抄録
The image correlation method is used for the displacement and strain measurement of the structures. The image correlation method is a method in pursuit of partial image using pattern matching. In this research, we propose a new image correlation method to improve the accuracy of sub-pixel estimation at the positioning of target image. The proposed method, which combines the curve fitting and image interpolation, can obtain the sub-pixel position precisely. The goal of this research is to achieve the measurement precision of 1/100 pixel. From the results of the sub-pixel estimation, it was confirmed that the proposed method is effective.
