摘要
为使条纹处理、原理简单、速度快、抗干扰 ,提出了一种基于分块法的条纹处理技术。在对不同的二值化方法比较的基础上 ,重点阐述了基于分块法的图像二值化和细线化的原理和过程 ,讨论了分块二值化中阈值确定的原则和算法 ,介绍了为提高图像处理质量而采用的去底色方法和对图像中间部分的特殊处理过程 ,以及基于该法的图像细线化算法。基于分块法的条纹处理技术能够最大限度地保留有用信息 ,遏制干扰和冗余信息 ,有很大的可靠性。将该法应用于莫尔测偏法进行物体表面形貌的测量 。
To simplify fringe processing, enhance the processing speed and robustness, a fringe processing method based on divided image blocks is proposed. Based on a comparison of different image binarization methods, the principles and processes of image binarization and fringe thinning of this method are described. The principle and the algorithm of threshold determination are discussed. A background tone removing method and a method for processing intermediate image parts for the improvement of image processing quality as well as the fringe thinning algorithm are described. The fringe processing method based on divided image blocks can retain useful information, remove interference and redundant information, and is of high reliability. An application of this method in moiré deflectometry for the measurement of object surface profile is presented. Using this method, it is possible to reconstruct the surface profile only with two orthogonal Moiré deflectograms. Good results are achieved in measurements.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2001年第11期91-94,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金资助项目 (5 9475 0 82 )
德国大众基金项目
