A method and device for fast detection of marine targets in SAR images

A detection method and target technology, applied in the field of image target recognition, can solve the problems of volume, weight, and power consumption limitations of the processing system, and achieve the effects of improving continuous processing capability, computing power and throughput, and increasing speed

Active Publication Date: 2020-01-21
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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Problems solved by technology

However, the space working environment has great limitations on the size, weight, and power consumption of the processing system. Therefore, there is an urgent need for a solution that can quickly detect SAR image targets with low complexity to adapt to space work. Various constraints imposed by the environment on the processing system

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  • A method and device for fast detection of marine targets in SAR images
  • A method and device for fast detection of marine targets in SAR images
  • A method and device for fast detection of marine targets in SAR images

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Embodiment Construction

[0067] According to the characteristics of the SAR image data of the ocean background, the invention improves the traditional ship target detection algorithm and optimizes the logic implementation of the arithmetic unit, so that the processing speed is greatly improved. The invention can further promote the miniaturization of the SAR image analysis equipment, and is beneficial to the popularization of related applications in aerospace.

[0068] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0069] Figure 4 An overall block diagram of a SAR image target recognition system according to an embodiment of the present invention is shown, and the target recognition system includes a bottom board, an input and output board, a signal processing board, a bottom board and a customized chassis with a power supply. The input and output board and the signal processing board are both installed on the base plat...

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Abstract

The present invention provides a method for fast detection of marine targets in SAR images, comprising: 1) making the detection window slide in the SAR image to be detected; 2) for the current detection window, comparing the grayscale of each pixel in the detection window 3) According to whether the number of bright spots in the current detection window exceeds the preset threshold number of bright spots, judge whether the current detection window is the target window; 4) Gather the target windows into the target window area of ​​interest. The invention can effectively improve the speed of target detection under the premise of limited processing system capability. The invention can effectively prevent the impact of continuous data on the aggregation module in the second stage of target detection, and improve the continuous processing capability of the module. The invention is suitable for the realization of FPGA, and can improve the computing capability and throughput of the system through the parallel processing of FPGA. The invention is convenient to adjust the size of the detection window flexibly.

Description

technical field [0001] The present invention relates to image target recognition technology, in particular, the present invention relates to a synthetic aperture radar (Synthetic Aperture Radar, referred to as SAR) image marine target rapid detection method and device. Background technique [0002] Synthetic aperture radar is a high-resolution microwave side-looking imaging radar. It uses the principle of pulse compression in range and synthetic aperture in azimuth to realize intuitive spatial visual images of the radar irradiation area. In addition to the characteristics of large-scale, high-resolution and fast observation of visible light and infrared remote sensors commonly used in remote sensing observations, synthetic aperture radar also has the characteristics of all-day, all-weather, and strong penetrating ability. Especially for the application of the ocean background, because the radar reflection coefficient of the water body is very low, it is beneficial to improve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/32
CPCG06V10/255
Inventor 饶全成符立姚萍王贞松
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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