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| 題 名 | 以向量式遮蔽偵測為基礎利用空載傾斜攝影進行自動化牆面紋理貼圖=Automatic Façade Texture Mapping Using Airborne Oblique Imagery with Vector-based Occlusion Detection |
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| 作 者 | 朱展毅; 饒見有; | 書刊名 | 航測及遙測學刊 |
| 卷 期 | 15:4 2010.12[民99.12] |
| 頁 次 | 頁325-341 |
| 分類號 | 440.924 |
| 關鍵詞 | 數碼城市; 牆面貼圖; 向量式遮蔽偵測; 無縫鑲嵌; 空載傾斜影像; Cyber city; Façade texture mapping; Vector-based occlusion detection; Seamless mosaicking; Airborne oblique imagery; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 摘 要 仿真數碼城市在適地性服務上的應用逐日增加,使得仿真數碼城市之建置成為重要的研究課題,然 而傳統上採用地面拍攝及空載垂直攝影的方式會造成牆面較嚴重的遮蔽效應及幾何變形問題,而降低仿 真數碼城市視覺的效果。因此、本研究建議採用空載傾斜攝影以降低牆面被遮蔽之效應,並針對牆面被 建物遮蔽的問題提出一套自動化的處理流程,透過漸進式的篩選機制選擇幾何變形最小之影像來製作牆 面紋理貼圖,藉此減少人力介入並提高貼圖製作效率。研究中針對牆面遮蔽問題提出向量式遮蔽偵測演 算法來判斷牆面是否有遮蔽區,若有則予以移除並以其他角度之影像重建牆面應有之紋理資訊。實驗結 果顯示,本研究提出之演算法可全自動的產生牆面紋理貼圖,且有效地將牆面遮蔽效應最小化,而所產 生的紋理貼圖,其品質也多能滿足大部分仿真數碼城市的應用。 |
| 英文摘要 | ABSTRACT Due to the application of cyber city are getting more and more, the generation of a photo-realistic cyber city is becoming an important research topic. Conventionally, the pictures taken on the ground or by vertical aerial imaging will introduce serious occlusion effect and geometric distortion, thus will degrade the visual effect of a photo-realistic city model. In this paper, we thus propose an automatic scheme for facade texture mapping according to a mechanism for the selection of better imaging geometry for the purpose of reducing human interference and increasing the texture quality. In the research, the occlusion problem is solved by means of a vector-based occlusion detection algorithm. In case of occlusion, it will be removed and restored from the other images taken from other viewing positions. Experimental results demonstrate that the proposed scheme can automatically generate the facade texture information when occlusion effect occurred. The texture quality can satisfy most of the cyber city application as well. |
本系統中英文摘要資訊取自各篇刊載內容。