Image caching and tracking method capable of overcoming wireless link delay characteristic

A wireless link and image tracking technology, applied in image communication, image analysis, image data processing, etc., can solve problems such as heavy workload, large error in wireless link estimation, low success rate of tracking target capture, etc. Achieve the effect of improving success rate, tracking speed and high delay accuracy

Active Publication Date: 2015-04-29
BEIJING INST OF AEROSPACE CONTROL DEVICES
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  • Claims
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AI Technical Summary

Problems solved by technology

However, because the wireless link delay is affected by many factors, the estimation error is large, and the ground station image operator also needs to track and add moments to the fast moving target on the image, resulting in a low tracking target capture success rate and a large workload

Method used

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  • Image caching and tracking method capable of overcoming wireless link delay characteristic
  • Image caching and tracking method capable of overcoming wireless link delay characteristic
  • Image caching and tracking method capable of overcoming wireless link delay characteristic

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Embodiment Construction

[0040] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0041] Image tracking frame delay includes two delays: the uplink delay caused by the ground station tracking command being sent to the airborne platform through the uplink wireless link, and the real-time image sent from the airborne platform to the ground station through the wireless link. downlink delay. Among them, the uplink delay will cause the image picture processed by the airborne platform to be different from the picture seen by the ground station when the airborne platform receives the control command; the downlink delay will cause the image picture seen by the ground station to be different from the picture seen by the airborne platform Therefore, these two delays will cause the tracking target captured by the airborne platform to be inconsistent with the tracking target that the ground station needs to capture.

[0042] The image b...

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Abstract

The invention provides an image caching and tracking method capable of overcoming a wireless link delay characteristic. The method is implemented by an image caching and tracking system which comprises an information processing module, an FPGA (field programmable gate array) module, a caching module and an image tracking picture switching module. According to the method, the image caching module is used for caching image data in real time, and the cached data are extracted and processed according to wireless link delay values obtained through calculation during tracking, so that the problem that grabbing of tracking targets by a ground station is not consistent with grabbing of tracking targets by an airborne reconnaissance platform due to wireless link delay can be effectively solved, the target grabbing success rate and the tracking speed are increased, the fact that the remote wireless tracking target grabbing success rate is affected by the wireless link delay problem caused by factors such as image compression, the ground environment, peripheral electromagnetic interference and the like is effectively avoided, the target grabbing success rate is high, the grabbing difficulty is low, and the working efficiency of image tracking operators is substantially improved.

Description

technical field [0001] The present invention relates to an airborne image buffering and tracking method, in particular to an image buffering and tracking method that overcomes the delay characteristics of wireless links, which is applicable to the shooting field of airborne and vehicle-mounted wireless control link target capture conditions, and can be expanded according to user needs. It is used in remote data real-time processing and other fields. Background technique [0002] The wireless link of the airborne remote control realizes the transmission of target tracking data while being affected by a large amount of data compression and decompression, environmental factors around the ground, and electromagnetic interference around the ground station. In order to ensure the consistency of the target captured and tracked by the platform and the target captured and tracked by the ground station, the image tracking method must simultaneously solve the problem of fast storage of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00H04N7/18
CPCG06T7/292H04N7/181
Inventor 丁楠袁鑫景彦哲
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES
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