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A method for detecting sea antennas in infrared images based on row gradient accumulation

An infrared image and gradient accumulation technology, applied in image enhancement, image analysis, image data processing, etc., can solve problems such as unsatisfactory, low signal-to-noise ratio, and multi-interference effects, and achieve high accuracy, small amount of calculation, The effect of less calculation

Active Publication Date: 2018-05-04
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

Like the line scan method, it is not ideal for low signal-to-noise ratio and multiple interference

Method used

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  • A method for detecting sea antennas in infrared images based on row gradient accumulation
  • A method for detecting sea antennas in infrared images based on row gradient accumulation
  • A method for detecting sea antennas in infrared images based on row gradient accumulation

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Embodiment Construction

[0065] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0066] ① Input the preprocessed sea antenna infrared image to be detected;

[0067] ② Calculate the row gradient;

[0068] ③ Calculate the line gradient sum, and select several peaks from them, and record the number of lines where they are located, as the candidate position of the sea antenna;

[0069] ④ Select the position of the candidate sea antenna in turn, and calculate the difference between the average gray value and the average line gradient of the area above and below the candidate sea antenna;

[0070] ⑤ Create an evaluation function, synthesize the known data, and obtain the position of the sea antenna through comprehensive evaluation;

[0071] ⑥ Output the sea antenna position information to the original image.

[0072] In the present invention, the specific process of step ② is: read in the infrared image preprocessed by ①, and ...

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Abstract

The invention discloses an algorithm for detecting an infrared image sea antenna based on row gradient accumulation, and belongs to the field of sea-sky environment infrared image processing and application. The present invention is based on the line image gradient, combined with the traditional line scanning sea-antenna extraction algorithm, to calculate the line gradient sum, but does not perform absolute value processing, and further calculates the regional average gray level difference, regional average row gradient difference, etc. in the candidate peak The characteristics of the sea-sky area, the comprehensive data can be used to judge the sea-sky area. Obtaining the sea antenna will give you a preliminary understanding of the original image structure, which will greatly reduce the calculation amount of subsequent processing, such as image segmentation, ship recognition, etc., which is convenient for analysis and practical application. Tests on multiple images show that this method improves accuracy, reliability and operating efficiency compared with traditional methods.

Description

technical field [0001] The invention relates to the field of infrared sea-sky image detection, in particular to automatic sea-sky detection. Background technique [0002] In the ship recognition system under the background of sea and sky, sea antenna detection is an important link in the recognition and tracking of ship targets in infrared images. On the one hand, the original image has a wide imaging range. If the approximate range of the ship target is not initially determined, the efficiency of target recognition will be greatly reduced. According to experience, when the ship is at a relatively long distance (greater than 6 kilometers), the original image can be divided into three regions: the sky, the sea line, and the sea surface. The detection of the sea antenna can roughly distinguish these three areas. After obtaining the position information of the sea antenna, only the area near the sea antenna needs to be detected, which reduces the amount of computation. On the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/13G06T7/41
CPCG06T2207/10048
Inventor 燕肇一彭真明罗宽怀杨维王浩正黄少寅汪劲希
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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