Method for detecting spatial point target space-base on basis of track cataloguing model

A detection method and space point technology, applied in the field of target detection, to achieve the effects of high stability, rapid detection and recognition, and expansion of the search range

Inactive Publication Date: 2011-07-06
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0006] None of the above detection methods can well solve the requirement of real-time detection and long-term stable

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  • Method for detecting spatial point target space-base on basis of track cataloguing model
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  • Method for detecting spatial point target space-base on basis of track cataloguing model

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[0030] The present invention will be further described in detail below with reference to the drawings and examples.

[0031] Use the present invention to detect, identify and track moving space point targets in a complex starry sky background. The flowchart is as follows figure 1 As shown, the specific steps are:

[0032] 1) First, perform dead pixel removal, distortion correction and image filtering preprocessing on the collected real-time image data;

[0033] 2) Next, an adaptive threshold is determined for the preprocessed image data, and the threshold D calculation formula is:

[0034] D=a×(M+2)

[0035] Among them, M is the average gray value of the entire image, and a is the constant, and the selection range is between 1.8 and 2.4;

[0036] 3) Perform threshold segmentation on the collected images, the threshold segmentation formula is:

[0037] if f ( x , y ) ≥ D , f ( x , y ) = f ( x , y ) if f ( x , y ...

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Abstract

The invention discloses a method for detecting a spatial point target space-base on basis of a track cataloguing model. The method is used for performing threshold value partition and communicated domain calculation on a pretreated image, performing the track cataloguing on each communicated domain, and identifying and tracking the target according to the motion character and judgment probabilityof each track. The method is suitable for the visible-light spatial point target space-base detection in large view field. The searching scope is widened and the purpose of detecting as early as possible and alarming as quick as possible is achieved. The method can be used for detecting a plurality of targets in different motion modes at the same time and identifying and tracking the targets. Themethod can be used for quickly detecting, identifying and stably tracking the spatial point target.

Description

technical field [0001] The invention relates to target detection technology, in particular to a space-based detection method for a space point target moving under a complex starry sky background by using an orbit catalog model, which is mainly used for detection, identification, tracking and measurement of space targets. Background technique [0002] The space-based space target detection system refers to the processing of the observation image sequence acquired by the optical sensor, from which information such as the position and brightness of the target and background stars is extracted, and the space target is positioned, tracked, cataloged and maintained, and identified and classified. [0003] Qi Changsong proposed a concept of minimum distance feature between star points, constructing local minimum distance feature, and using recursive search method to detect moving objects according to the relative positional relationship between point groups. See Qi Changsong et al....

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Application Information

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IPC IPC(8): G01V8/10
Inventor 崔文楠张涛王磊凌丽童广辉杨波
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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