基于离散小波变换的图像感知对比度增强数学模型构建  

Construction of discrete wavelet transform based mathematical model for image perception contrast enhancement

作　　者：王慧[1] 冯金顺[1] WANG Hui;FENG Jinshun(Nanyang Institute of Technology,Nanyang 473000,China)

机构地区：[1]南阳理工学院,河南南阳473000

出　　处：《现代电子技术》2020年第19期19-22,共4页Modern Electronics Technique

摘　　要：针对传统图像感知对比度增强数学模型的图像感知对比度增强效果较差的问题,提出一种基于离散小波变换的图像感知对比度增强数学模型。利用局部均衡直方图、离散小波变换对图像进行灰度处理,利用Ostu算法对图像目标进行分割,并计算灰度分布均衡图像的感知对比度最佳阈值,实现图像感知对比度增强数学模型的构建。为了验证该数学模型的图像感知对比度增强效果,将所提模型与传统模型进行对比实验,实验结果证明该模型的图像感知对比度增强效果优于传统数学模型,说明该模型更适用于图像感知对比度的增强。In view of the poor effect of the traditional image perceptual contrast enhancement mathematical models,an image perceptual contrast enhancement mathematical model based on discrete wavelet transform is proposed.The image is processed by local equalization histogram and discrete wavelet transform,and then the image object is segmented by Ostu algorithm.The optimal threshold of perceptual contrast of gray-scale distribution balanced image is calculated to realize the construction of image perceptual contrast enhancement mathematical model.In order to verify the image perceptual contrast enhancement effect of the mathematical model,the proposed model is compared with the traditional models.The experimental results show that the image perceptual contrast enhancement effect of the proposed model is better than that of the traditional mathematical models,indicating that the model is more suitable for image perception contrast enhancement.

关 键 词：数学模型 图像感知 离散小波变换 图像灰度处理 图像分割 对比实验 

分 类 号：TN911.73-34[电子电信—通信与信息系统] TP391.4[电子电信—信息与通信工程]