基于改进型LOG算子的图像增强方法在InGaAs宽光谱红外器件中的应用  

Image Enhancement Method Based on Modified LOG Operator in the Application of InGaAs Wide Spectrum Infrared Device

作　　者：葛朋[1,2] 李龙[1,2] 潘治云[2] 史衍丽[1,2] 

机构地区：[1]昆明物理研究所,云南昆明650223 [2]北方夜视技术股份有限公司,云南昆明650217

出　　处：《红外技术》2016年第8期670-677,共8页Infrared Technology

基　　金：云南省重点基金项目(2015FA00);昆明市科技计划项目(2015-2-R-01728);云南省应用基础研究计划重大项目(2016FC002)

摘　　要：传统的LOG(高斯-拉普拉斯)算子,由于高斯函数关于中心对称,故它具有各向同性的特点,不能对不同方向的边缘进行有效地检测。基于此,建立并推导了一种改进型的LOG算子,引入了尺度参量和角度参量,改进后的LOG算子是各向异性的,能对不同方向的边缘更有效地检测,从而能更好地增强图像中目标细节。将这种改进后的LOG算子用在InGaAs宽光谱红外器件上,对其所成图像进行图像增强,经过在MATLAB里对于同一幅图像进行比较试验,结果表明相比于传统的高斯-拉普拉斯算子,改进型LOG算子检测到的图像边缘更多,同时对噪声的抑制效果更好,图像细节增强效果更好。Traditional LOG（Gauss-Laplacian） operator, as a result of which the Gaussian function is symmetrical about the center, it is isotropic, unable to effectively detect the edge of different directions. Based on it, a modified EOG operator has been set up and derived. Owing to the introduction of the scale parameter and angle parameter, the improved LOG operator has the characteristics of anisotropy, on the edge of the different directions it can better effectively detect, which can better enhance image target in details. Using the modified LOG operator in the InGaAs wide spectrum infrared device to enhance its image, after comparison test for the same image in MATLAB, results show that compared with the traditional Gauss-Laptacian, the improved LOG operator detect image edges more, at the same time it is better for noise suppression and image detail enhancement effect.

关 键 词：高斯-拉普拉斯算子 图像增强 高斯函数 InGaAs宽光谱器件 

分 类 号：TN215[电子电信—物理电子学] TN911.73