文献类型：期刊文献

中文题名：彩色压板图像非均匀光照校正方法

英文题名：Algorithm for the Adjustments of Color Relaying Plate Images with Uneven Illumination

作者：林嵩[1];于丽杰[1];章源[1];薛昊明[1];杨景方[1];张伟[1]

第一作者：林嵩

机构：[1]北京联合大学城市轨道交通与物流学院

第一机构：北京联合大学城市轨道交通与物流学院

年份：2018

卷号：0

期号：24

起止页码：53-55

中文期刊名：办公自动化

外文期刊名：Office Informatization

基金：北京联合大学"启明星"大学生科技创新项目经费资助(No.201811417SJ137)

语种：中文

中文关键词：压板图像;光照不均匀检测;灰度校正

外文关键词：Relaying plate image;Uneven illumination detection;Gray value correction

摘要：针对彩色压板图像光照分布不均的问题,提出了在HIS颜色空间中,根据图像亮度分量变化特征进行图像光照问题分类;根据不同光照情况,分为低照度、高光和光照不均匀和光照均匀清晰四种图像;针对低照度图像,应用抛物线函数非线性变换方法处理亮度分量进行图像增强;针对局部光照不均匀的图像,对图像进行分块处理,根据每块自身的平均亮度值和均方差以及全图的平均亮度值来进行自适应变换;对高光图像由于表面纹理和颜色退化严重,影响后续的识别处理效果,采取废弃处理。实验表明,本文的压板图像分类处理方法简单有效,可以提高压板图像后续识别处理效果。
In order to solve the problem of color relaying plate images with uneven illumination,In this paper proposes a method to classify the image illumination problems based on the variation of image brightness components in HSI color space. According to different light conditions,They are divided into four categories of images:Low-luminous image,High light image,Uneven illumination image and Uniform illumination image;For Low-luminous image,the parabolic function nonlinear transformation method is used to process the luminance component for image enhancement. For the image with uneven local illumination,the image is divided into blocks,and the adaptive transformation is carried out according to the average luminance and mean square deviation of each block and the average luminance of the whole image.Due to the serious degradation of surface texture and color of high-light image,the subsequent recognition and processing effect is affected,and the waste treatment is adopted. Experiments show that this method is simple and effective,and can improve the effect of plate image recognition.