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Mobile platform ground movement object detection method

A technology of ground moving target and detection method, applied in the field of ground moving target detection of moving platform, to achieve the effects of reducing false detection rate, easy hardware implementation, and eliminating noise points

Active Publication Date: 2011-09-14
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0007] The invention provides a ground moving target detection method on a moving platform, which can solve the problems of image registration, motion salience inspection, and moving target detection under the condition of platform movement, and quickly and accurately extract moving objects from images for subsequent target tracking. , recognition and other image processing to provide the basis

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Embodiment Construction

[0045] Overall flow chart of the present invention is as figure 1 shown. Below in conjunction with accompanying drawing and example the present invention is described in further detail.

[0046] (1) Let the images of the (n-m)th frame, the nth frame, and the (n+m)th frame be f respectively n-m (x, y), f n (x, y), f n+m (x, y), respectively calculate its SIFT feature descriptor, n and m are positive integers, n-m>0;

[0047] The detailed SIFT feature descriptor calculation process includes detection of scale space extreme points, precise positioning of extreme points, specifying direction parameters for each key point, and generation of key point descriptors. The calculation method belongs to the mature technology in the prior art.

[0048] Figure (2a) is the (n-m)th frame image, and Figure (2b) is the corresponding SIFT feature detection result, where the arrow is the SIFT feature descriptor, and the starting point of the arrow is the key point coordinates corresponding to...

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Abstract

The invention discloses a mobile platform ground movement object detection method including the steps as follows: (1) respectively calculating SWIFT characteristic description of a (n-m)th frame image, an nth frame image and a (n+m)th frame image of an image sequence; (2) by taking the nth frame image as a reference, respectively registering the (n-m)th frame image and the (n+m)th frame image to obtain registration images; (3) respectively conducting space multiscale movement significance tests on the two registration images with the nth frame image; (4) calculating a difference absolute value image of the nth frame image and the (n-m)th frame registration image, and the difference absolute value image of the nth frame image and the (n+m)th frame registration image; (5) respectively calculating a difference image of the (n-m)th frame and the nth frame as well as a difference image of the nth frame and the (n+m)th frame; (6) mixing the two difference images to obtain a three-frame difference image and then conducting binaryzation; and (7) conducting morphological processing on a binary segmented image and then conducting region marking so as to obtain a final detection result image. The mobile platform ground movement object detection method solves the background compensation problem under the condition of a moving platform and has very good robustness on the light change and background interference in a scene as well as image deformation caused by platform movement.

Description

technical field [0001] The invention belongs to the field of science and technology crossed by computer vision and aerospace technology, and in particular relates to a method for detecting a ground moving target on a moving platform. Background technique [0002] There are mainly two modes for moving target detection: static platform and dynamic platform. The moving target detection and tracking technology in the case of a static platform is relatively mature, while the moving target detection and tracking technology in the case of a moving platform is still under development. For the static platform moving target detection task, the image background remains unchanged, the background model is usually known, and the moving target detection is relatively easy. Moving target detection on moving platforms is an important research problem in computer vision, video image tracking and other application fields. The moving target detection algorithm of the moving platform is much m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/20
Inventor 张天序李高飞李浩许迪卢海风易可佳高慧杰
Owner HUAZHONG UNIV OF SCI & TECH
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