Infrared weak and small target detection and tracking method and device

Abstract

The invention discloses an infrared weak and small target detection and tracking method. According to an improved four-order partial differential equation method, an original infrared image is processed to obtain an infrared image with background suppression and target enhancement achieved, the position information and number information of candidate targets in the obtained infrared image are extracted according to a block adaptive threshold segmentation method, finally multi-target state and number estimation is carried out on the extracted position information and number information of the candidate targets according to Gaussian Mixture Cardinalized Probability Hypothesis Density (GM-CPHD) filter, and the states and number of multiple infrared weak and small targets are accurately and stably estimated through the GM-CPHD filter. The invention further discloses an infrared weak and small target detection and tracking device. Through the method and device, implementation is easy, the effect is obviously superior to that of a traditional background suppression method, the traditional multi-target tracking data association problem is avoided, and the multi-target states and number changing along with time can be estimated in time more stably.

Description

technical field [0001] The invention belongs to the technical field of infrared image processing and target tracking, and in particular relates to a detection and tracking method and a device for infrared weak and small targets. Background technique [0002] Infrared imaging technology works by receiving the infrared thermal radiation of the target, and has the advantages of complete passiveness, easy concealment, long operating distance, and can work day and night. It has been widely used in infrared precision guidance, early warning, video surveillance, search and tracking and other military affairs. and civil fields. Various applications of infrared imaging technology are inseparable from the support of high-performance infrared target detection and tracking technology. Therefore, it is of great significance to study the target detection and tracking technology of infrared imaging, especially the detection and tracking of infrared targets in complex backgrounds. A hot to...

AI Technical Summary

Problems solved by technology

For example, patent No. 201210275678.1, this invention patent uses the method of multi-hypothesis tracking data association to realize the search and tracking of small infrared targets. Data association is the core of the traditional multi-target tracking method, which largely determines the performance of the algorithm, and when complex When the wave data increases and the number of targets increases, there will be a problem of combination explosion. In a complex background, when the number of targets changes with time, there will be a problem of detection uncertainty, which will lead to uncertainty in data association.

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