| 研究生: |
蘇來堯 Anugraha, Adindha Surya |
|---|---|
| 論文名稱: |
結合遙測與社會感知於土地使用分類 Land Use Classification from Integration of Remote Sensing and Social Sensing Data |
| 指導教授: |
朱宏杰
Chu, Hone-Jay |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 測量及空間資訊學系 Department of Geomatics |
| 論文出版年: | 2019 |
| 畢業學年度: | 107 |
| 語文別: | 英文 |
| 論文頁數: | 81 |
| 外文關鍵詞: | Human Behavior, Social Sensing, Remote Sensing, Decision Tree, Random Forest, Accuracy Assessment |
| 相關次數: | 點閱:173 下載:42 |
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Nowadays, the demand of utilization of urban land use maps by urban authorities, researchers, and citizens, steadily increased since the past decades. Utilization urban land use map reveals the human activity issues especially for human behavior in cities. Discovering patterns of human behavior is useful for urban authorities and citizens, especially in traffic forecasting, social science and urban planning. To discover patterns of land use in cities, sensing and analyzing the remote and social sensing data need to be conducted.
New York City in the United States of America (USA) is selected as the study area in this research including Manhattan District, Brooklyn District and Queens District. Two types of openly accessible data, namely remote sensing data and social sensing data are selected as the datasets. The social sensing data are bike and taxi data, whereas remoted sensed imagery is the Sentinel 2 sattelite image data. This research contains two aims, to sense and analyze the human behavior pattern, and to classify land use from the integration of remote sensing and social sensing data. The human behavior in the city can be discovered by extracting the bike and taxi data and understanding where and when people are in the city based on Geographic Information System (GIS). The two peak times at weekday happen at 8-9 am and 6-7 pm for both bike and taxi usage. Meanwhile, the peak times at weekend happen at 5-6 pm for bike usage, while for taxi usage happen at 6-7 pm. The bike and taxi density maps are generated to display where people are located in the city during the peak times, and it also can be reflected as residential area, office area and entertainment area.
A decision tree and random forest are used to perform the urban land use classification for 5 classes and 6 classes in the city. Accuracy assessment of the urban land use classification map is required to test the quality of supervised classification result of decision tree and random forest. Therefore, the overall accuracy of the 5 classes land use classified map reach 85.33% for decision tree and 86.96% for random forest, whereas the 6 classes land use classified map for decision tree and random forest reach 83.33% and 85.67%, respectively. The result of overall accuracy shows if demonstrate the integration of remote sensing data and social sensing data are capable for urban land use classification accurately and random forest has better overall accuracy than decision tree.
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