一种矿井动态图像增强方法
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摘要
针对矿井动态监控图像存在"雪花"噪声、图像灰度值较低、细节灰度差别较小等问题,提出一种动态图像增强方法。首先对原始图像进行改进的直方图均匀化处理,然后进行照度估计,对得到的光照度图像进行归一化修正,同时采用非线性动态增益对反射光图像进行修正。采用矿井机车管理系统采集的监控图像对该方法进行验证,结果表明经该方法处理的图像效果较好。
Aiming at noise,low image grey and little gray difference of dynamic monitoring image of coal mine,a dynamic image enhancement method was proposed.Original image is processed by an improved histogram equalization method firstly and then dealt with illumination estimatation.The illumination image is normalized,while reflected light image is revised by nonlinear dynamic gain.The experimental results by use of monitoring image from mine locomotive management system show that the method has better image processing effect.
Aiming at noise,low image grey and little gray difference of dynamic monitoring image of coal mine,a dynamic image enhancement method was proposed.Original image is processed by an improved histogram equalization method firstly and then dealt with illumination estimatation.The illumination image is normalized,while reflected light image is revised by nonlinear dynamic gain.The experimental results by use of monitoring image from mine locomotive management system show that the method has better image processing effect.
引文
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[3]赵京东.一种新的非均匀照度图像增强方法[J].计算机工程与应用,2011,47(23):204-207.
[4]储昭辉,汪荣贵,方帅.基于Retinex理论的小波域雾天图像增强方法[J].计算机工程与应用,2011,47(15):175-179.
[5]黄向东,邓莉洁.一种基于Retinex的矿井非均匀照度图像增强算法[J].科学技术与工程,2014,14(5):141-144.
[6]沈嘉励,张宇,王秀坛.一种夜视图像处理的新算法[J].中国图象图形学报,2000,5(6):479-483.
[7]ZHOU Q,QAKLEY J P.Low cost implementation for the multi-scale retinex filter[J].Journal of Electronic Imaging,2004,13(1):48-57.
[8]PROVENZI E,FIERRO M,RIZZI A,et al.Random spray Retinex:a new Retinex implementation to investigate the local properties of the model[J].IEEE Transactions on Image Processing,2007,16(1):162-171.
[9]刘博.基于直方图分成映射的图像增强算法研究[D].北京:燕山大学,2008.