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A Method of Spaceborne Infrared Small Target Detection Based on FPGA

A small target detection and infrared technology, which is applied in image analysis, image enhancement, instruments, etc., can solve the problems of small target detection work difficulties, long distance of spaceborne cameras, and small target imaging area, so as to reduce target false detection and missed detection situation detection, interference mitigation, performance and resource utilization optimization

Active Publication Date: 2021-11-19
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Due to the long distance between the spaceborne camera and the target, the target imaging area is small, the contrast is low, there is no texture feature, and the shape changes, especially under complex background conditions, which makes the detection of small targets more difficult.

Method used

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  • A Method of Spaceborne Infrared Small Target Detection Based on FPGA
  • A Method of Spaceborne Infrared Small Target Detection Based on FPGA
  • A Method of Spaceborne Infrared Small Target Detection Based on FPGA

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Experimental program
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Embodiment 1

[0056] A kind of FPGA-based spaceborne infrared small target detection method adopts FPGA synchronization and executes the following steps 100 sequentially, such as figure 1 shown, including:

[0057] Step 110, receiving the data stream of the infrared image in real time, and saving the data stream;

[0058] Step 120, carry out binarization processing to data flow, obtain binary image and save, and determine the suspected target point in each frame binary image;

[0059] Step 130, determine whether the database has two adjacent frames of binary images of the frame of binary images, if not, perform step 110, if yes, obtain and based on the previous two frames of binary images, from the frame of binary images Identify the real target points among the suspected target points;

[0060] Step 140, all the real target points in the frame of binary image are marked with eight connected domains to obtain the target area in the frame of binary image, and the target detection is comple...

Embodiment 2

[0117] A kind of FPGA-based spaceborne infrared small target detection system, comprising: parallel to conversion chip, FPGA processor, and memory;

[0118] Parallel to conversion chip, used to receive the data stream of each frame of infrared image input through serial transmission, and perform parallel conversion on the data stream, so as to input the data stream to the FPGA processor through parallel transmission; FPGA processor, It is used to save the data stream to the memory; binarize the data stream to obtain a binary image and save it to the memory, and at the same time determine the suspected target point in each frame of the binary image; determine whether the frame of binary image exists in the memory If there is no binary image in the first two adjacent frames of the image, continue to receive the data stream. If there is, obtain and identify the real target point from the suspected target points in the binary image of the frame based on the binary image in the firs...

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Abstract

The present invention relates to an FPGA-based spaceborne infrared small target detection method and system, comprising: the infrared image data is transmitted to the system through a high-speed serial data interface, converted by an interface chip, and output parallel data to the FPGA; the FPGA first receives the image data, And cache the original image data in the external memory. Then, a single-frame detection is performed on the infrared image to obtain a single-frame suspected target point. Then, according to the inter-frame correlation of the target, the real target point is determined. Then mark the multi-frame detected image with eight connected domains, determine the target area and its position information, read out part of the original image data in the memory according to the position information, and output the data including the target position information and the target part image information. The invention adopts a global assembly line design, has fast processing speed, and is suitable for real-time detection of small spaceborne infrared targets.

Description

technical field [0001] The invention relates to the technical field of infrared target detection, in particular to an FPGA-based spaceborne small infrared target detection method and system. Background technique [0002] With the continuous development of modern aerospace technology, the real-time detection technology of infrared small targets under spaceborne conditions has always been an important research direction. As the image resolution on the star is getting higher and higher, the complexity of the algorithm is getting bigger and bigger, and the difficulty of real-time system is increasing. Therefore, it is of great significance to study the real-time processing system and method of spaceborne infrared small target detection. [0003] Due to the long distance between the spaceborne camera and the target, the target imaging area is small, the contrast is low, there is no texture feature, and the shape changes, especially under complex background conditions, which make...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/32G06T7/136G06T7/20G06T7/70
CPCG06T7/20G06T7/136G06T7/70G06T2207/10048G06T2207/10016G06T2207/20032G06V10/255G06V2201/07
Inventor 王岳环张清顺张磊张天序胡科
Owner HUAZHONG UNIV OF SCI & TECH