Wide-size-range multi-space target capture tracking method

Abstract

The invention relates to a wide-size-range multi-space target capture tracking method. The method comprises the steps that first, point targets and surface targets are synchronously extracted from an input video image, and the point targets obtained through extraction of the surface targets are removed through point target removal processing; second, a star map matching method or an interframe matching method is selected and utilized to identify locations of mass centers of images formed by unknown stars in the image, wherein target identification is performed by utilizing fixed star table information to remove fixed stars according to the star map matching method, and target identification is performed by use of the difference between motion vectors according to the interframe matching method; third, the identified locations of the mass centers of the images of the unknown stars are subjected to synchronous target tracking processing. According to the method, the possible location of a target in a next frame of image is speculated according to known motion vectors; the most adjacent image is found with the location being the center; the difference value of the locations of the mass centers of the target image in two continuous frames of is calculated to serve as the latest motion vector.

Description

technical field [0001] The present invention relates to a method for capturing and tracking space targets based on image processing, in particular to a method for capturing and tracking multiple space targets at the same time in which the size of the target in the input image has a wide range of variation, a large range of relative motion speed, and multiple space targets . Background technique [0002] The capture and tracking method of space targets refers to the method of capturing and tracking suspicious targets in space by using image, radar, laser and other detection means combined with signal processing technology based on the ground or on-orbit satellite platform detection equipment. Among them, suspicious targets mainly refer to space objects (including: unknown asteroids, artificial celestial bodies, etc.) other than the known natural stars represented by stars. [0003] When image-based detection equipment performs space target capture and tracking tasks, it main...

AI Technical Summary

Problems solved by technology

[0003] When image-based detection equipment performs space target capture and tracking tasks, it mainly faces the following technical difficulties: First, the image size of space targets varies in a large range, and it is difficult to use a unified method to locate the center of mass of the corresponding image of the target

Second, the relative motion speed of the space target and the detection equipment varies widely, so it is difficult to use a unified method to capture the target

Third, the working platform of the detection equipment is different, and it may not be possible to provide the visual axis pointing of the detector represented by the visible light camera under the inertial system as a guide

Fourth, the number of images of space objects in the image may not be unique, and it needs to be captured and tracked at the same time

[0004] The existing methods cannot solve the above problems at the same time, and the adaptability is not strong

Images