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Target tracking method and device in starry sky background based on path coherence function

A technology for star background and target tracking, which is applied in the field of moving target tracking and can solve problems such as inaccurate tracking of star background targets.

Inactive Publication Date: 2018-12-21
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solved the problem of inaccurate target tracking on the background of the starry sky in the prior art

Method used

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  • Target tracking method and device in starry sky background based on path coherence function
  • Target tracking method and device in starry sky background based on path coherence function
  • Target tracking method and device in starry sky background based on path coherence function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] This embodiment provides a target tracking method based on the path continuity function under the background of the starry sky, which is used to identify and track moving targets in the starry sky, such as figure 1 Shown is the flow chart of the target tracking method under the background of the starry sky based on the path continuity function, and the method includes the following steps:

[0087] S101: receiving an image to be processed;

[0088] Among them, the image to be processed can be obtained in a variety of ways, such as the image to be processed captured by the camera of the ground observation station, the camera takes pictures continuously, obtains frame images arranged in chronological order, and sends the frame image as the image to be processed.

[0089] S102: Preprocessing the image to be processed by using a median filter method to remove noise interference;

[0090] Because there is often noise in the frame image data captured by the camera, which affe...

Embodiment 2

[0105] On the basis of Embodiment 1, this embodiment provides a preferred target tracking method based on the path continuity function under the background of the starry sky, such as figure 2 Shown is the flow chart of the target tracking method in the starry sky background based on the path coherence function.

[0106] The method includes the following steps:

[0107] S201: Receive an image to be processed;

[0108] Among them, the image to be processed can be acquired in a variety of ways, for example, the image to be processed is captured by the camera of the ground observation station, and the camera takes pictures continuously to obtain frame images arranged in chronological order, and send the frame images as the image to be processed.

[0109]S202: Use a 7*7 template to perform median filtering on the image to be processed, and extend a preset width at the boundary of the image to be processed to obtain a denoised image to be processed, and use the denoised image to b...

Embodiment 3

[0153] This embodiment provides a device for tracking a target under a starry sky background based on a path continuity function. Such as image 3Shown is the system block diagram of the object tracking device in the starry sky background based on the path coherence function. The device mainly includes an image receiving module 301, an image preprocessing module 302, an image conversion module 303, a target acquisition module 304, a target contour extraction module 305, a suspected target determination module 306, a first-level judgment module 307 and a second-level judgment module 308. specific,

[0154] The image receiving module 301 is used to receive the image information to be processed; wherein the image to be processed can be acquired in a variety of ways, for example, the image to be processed is captured by the camera of the ground observation station, and the camera takes pictures continuously to obtain frame images arranged in time order, And send the image to be ...

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Abstract

The invention discloses a target tracking method and a device under a starry sky background based on a path coherence function. The method comprises the following steps: receiving an image to be processed; The median filter method being used to process the image to remove noise interference. The background frame is established by mixed Gaussian model. Adopting frame difference algorithm to removebackground and obtain all moving targets in the image to be processed; Obtaining the contour data of all moving objects by morphological open operation; The contour data of all moving targets are input into the unscented Kalman filter model to obtain the moving trajectory of the moving targets and the suspected targets. Calculate the value of path coherence function of the suspected target, and exclude the false target according to the value of path coherence function; Calculating the deviation function of the target to be determined, and further eliminating the false target; Achieving real goals; The invention can improve the accuracy of target tracking.

Description

technical field [0001] The present invention relates to the field of moving target tracking, and more particularly, relates to a method and device for tracking targets under starry sky background based on path continuity function. Background technique [0002] With the advancement of science and technology and social development, satellites have been widely used in real life. The development of satellite application technology has brought convenience to people's daily life, opened up new paths for military reconnaissance and acquisition of earth resource information, and also brought new challenges. During the flight of the satellite, there are problems of long tracking distance, low contrast, low illumination and poor image signal-to-noise ratio under the background of the starry sky; during tracking, there are also problems such as high detector resolution, high frame rate and large amount of processed data, Tackle difficult problems in real time. Therefore, it is of gre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/40G06T7/254
CPCG06T7/254G06V20/13G06V10/30
Inventor 高昆吴穹庄幽文豆泽阳张廷华华梓铮
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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