A new storage approach on the original cadastral maps by multi-view image processing technology

Traditional, the hardcopy of cadastral map is an important historical evidence for the land parcels information in the Land Office. However, the paper is not easy to save and the size of the scanner is not large enough for digital storage either. In this study, multi-view image processing technology is applied to create a true ortho-photo of cadastral map for solving the storage problem. This study is based on the image of equal ratio for the self-painted land resurveying. And then the true ortho-photo is produced by the various number of photos using multi-view image processing. Results show that the obtained photos have the broken image phenomena when the number of images is less than 15. Comparison of the sampling distance and actual length for more than 15 images, the results show that all the distance error in mm below. To shoot 15 images produced by the true ortho-photo as the basis, the real hardcopy of land resurveying with different scales and not marked distance is implemented. Results indicate that whole distance of errors are smaller than mm. Finally, the all distance errors are less than mm for repetitive experiments with a scalar and labeled length of cadastral map. The above results show that land resurveying image using multi-view image processing techniques can provide the storage approach with simple, fast, high precision, low cost, and no size constraint.