| 研究生: |
張晏獅 Chagn, Yen-Shih |
|---|---|
| 論文名稱: |
空載LiDAR結合航照影像應用於人工建築物自動判釋之研究 Combination of Airborne LiDAR and color-photo images in automated interpretation of artificial building |
| 指導教授: |
曾清凉
Tseng, Ching-Ling |
| 學位類別: |
碩士 Master |
| 系所名稱: |
理學院 - 地球科學系碩士在職專班 Department of Earth Sciences (on the job class) |
| 論文出版年: | 2007 |
| 畢業學年度: | 95 |
| 語文別: | 中文 |
| 論文頁數: | 69 |
| 中文關鍵詞: | 空載LiDAR 、數值建物模型(DBM) |
| 外文關鍵詞: | Airborne LiDAR, Automated interpretation |
| 相關次數: | 點閱:100 下載:7 |
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空載LiDAR技術以每秒數萬點之頻率對地面掃描,其產出的點雲資料紀錄地表之高精度三維空間坐標,可產製網格化之數值高程模型(DEM)及數值地表模型(DSM),藉由二者之間之差異量而獲得數值建物模型(DBM),該模型資料正好可彌補影像判釋對於人工建築物因影像本身解析度不足或是色調分布不均所造成誤判結果。本研究利用航照影像對地表具有詳盡描述之優勢及其影像具有多光譜資訊之特性,結合LiDAR能快速提供高精度DTM之優點,以2D(航照影像)+1D(LiDAR DTM)之概念進行人工建築物自動分類,希望加入三度空間的輔助資訊和地理資訊系統為套疊分析展示的方式,將誤判之處比對出來而予以修正。經實證分析,使用ENVI軟體進行監督式影像判釋會有漏判或誤判的現象,於加入DBM資料之後利用ArcGIS中的 ArcMap軟體對研究區域之航照影像、判釋影像及DBM三項資料進行套疊比對及面積分析,很容易了解並判斷出漏判或誤判的地方,因此以二度空間的影像資料加上DBM資訊,確實能輔助影像判釋中對於人工建築物的自動分類,提昇判釋的正確性。
Get empty to carry a LiDAR technique the each number is scanned the ground by the frequency of 10000:00, it produces of order the high accuracy 3D space of cloud data record earth's surface to sit a mark, can produce to make the number high distance model(DEM) and number earth's surface model(DSM) that the mesh turns, by the difference of the of twos quantity and acquire number building model(DBM), the model's data at the right moment can make up image to judge to release because of shortage or tone of the image resolution to the artificial building distribute the miscarriage of justice caused not and all as a result. This research makes use of a sail to shine on image to have the characteristic that advantage and its image of detailed description have many spectrum information to the earth's surface, combining the LiDAR can quickly provide the advantage of high accuracy DTM, with the 2 Ds(the sail shine on image)+the 1 D(LiDAR DTM) its concept carry on artificial building's automatically categorizing, hope to join assistance information and geography information system of three-dimensional space as set the way which fold analysis demonstration, give correction towards coming out and the ratio of miscarriage of justice. Through substantial evidence analysis, the usage ENVI software carries on a direct type image to judge to release will have already leaked to judge or miscarriage of justice of phenomenon, after joining DBM data make use of the ArcMap software in the ArcGIS to research district of the sail shine on image and judge to release image and DBM three data to carry on a set to fold a ratio to and area analysis, very easily understand and judge to leak to judge or the place of miscarriage of justice, so plus DBM information by the image data of two dimensions, can really lend support to image to judge to release medium for the automatic classification of artificial building, promote to judge to release of accuracy.
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