Super-resolution reconstruction of image in high accuracy image measuring system
张进 Zhang Jin, 王仲 Wang Zhong, 李雅洁 LI Ya-jie, 叶声华 Ye Shenghua · Optics and Precision Engineering · 2011
To improve the measuring accuracy of an image measuring system,the super-resolution image reconstruction technology for an image sequence is researched based on the micro-displacement.As the high accurate micro-displacement is difficult to realize and very expensive,a super-resolution reconstruction method which doesn't require the high accurate micro-displacement is proposed.Firstly,the image sequence based on an arbitrary micro-displacement is obtained.Then,the accurate micro-displacement of image sequence is calculated by the feature points of a tested object or a template using a substrate.Finally,the high-resolution image is reconstructed by the mathematical model proposed in this paper for radiographic measurement.The experimental results indicate that when the image resolution is 4 times that of an original image,the measurement accuracy will promote 29% to 64% according to the different micro-displacements,which shows the method can reconstruct a high-resolution image including tested objects effectively,and can improve the accuracy of the system.