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Video sar moving target detection method based on image area accumulation

A moving target and image area technology, applied in the field of data processing, can solve the problems of prone to false alarms, high missed alarms, and deterioration of detection performance of high maneuvering target points, reducing calculation, improving detection accuracy, removing static shadows and The effect of blinking a false moving target

Active Publication Date: 2022-03-04
XIDIAN UNIV
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Problems solved by technology

These two methods are based on the operation of image pixels. Since the relationship between the pixels of the shadow of the moving target and the temporal change relationship of the shadow between frames are not considered, it is easy to have false alarms and excessively high missing alarms, resulting in low-speed targets and low-speed targets. Deteriorated detection performance for highly maneuvering target points

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  • Video sar moving target detection method based on image area accumulation
  • Video sar moving target detection method based on image area accumulation
  • Video sar moving target detection method based on image area accumulation

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Embodiment Construction

[0031] The embodiments and effects of the present invention will be further described below in conjunction with the accompanying drawings.

[0032] refer to figure 1 , the implementation steps of the present invention are as follows:

[0033] Step 1: Design the accumulation window and perform regional accumulation on the high frame rate video SAR image sequence.

[0034] 1.1) Set the accumulation window size N:

[0035] The size of the accumulation window is determined by the resolution of the video SAR image sequence and the size of the moving target in the image. If the window size is too small, the shadow area cannot be effectively accumulated, and if the window size is too large, the resolution of the image sequence will be deteriorated. The design rule of the accumulation window is to be equal to the shadow size of the moving object and not larger than the shadow size of the moving object, so as to ensure that the partial shadow area can be completely covered by the acc...

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Abstract

The invention discloses a video SAR moving target detection method based on image area accumulation, which mainly solves the problem of unsteady detection of the existing video SAR moving target. The realization scheme is as follows: 1) Design the accumulation window and perform regional accumulation on the video SAR image sequence; 2) Determine the accumulation threshold and perform image reconstruction on the accumulation result; 3) Binary segmentation of the reconstructed image; The image after value segmentation carries out the size statistics of the connected domain and retains the connected domain whose size is within the range of 0.4 times the total number of pixels occupied by the target and 2 times the total number of pixels occupied by the target; 5) performs inter-frame correlation on the processed image of the connected domain Processing removes non-target shadows and completes moving target detection. The invention effectively suppresses the probability of false alarms and missing alarms and improves detection performance by performing regional multi-frame joint detection on video SAR images, and can be used for tracking and real-time detection of video SAR moving targets.

Description

technical field [0001] The invention belongs to the technical field of data processing, in particular to a method for detecting a SAR moving target, which can be used for tracking and real-time detection of a video SAR moving target. Background technique [0002] Video SAR imaging radar can perform real-time imaging of ground target areas all day, all weather, and with high precision. It has the characteristics of high imaging frame rate and high resolution, and can effectively overcome the vulnerability of infrared / visible light sensors to weather conditions and battlefield environments. At the same time, it can also overcome the shortcomings of conventional SAR systems such as low frame rate and difficulty in detecting and tracking moving targets. During video SAR imaging, the moving target image will be defocused and shifted, but it will leave a shadow in its real position, and the imaging shadow will move in the image sequence obtained in the video imaging mode. Therefo...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/215G06T7/187
CPCG06T7/215G06T7/187G06T2207/10016G06T2207/10044
Inventor 丁金闪仲超徐众柯凌
Owner XIDIAN UNIV
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