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Circuit and method for realizing platform histogram equalization processing function of infrared image

A technology of histogram equalization and histogram equalization, which is applied in the field of image processing, can solve problems such as excessive contrast of output infrared images, and achieve the effects of good image processing effect, stable and reliable working performance, and fast and convenient processing process.

Active Publication Date: 2018-03-30
CRM ICBG (WUXI) CO LTD
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AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to overcome the shortcomings in the above-mentioned prior art, to provide a method that can effectively solve the problems of excessive contrast of the output infrared image and the real-time processing of the equalization algorithm, save system resources, have good image processing effects, simple and practical structure, and process A circuit and method for realizing the platform histogram equalization processing function of infrared images, which is fast and convenient, has stable and reliable working performance, and has a wide range of applications

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  • Circuit and method for realizing platform histogram equalization processing function of infrared image
  • Circuit and method for realizing platform histogram equalization processing function of infrared image
  • Circuit and method for realizing platform histogram equalization processing function of infrared image

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Embodiment Construction

[0059] In order to understand the technical content of the present invention more clearly, the following examples are given in detail.

[0060] see figure 1 As shown, the circuit that implements the platform histogram equalization processing function for infrared images, wherein the circuit includes:

[0061] (1) The histogram statistical module, which counts the number of pixels in each gray level in the infrared image to be processed, and obtains the corresponding histogram information;

[0062] (2) The mapping function accumulation module is connected with the histogram statistics module, and performs accumulation operation on the histogram information to obtain the histogram distribution information, and outputs the upper effective gray threshold and the lower effective gray threshold of the original image threshold;

[0063] (3) a histogram equalization processing module, connected to the mapping function accumulation module, and performing histogram equalization proces...

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Abstract

The invention relates to a circuit for realizing the platform histogram equalization processing function on infrared images, which includes a histogram statistics module, a mapping function accumulation module, a histogram equalization processing module and a memory selection module. The invention also relates to a method for realizing platform histogram equalization processing on infrared images based on the circuit. Using this circuit and method for realizing the platform histogram equalization processing function of infrared images, no external frame buffer (off-chip SDRAM) is required, only FPGA internal memory resources are required, and the input can be flexibly configured according to the actual image, and the input image Adjust to the relative best, avoid the problem of excessive contrast of the basic histogram equalization target background, make it possible to effectively solve the problem of excessive contrast of the output infrared image and real-time processing of the equalization algorithm, save system resources, image processing effect is good, and the structure is simple Practical, fast and convenient processing, stable and reliable working performance, and a wide range of applications.

Description

technical field [0001] The invention relates to the field of image processing, in particular to the field of image enhancement and equalization processing and probability statistics technology, and specifically refers to a circuit and method for realizing the function of infrared image equalization processing on a platform histogram. Background technique [0002] In the field of infrared image enhancement, the traditional histogram equalization algorithm (HE) has become a more common algorithm due to its simplicity and effectiveness. The basic algorithm idea is to determine the gray value of the output image according to the gray probability distribution function of the input image. Make the distribution of each gray level relatively uniform and improve the contrast. [0003] The main steps of the algorithm: [0004] (1) Statistical histogram distribution of each gray level of the original image (gray level statistics can be reduced); [0005] (2) Calculate the cumulative ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00G06T5/40
Inventor 龚亮
Owner CRM ICBG (WUXI) CO LTD
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