Real-time point target detection method in ultraviolet visible light video

Abstract

The invention discloses a real-time point target detection method in an ultraviolet visible light video, which comprises steps: (1) a target position information table is built; (2) search parameters are initialized; (3) an image is read and filtering is carried out; (4) binarization processing is carried out; (5) whether the information table is empty is judged, and if yes, an ultraviolet target is searched in the whole image, and the information table is updated; (6) the center position of a candidate target point in the information table serves as a search center, searching is carried out in a certain range, the information table is updated when a target exists, and the seventh step is carried out, and the candidate target is cancelled in the information table without a target, and the third step is carried out; (7) if the target point in the information table appears for more times than a preset threshold n, an alarm is given, and fusion with the frame image of the visible light is carried out; and (8) steps from (3) to (7) are repeated until all image frames in the video are processed. The false alarm probability can be effectively reduced, the target detection probability is improved, and the target can be accurately positioned and analyzed.

Description

technical field

[0001] The invention belongs to the field of video information processing, and relates to a real-time detection and fusion method of a midpoint target in an ultraviolet-visible light video, which can be used for detecting and recognizing targets in the ultraviolet-visible light video. Background technique

[0002] When the traditional infrared search and rescue instrument is used for airborne large-scale search and rescue, the infrared target is basically submerged in the noise background, and the signal-to-noise ratio is low, which brings great difficulties to the search and rescue work. Since the ground background has no clutter in the ultraviolet band and there are few sources of interference targets, the signal-to-noise ratio of the ultraviolet signal received by the detector is high. Therefore, the way of using ultraviolet search and rescue emerges at the historic moment.

[0003] In ultraviolet detection, the target is point-shaped, without obvious sha...

Examples

Embodiment Construction

[0022] like figure 1 Shown is the flowchart of the method of the present invention. figure 2 It is the basic idea of ​​the method of the present invention, wherein (a), (b), (c) represent three consecutive frames of images, and the black point in the figure represents the ultraviolet signal, and when there is a signal in (a), take the signal as the center In (b), use this area as the search range to judge whether there is an ultraviolet signal, and then take the signal in (b) as the center to search for the signal in the corresponding area in (c), and trigger an alarm if there is a signal.

[0023] The main steps of the inventive method are as follows:

[0024] (1) Establish a target location information table, which is used to record the geographic coordinates of the target and the number of times the target occurs;

[0025] (2) Take pictures of the same search and rescue area at the same time by means of ultraviolet light and visible light, shoot m frames per second, and ...

technical field

[0001] The invention belongs to the field of video information processing, and relates to a real-time detection and fusion method of a midpoint target in an ultraviolet-visible light video, which can be used for detecting and recognizing targets in the ultraviolet-visible light video. Background technique

[0002] When the traditional infrared search and rescue instrument is used for airborne large-scale search and rescue, the infrared target is basically submerged in the noise background, and the signal-to-noise ratio is low, which brings great difficulties to the search and rescue work. Since the ground background has no clutter in the ultraviolet band and there are few sources of interference targets, the signal-to-noise ratio of the ultraviolet signal received by the detector is high. Therefore, the way of using ultraviolet search and rescue emerges at the historic moment.

[0003] In ultraviolet detection, the target is point-shaped, without obvious sha...

Examples

Embodiment Construction

[0022] like figure 1 Shown is the flowchart of the method of the present invention. figure 2 It is the basic idea of ​​the method of the present invention, wherein (a), (b), (c) represent three consecutive frames of images, and the black point in the figure represents the ultraviolet signal, and when there is a signal in (a), take the signal as the center In (b), use this area as the search range to judge whether there is an ultraviolet signal, and then take the signal in (b) as the center to search for the signal in the corresponding area in (c), and trigger an alarm if there is a signal.

[0023] The main steps of the inventive method are as follows:

[0024] (1) Establish a target location information table, which is used to record the geographic coordinates of the target and the number of times the target occurs;

[0025] (2) Take pictures of the same search and rescue area at the same time by means of ultraviolet light and visible light, shoot m frames per second, and ...

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