Infrared image-based weak and small moving target detecting method

Abstract

The invention discloses an infrared image-based weak and small moving target detecting method. The method disclosed by the invention comprises the steps of median background difference image generation, accumulated difference image generation, difference image segmentation, periodical motion area elimination and false target elimination. Concretely, the method comprises: establishing a grayscale histogram for each pixel to count the frequency of the appearance of the pixel on each grayscale in the latest time period, calculating a median to obtain median background, and calculating the absolute frame difference between the median background and a detected frame to obtain a median background difference image; calculating the frame difference between each two adjacent frames continuously, and accumulatively adding difference images to obtain an accumulated difference image; eliminating interference from periodical motion areas, and highlighting a real moving target; and finding a reasonable target track by using motion and grayscale consistency of the target. The method disclosed by the invention can accurately and continuously detect the weak and small moving target day and night at a remote distance, has high real-time performance and high robustness, and is easy to promote in application field of military robot battle reconnaissance, video monitoring and the like.

Description

technical field [0001] The invention belongs to the fields of computer vision and image analysis, in particular to a method for detecting weak and small moving targets based on infrared images. Background technique [0002] The detection of weak and small moving targets based on infrared images is an important detection technology in aerospace and military fields. At present, it has penetrated into some civilian fields, such as video surveillance, aviation, maritime security and so on. In recent years, incidents of Somali pirates hijacking ships have occurred frequently. Last year, my country began to dispatch several warships to escort commercial ships from various countries. However, due to the vast sea area, the actual role played is relatively limited, and more is just a deterrent effect. Most ships need to find suspicious ships around them and make precautionary preparations in advance. The weak moving target detection of infrared images is the key to early detection a...

AI Technical Summary

Problems solved by technology

However, the above method cannot detect weak and small targets accurately and continuously day and night, the time complexity is relatively high, real-time processing cannot be performed, and the system configuration is complex, the hardware cost is relatively high, and it is not easy to promote on a large scale

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