poor concealment and is easy to expose itself. Although the laser in the invisible wavelength band can be used, the other party can still detect and counteract it through photoelectric detectors. [0003] The passive ranging method is to analyze and determine the distance of the object by detecting the light radiation of the object itself. The advantage is that it has ...

AI Technical Summary

Problems solved by technology

In practical applications, many existing image matching algorithms have the following problems: (1) the matching efficiency needs to be improved to meet the real-time performance of the system; (2) the matching results are greatly affected by changes in the environment and illumination; The matching of objects with irregular shapes is not yet suitable; (4) interfered by complex backgrounds, etc.

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