Image target seeking laser imaging distance measurement method and device

Abstract

The invention discloses an image target seeking laser imaging distance measurement method and an image target seeking laser imaging distance measurement device. The method comprises the following steps of: imaging environment where a target is positioned in a non-gating imaging mode, and outputting a digital panorama to realize image target seeking; opening a distance measurement function, outputting a target-containing panoramic frame, selecting the target by a user, and opening the distance measurement function; obtaining a background frame in a distance measurement timing mode, constructing spatial slices with triangular distance energy envelope through distance gating imaging, performing slice scanning on a foresight field, and outputting slice frames; and when a target distance is subjected to inversion, performing differential processing on all the slice frames and the background frame to obtain new slice frames in which background influence is eliminated, and automatically calculating distance information of the target based on a mapping relation between the image gray scale ratio of a main window area among adjacent new slice frames and a distance energy ratio, which is established according to a distance gating echo broadening effect, by using a system, so that target distance measurement is finished. The method and the device are high in adaptability and easy to operate, target distance measurement is easy to realize, and particularly the problem that the distance of a small target is difficult to measure can be solved.

Description

technical field [0001] The invention relates to the technical field of laser distance measurement, in particular to an image homing laser imaging distance measurement method and device. Background technique [0002] Laser rangefinders are widely used in geological exploration, battlefield target measurement, industrial measurement and control, water conservancy construction, urban planning and other fields due to their non-contact measurement, long operating distance, high ranging accuracy, and convenient operation. The common laser range finders on the market today are all non-imaging range finders, which use a laser beam with a small divergence angle to irradiate the target to form a laser measurement point, and use a point detector to receive the reflected or scattered laser signal from the measurement point. The target distance is obtained by inversion. Because the size of the laser spot formed when the laser is irradiated on the target is very small, it leads to the di...

AI Technical Summary

Problems solved by technology

The laser imaging rangefinder mainly uses the laser imaging subsystem to replace the aiming telescope, and still uses the reticle to aim at the target. Therefore, it is essentially the same as the traditional telescope-type laser rangefinder, and it is still sensitive to impact, and the laser beam is difficult to detect. Form an effective measurement point for long-distance small targets

[0006] To sum up, the divergence angle of the laser beam of the current laser range finder is very small, and the laser measurement point on the target is relatively small when measuring the distance. difficult question

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