FPGA-based (field programmable gate array-based) infrared image preprocessing method

An infrared image and preprocessing technology, applied in the field of image processing, can solve the problems of low image processing efficiency, high power consumption, complex infrared image processing circuit structure, etc. Effect

Active Publication Date: 2013-04-17
LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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Problems solved by technology

[0003] The purpose of the present invention is to provide an infrared image preprocessing method based on FPGA to solve the probl...

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  • FPGA-based (field programmable gate array-based) infrared image preprocessing method
  • FPGA-based (field programmable gate array-based) infrared image preprocessing method
  • FPGA-based (field programmable gate array-based) infrared image preprocessing method

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[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] Such as figure 1 and figure 2 As shown, the infrared image preprocessing is divided into the calculation of the non-uniform correction coefficient and real-time processing. In order to ensure the real-time performance of the system, the infrared image preprocessing starts from the beginning of each frame signal. After the start of each frame signal, if the communication module receives the non-uniform correction coefficient calculation command sent by the host computer, the non-uniform correction coefficient calculation device using SOPC soft core will calculate the non-uniform correction coefficient and write the calculation result into the coefficient in memory. The calculation of the non-uniformity correction coefficient in this embodiment is completed by statically collecting the response of a single frame of infrared images or the average of th...

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Abstract

The invention relates to an FPGA-based infrared image preprocessing method. The method adopts a programmable logic singlechip FPGA with a built-in system on programmable chip SOPC and a small quantity of peripheral circuits to preprocess infrared images, the FPGA carries out all of infrared image nonuniformity correction coefficient calculation, histogram statistics, infrared image nonuniformity correction, infrared image blind pixel replacement, grey level transformation and the like, a digital signal processor DSP is not required to take part in calculation, the system structure is miniaturized, and the method solves the problems of complex circuit structure, high power consumption and low image processing efficiency of the conventional infrared image processing circuit.

Description

technical field [0001] The invention relates to the field of image processing, in particular to an FPGA-based infrared image preprocessing method. Background technique [0002] In recent years, infrared imaging systems have been widely used in missile guidance, infrared forward-looking, infrared search and tracking and other fields. In the infrared image processing system, the infrared image must be processed through data acquisition, analog signal digitization, non-uniformity correction and grayscale transformation, among which the preprocessing work of infrared images such as non-uniformity correction, histogram statistics, and linear transformation The main job of the system. At present, the system architecture form of field programmable gate array FPGA+digital signal processor DSP is widely used to realize the above functions. Among them, FPGA completes data acquisition control, infrared image non-uniform correction, data transfer and other work, and DSP relies on its p...

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Application Information

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IPC IPC(8): G06T1/00
Inventor 赵凯生汪江华潘晓东孙小亮
Owner LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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