| URN | etd-0901122-113021 | Statistics | This thesis had been viewed 49 times. Download 0 times. |
| Author | Chien-Hao Huang | ||
| Author's Email Address | No Public. | ||
| Department | Department of construction & spatial design | ||
| Year | 2021 | Semester | 2 |
| Degree | Master | Type of Document | Master's Thesis |
| Language | zh-TW.Big5 Chinese | Page Count | 73 |
| Title | Aiding occlusion objects¡¦ measurements by models, point clouds and true ortho producing which is producing from unmanned vehicles (UAV). | ||
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| Abstract | Most of Taiwan's cities are facing the effects of ageing buildings in their old city centres. After the September 21 earthquake in 1988, Taiwan updated its building regulations to increase the seismic strength of buildings. In response to the new building regulations, the government accelerated the urban renewal of developed urban areas. Most of the topographic surveys in these small areas (1000~5000 pings) are limited by the existing development methods, as well as by local residents adding fences or additions to their fire escapes, which affects the efficiency of topographic mapping operations.In many cases, topographic mapping cannot be completed in narrow alleys, making it difficult to integrate urban regeneration and delaying the process. The development of new technologies has accelerated the need for many mapping operations and urban regeneration.More and more projects are looking for instant mapping results and the need to present them.UAVs are a great tool for quickly updating the relevant base mapping information.This study is based on the flight levels set by the Civil Aviation Administration of the Ministry of Transport.The study uses multiple image matching techniques to produce realistic 3D high-dimensional realistic landscape models, point clouds and realistic orthomosaics for the yellow and green areas (120m in the green area and 60m in the yellow area). The results complement conventional topographic surveying in obscured areas where it is not easy to reach and compensate for the human-made inaccessible areas for topographic feature surveying. |
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| Files | indicate in-campus access immediately and off-campus access at 5 years | ||
| Date of Defense | 2022-07-07 | Date of Submission | 2022-09-01 |