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Ground static target real-time identifying and tracking method

A static target and ground technology, applied in character and pattern recognition, instruments, calculations, etc., can solve the problems of unable to extract features, affect recognition accuracy, and difficult to meet real-time performance, and achieve fast processing speed, strong adaptability, The effect of improving accuracy

Inactive Publication Date: 2010-09-08
HUAZHONG UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

[0016] (1) For higher-resolution image sequences, it is difficult to meet the real-time requirements while ensuring the recognition accuracy;
[0017] (2) For small targets in high-resolution image sequences, features cannot be extracted after the resolution is reduced, and the recognition accuracy will be greatly affected;

Method used

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  • Ground static target real-time identifying and tracking method

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Embodiment Construction

[0048] In this embodiment, a total of 98 frames of sequence images with a resolution of 502×502 (pixels) for software simulation are used for testing, and the target is a car (10×10, image 3 inside the black box). The concrete implementation process of the present invention is:

[0049] (1) The template generation step reads the pre-stored target template R (that is, the reference image containing the target that is matched with the real-time image, such as Figure 4 shown), size M r ×N r =128×128, drop K 1 = The image after 2 times the resolution is used as the template R X (size M rx ×N rx =32×32)( Figure 5 ), to the target template R (at this time K 2 =0) the target point as the center to intercept the partial image as the template R L (size M rl ×N rl =32×32)( Figure 6 );

[0050] The principle of resolution reduction is as follows: set the resolution reduction multiple to K, the original image is G(u, v), and the image after resolution reduction is F X (x...

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Abstract

The invention discloses a ground static target real-time identifying and tracking method, belongs to the field of imaging target automatic identification, and aims to identify small targets in high-resolution sequence images more accurately and feed identification results (target positions) back to a servo system in real time. The method comprises a temperature generation step, a low-resolution global identification step, a high-resolution local identification step, and a state transfer and judgment step. Aiming at normalized product correlation, the method has the characteristics of no influence of proportionality factor error, strong anti-white noise interference capacity and large calculation amount; and a method combining scene matching under a condition of low resolution and local exact matching under the condition of high resolution is adopted, so that the method reduces the calculation amount, effectively solves the problem of real-time exact identification of high-resolution small targets, meets the requirements on real-time of processing speed and the accuracy of identification under the condition of the high resolution, and has strong adaptability and simple calculation and operation.

Description

technical field [0001] The invention belongs to the field of automatic recognition of imaging targets, in particular to a method for real-time recognition and tracking of ground stationary targets. Background technique [0002] Image target matching and recognition technology is an important technology in the field of image processing. Fields such as terrain matching and target guidance of projection systems have extensive and important applications. Image target matching recognition technology is to spatially align two or more images of the same scene obtained by different sensors or the same sensor at different times and under different imaging conditions to determine the geometric correlation between them, and then Determine the location of the target to be identified. Due to the shooting time, shooting angle, changes in the natural environment, the use of multiple sensors and the defects of the sensor itself, the captured image is not only affected by noise, but also h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
Inventor 钟胜黎云张天序颜露新杜佐钱康烈张磊王建辉金明智
Owner HUAZHONG UNIV OF SCI & TECH
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