Local-information-based infrared weak target detection method in complex background

Abstract

The invention, which belongs to the technical field of computer vision images, discloses a local-information-based infrared weak target detection method in a complex background. According to the invention, a filtering structure is constructed by using one point v0 in a to-be-detected image as the center, wherein the filtering structure includes a protection frame and a filtering window; a plurality of directions that use the point v0 as the center and point to the filtering window are found out, wherein the plurality of directions are evenly distributed; weighted gray values from the protection frame to the filtering window in the multiple directions are calculated respectively and one value closest to the point v0 gray value among obtained results is used as a background estimation valueof the point v0; the filtering window slides in the to-be-detected image to obtain background estimation value of all points and a background estimation image is formed; the background estimation image and the to-be-detected infrared image are differentiated to obtain a difference image; and then target segmentation and extraction are carried out on the difference image to obtain a target detection result. With the method provided by the invention, clutter interferences of the edge information and the edge intersection part in the complex background can be suppressed effectively; adaptation tothe bright and dark targets is improved; and the target detection effect is improved effectively.

Description

technical field [0001] The invention belongs to the technical field of computer vision images, and more specifically relates to a method for detecting dim and small infrared targets in complex backgrounds based on local information. Background technique [0002] With the rapid development of infrared technology, target detection in infrared images has applications in many aspects such as precise guidance and long-range early warning. With the further development of technology, improving the detection range of the detection system is an important factor in the infrared detection algorithm, and the infrared small target detection method, as a key technology for long-distance target detection, has been focused on research. [0003] When the target is far away from the infrared detector, the target often appears as a small target in the infrared image. Because the target occupies too few pixels in the infrared image, it lacks effective features (texture, color, shape, etc.) Est...

AI Technical Summary

Problems solved by technology

This solves the problem of inaccurate processing of complex backgrounds in the prediction of mid-infrared weak and small targets in the prior art

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