Kyushu University Academic Staff Educational and Research Activities Database
List of Presentations
Yoshiki Hori Last modified date:2019.06.11

Professor / Environmental Engineering, Planning and Design Section / Department of Architecture and Urban Design / Faculty of Human-Environment Studies


Presentations
1. Yoshiki HORI, Laser scanning of the city of Ostia and some consideration on upper structures, Ancient Architecture Discussion Group, 2019.06.
2. 41. Ogawa, T., and Y. Hori., Comparison with Accuracy of Terrestrial Laser Scanner by Using Point Cloud Aligned with Shape Matching and best Fitting Methods., International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019.02, Recently operation systems of laser scanning have been obviously improved; for instance shape matching has been equipped with software on a post processing stage so measurement without any targets is a prerequisite condition of field surveying with laser scanners. Moreover a shape matching method enables us to easily register a pair of point clouds with some errors even if those data are scanned by several type scanners. Those slightly errors can influence accuracy of alignments if the object is large to require a lot of scans. Laser scanning data has random errors and accuracy of alignments can be improved by matching error distributions of pairs of point clouds to natural distributions. This method is called "best fitting" in contrast "shape matching" in a software, PolyWorks |Inspector. In this paper, accuracy of alignments between shape matching and best fitting is discussed. The scan data of three phaseshift laser scanners (FARO Focus 3D MS120, FARO Focus 3D X330 and Z+F Imager 5016) and two time-of-flight scanners (Leica BLK 360 and Leica Scan station C5) are used for analyses. Accuracy of alignments by using shape matching and best fitting methods is demonstrated by showing points of scan data with histograms of error distributions..
3. 堀 賀貴, 小川拓郞, VISUALIZATION OF THE CONSTRUCTION OF ANCIENT ROMAN BUILDINGS IN OSTIA USING POINT CLOUD DATA, International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017.03, The implementation of laser scanning in the field of archaeology provides us with an entirely new dimension in research and surveying. It allows us to digitally recreate individual objects, or entire cities, using millions of three-dimensional points grouped together in what is referred to as ‘point clouds’. In addition, the visualization of the point cloud data, which can be used in the final report by archaeologists and architects, should usually be produced as a JPG or TIFF file. Not only the visualization of point cloud data, but also re-examination of older data and new survey of the construction of Roman building applying remote-sensing technology for precise and detailed measurements afford new information that may lead to revising drawings of ancient buildings which had been adduced as evidence without any consideration of a degree of accuracy, and finally can provide new research of ancient buildings. We used laser scanners at fields because of its speed, comprehensive coverage, accuracy and flexibility of data manipulation. Therefore, we “skipped” many of post-processing and focused on the images created from the meta-data simply aligned using a tool which extended automatic feature-matching algorithm and a popular renderer that can provide graphic results..
4. Brief History of Ancinet Roman Cities Pompeii and Ostia in disasters.
5. Laser scanning the walls in block work (Opus Quadratum) in Pompeii and Ostia: the relationship between the walls and streets.
6. From Pompeii to Ostia Roman Houses in the Development of Architectural Structure and Urbanization.
7. Drainage System of the rainwater and the excess water discharged on the streets of Pompeii , [URL].
8. Measuring the City Walls of Pompeii, 3 Dimensional Digital-data and New Measuring Method.
9. Preliminary Report on a Yamasoko-no-hana Beacon in Shimonoseki, Yamaguchi Pref..
10. A study on the restoration of the iron column used in the KAGOSHIMA cotton mill of the SATSUMA.
11. Composition of the local shrine from 18th century to 19th century.
-In the case of some shrines around Munakata,Fukuoka Pref.-.