基于时频域结合的数字图像增强算法研究  

Research on Digital Image Enhancement Algorithm Based on Combination of Time-Frequency Domain

作　　者：马亚明 张策 MA Yaming;ZHANG Ce(Anhui Sanlian College,Hefei Anhui 230601,China)

机构地区：[1]安徽三联学院,安徽合肥230601

出　　处：《信息与电脑》2022年第9期83-85,共3页Information & Computer

基　　金：安徽三联学院2020年省级科研项目“虚拟现实技术在合肥文旅IP打造中的应用研究”(项目编号:SK2020A0622)。

摘　　要：针对传统数字图像增强算法降噪性能差、图像锐化能力弱等不足,本文提出一种时频域结合的数字图像增强算法。首先,利用低通滤波器滤除数字图像中系统噪声和环境噪声干扰,实现数字图像的平滑滤波并去除噪声干扰;其次,从空间域优化的角度选用拉普拉斯算子增强对数字图像的边缘处理,改善图像的锐度和清晰度,并最大化保留图像的细节信息;最后,进行对比实验。实验结果显示,本文提出的时频域结合的数字图像增强优化算法,可以有效去除图像噪点,提升和改善数字图像的清晰度。Aiming at the shortcomings of traditional digital image enhancement algorithms,such as poor noise reduction performance and weak image sharpening ability,a digital image enhancement algorithm combined with time-frequency domain is proposed in this paper.Firstly,the low-pass filter is used to filter the system noise and environmental noise interference in the digital image,so as to realize the smooth filtering of the digital image and remove the noise interference;Secondly,from the perspective of spatial domain optimization,Laplace operator is selected to enhance the edge processing of digital image,improve the sharpness and clarity of image,and maximize the retention of image detail information;Finally,a comparative experiment is carried out.The experimental results show that the digital image enhancement optimization algorithm combined with time-frequency domain proposed in this paper can effectively remove image noise and improve the definition of digital image.

关 键 词：时频域 数字图像 增强算法 拉普拉斯算子 低通滤波器 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]