An image enhancement algorithm based on improved LOG operator

LUO Ping; HU Guang-bao; LÜ Xia-fu; KANG Jian

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An image enhancement algorithm based on improved LOG operator

更新时间：2026-09-04

- An image enhancement algorithm based on improved LOG operator
- Vol. 36, Issue 9, Pages: 26-29(2019)
- 作者机构：
  
  重庆邮电大学机构自动化学院,重庆,400065
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2019
- 稿件说明：
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罗萍, 胡光宝, 吕霞付, 康健. 基于改进LOG算子的图像增强算法[J]. 微电子学与计算机, 2019, 36(9): 26-29.

LUO Ping, HU Guang-bao, LÜ Xia-fu, et al. An image enhancement algorithm based on improved LOG operator[J]. 2019, 36(9): 26-29.
罗萍, 胡光宝, 吕霞付, 康健. 基于改进LOG算子的图像增强算法[J]. 微电子学与计算机, 2019, 36(9): 26-29. DOI：

LUO Ping, HU Guang-bao, LÜ Xia-fu, et al. An image enhancement algorithm based on improved LOG operator[J]. 2019, 36(9): 26-29. DOI：

摘要

针对传统的高斯-拉普拉斯(LOG)算子处理图像边缘存在各向同性特点的问题

提出了一种各向异性的LOG算法

使之在图像增强中能自适应地处理各个角度的边缘.首先在LOG函数的不同方向上取不同方差将尺度参数引入函数中

然后结合几何学

将角度参数引入带有尺度参数的算子中

最后根据每个像素点的梯度值来确定尺度参数和角度参数的值

得到各向异性的LOG算子.仿真结果表明

各向异性的LOG算子

在峰值信噪比、结构相似性和均方误差方面均优于各向同性的LOG算子

各向异性的LOG算子对噪声的抑制效果更好

图像边缘细节保留的更多.

Abstract

Aiming at the problem of the isotropic characteristics existed while dealing with image edges through traditional Gaussian-Laplace (LOG) operator

an anisotropic LOG algorithm is proposed to adaptively process image edge of various angles during image enhancement. Firstly

the scale parameters are introduced into the function by taking different variances in different directions of the LOG function. Then

combining with the geometry

the angle parameters are introduced into the operator with the scale parameters. Finally

the scale parameters are determined according to the gradient values of each pixel. The value of the angle parameter gives the anisotropic LOG operator. The simulation results show that the anisotropic LOG operator is superior to the isotropic LOG operator in terms of peak signal-to-noise ratio

structural similarity and mean square error. Thus the anisotropic LOG operator has more suppression effect on noise while retaining more image edge details.

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references

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