A support system for archiving antique stereographs using a camera

摘要

Antique stereographs were taken by photographers more than 100 years ago. In general, the antique stereographsare printed to the about 9cm×17cm thick paper and they are distorted due to aged paper surface. To archivingthem, their captured images have to be transformed to the original image. In the paper, a user support systemfor archiving antique stereographs by distorting input image of a stereograph. In our system, a user selectsby clicking multiple points at the edge of the image. The input image is divided into small regions based onthe points and each small region is transformed to the same rectangle with the known size by a perspectivetransformation. To obtain small regions all of which are originally the rectangle with the same size, the pointsobtained by user's click are interpolated quadratically. To evaluate the correction accuracy of the proposedsystem, the experimental results are shown.