ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., II-5/W1, 31-36, 2013
© Author(s) 2013. This work is distributed
under the Creative Commons Attribution 3.0 License.
30 Jul 2013
Dept. of Mapping and Cartography, Civil Engineering Faculty, Czech Technical University in Prague Thakurova 7, 166 29 Prague 6, Czech Republic
Keywords: Culture heritage, Photogrammetry, Range image, Panoramic image, Sensor fusion, 3D scanner Abstract. This paper deals with a fusion of range and panoramic images, where the range image is acquired by a 3D laser scanner and the panoramic image is acquired with a digital still camera mounted on a panoramic head and tripod. The fused resulting dataset, called "textured range image", provides more reliable information about the investigated object for conservators and historians, than using both datasets separately. A simple example of fusion of a range and panoramic images, both obtained in St. Francis Xavier Church in town Opařany, is given here. Firstly, we describe the process of data acquisition, then the processing of both datasets into a proper format for following fusion and the process of fusion. The process of fusion can be divided into a two main parts: transformation and remapping. In the first, transformation, part, both images are related by matching similar features detected on both images with a proper detector, which results in transformation matrix enabling transformation of the range image onto a panoramic image. Then, the range data are remapped from the range image space into a panoramic image space and stored as an additional "range" channel. The process of image fusion is validated by comparing similar features extracted on both datasets.
Received: 03 May 2013 – Revised: 14 Jul 2013 – Accepted: 17 Jul 2013 – Published: 06 Dec 2013