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Method for positioning slight expanded target based on gesture compensation

A positioning method and extended target technology, applied in the weak extended target positioning field of attitude compensation, can solve the problem of no longer adapting to tracking drift, etc., and achieve the effect of strong robustness

Active Publication Date: 2013-08-14
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

In this system, the target has no feature information to characterize and identify the target, and the ordinary target tracking and positioning technology, especially the tracking and positioning technology based on gray-scale correlation features, is no longer suitable (it will produce a huge tracking drift), so it is urgent New methods need to be studied to meet the engineering application requirements of tracking and positioning

Method used

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  • Method for positioning slight expanded target based on gesture compensation
  • Method for positioning slight expanded target based on gesture compensation
  • Method for positioning slight expanded target based on gesture compensation

Examples

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Embodiment Construction

[0017] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. This embodiment is carried out on the premise of the technical solution of the present invention, and the detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0018] This embodiment is based on the realization of target positioning, and the input image is a faint extended target image actually collected under the sky background.

[0019] Such as figure 1 As shown, this example provides a method for using attitude compensation to perform extended target tracking and positioning, including the following steps:

[0020] Step S1: Image preprocessing. Due to defects in lighting or imaging systems, acquired images to be processed will be affected by noise, thereby affecting subsequent processing. Therefore, before executing subsequent processing alg...

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Abstract

The invention provides a method for positioning a slight expanded target based on gesture compensation. The method comprises the following steps: firstly, pre-processing a to-be-processed image by adopting the Gauss smooth filtering to eliminate the influence of noise on a subsequent algorithm; secondly, obtaining a two-value edge of a single pixel by adopting an edge tracking method, and filtering peripheral points of the profile of a target to eliminate interfering points; thirdly, computing a momental ellipse of the target and parameters of the target by using the peripheral points of the profile of the target to confirm the gesture of the target; and finally, obtaining a translation parameter and a rotation parameter of the target by using the positioning method based on the gesture compensation. Therefore, through the adoption of the method, the fact that the target is positioned in the situations such as rotation, translation and scaling can be realized.

Description

technical field [0001] The invention belongs to the technical field of target detection and tracking in a photoelectric capture, tracking and aiming system, and relates to a weak extended target positioning method for attitude compensation, which is used for image processing, computer vision and target detection, tracking and positioning. Background technique [0002] In the photoelectric capture and aiming system, in order to improve the tracking accuracy, the field of view of the fine detector is relatively small, and the target size is too large. Thus in the subtle detector the object takes on the form of expansion. In the imaging of long-distance space targets, due to degrading factors such as atmospheric turbulence, system jitter, and optical system aberrations, the imaging of the target in the system is very blurred, which appears as a cluster of light spots in the shape of the outline of the target; in addition, the target has no texture information, and the shape Di...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T3/00G06T7/20
Inventor 祁小平李红川欧阳益民张建林魏宇星胡锦龙
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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