图像拼接技术中灰度校正问题的研究  

Study on gray correction for image mosaicing

作　　者：李霞[1] 王仲[1] 张俊杰[1] 张进[1] 

机构地区：[1]天津大学精密测试技术与仪器国家重点实验室,天津300072

出　　处：《仪器仪表学报》2006年第z3期2125-2126,共2页Chinese Journal of Scientific Instrument

基　　金：天津市自然科学基金(043612111)

摘　　要：在基于图像拼接的工业微型零件图像测量系统中,由于成像系统本身的特点,容易使图像的灰度不均匀,为保证图像拼接的质量,可以用灰度校正来解决这一问题。本文提出一种根据照度分布规律对图像进行灰度校正的算法。根据光学系统的照度分布规律推导出对图像进行灰度校正的函数,并通过实验验证了这种灰度校正方法的有效性。In the micro-parts measuring system based on image mosaicing, the optical imaging characteristic can cause the image gray to be uneven, which affects the quality of the mosaiced image. This problem can be solved by gray correction. In this paper, a gray correction algorithm is presented. A gray correction function is derived according to the illumination distribution of the optical system. Image mosaicing experiments were executed to verify the effect of the presented algorithm, and the results showed that this algorithm improves the quality of the mosaiced image to a great extent, and it also made the mosaicing seam much less obvious.

关 键 词：灰度校正 照度 图像拼接 

分 类 号：TH7-55[机械工程—仪器科学与技术]