Abstract
Abstract. In Thailand, there are several types of (tangible) cultural heritages. This work focuses on 3D modeling of the heritage objects from multi-views images. The images are acquired by using a DSLR camera which costs around $1,500 (camera and lens). Comparing with a 3D laser scanner, the camera is cheaper and lighter than the 3D scanner. Hence, the camera is available for public users and convenient for accessing narrow areas. The acquired images consist of various sculptures and architectures in Wat-Pho which is a Buddhist temple located behind the Grand Palace (Bangkok, Thailand). Wat-Pho is known as temple of the reclining Buddha and the birthplace of traditional Thai massage. To compute the 3D models, a diagram is separated into following steps; Data acquisition, Image matching, Image calibration and orientation, Dense matching and Point cloud processing. For the initial work, small heritages less than 3 meters height are considered for the experimental results. A set of multi-views images of an interested object is used as input data for 3D modeling. In our experiments, 3D models are obtained from MICMAC (open source) software developed by IGN, France. The output of 3D models will be represented by using standard formats of 3D point clouds and triangulated surfaces such as .ply, .off, .obj, etc. To compute for the efficient 3D models, post-processing techniques are required for the final results e.g. noise reduction, surface simplification and reconstruction. The reconstructed 3D models can be provided for public access such as website, DVD, printed materials. The high accurate 3D models can also be used as reference data of the heritage objects that must be restored due to deterioration of a lifetime, natural disasters, etc.
Highlights
Thailand has various cultural heritage sites of the world
3D models are able to obtain from 3D data acquisition or 2D images reconstruction based on photogrammetry
The images used for 3D modeling were obtained from heritage objects in Wat-Pho (Bangkok, Thailand) such as sculpture, pagoda, etc
Summary
Thailand has various cultural heritage sites of the world. One of the most tourists attractions is Wat-Pho, the official name being Wat Phra Chetuphon Vimolmangklararm Rajwaramahaviharn, located behind the Grand Palace at the center of Bangkok. 3D models are able to obtain from 3D data acquisition (laser scanner: active device) or 2D images (camera: passive device) reconstruction based on photogrammetry. 3D modelings of many objects in Wat-Pho are reconstructed and presented by using the image-based approaches with photogrammetry techniques. The image-based approaches provide more realistic 3D models and potential to acquire a wide range of objects or scenes (El-Hakim et al, 2004). It is able to use images obtained from a crowdsourcing system (Snavely et al, 2006, Snavely et al, 2008). The objective of this work is to basically visualize and to use as 3D data archives which are required for more accurate 3D models. The sample images and directory of Wat-Pho are shown in figure 1
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