具平板玻璃介面成像系統水下物像對應及物點定位品質分析
Other Title
Analysis of Underwater Object-to-Image Correspondence and Object Point Positioning Quality by Using Flat-Refractive Imaging System
Journal
航測及遙測學刊
Journal Volume
30
Journal Issue
1
Start Page
1
End Page
21
ISSN
1021-8661
Date Issued
2025-03
Author(s)
王俊凱
Abstract
在具備足夠光線或照明以及無顯著水流擾動的場域前提下，本研究探討水下攝影測量中，將相機置於防水殼內逕於水中拍攝的具平板玻璃介面成像系統，此類多介質成像路徑涵蓋水、玻璃與空氣三種介質，使光線因折射效應產生偏折，因此需精確掌握內外方位、畸變差參數及玻璃介面相關參數（如玻璃厚度、透視中心到介面距離、玻璃傾角及折射係數），以建構正確的成像路徑並進行物像對應之解算任務。在本研究中研擬之水下攝影測量物像對應模式下，透過模擬與實際實驗分析各參數誤差及交會幾何配置對物點定位的影響，驗證物像對應的可行性與有效性。研究結果提供水下攝影測量物空間定位的參考依據，有助於使用者在定位任務中掌握影響因子誤差並選擇符合需求之幾何配置。
Under the premise of sufficient lighting or illumination and with insignificant water flow disturbance, this study focuses on the flat-refractive imaging system, where a camera is facilitated in a housing device and acquires the images underwater, a typical configuration in underwater photogrammetry. The imaging path of flat-refractive imaging system involves multimedia environment, where both imaging and positioning are influenced by the refraction effect. Accurate determination of interior and exterior orientation, distortion parameters, and glass-related parameters such as glass thickness, the distance from the perspective center to the interface, the tilt of the glass interface, and refractive indices is essential to construct the correct imaging path and solve tasks related to object-to-image correspondence. In the object-to-image correspondence model of underwater photogrammetry proposed in this study, simulations and actual experiments were conducted to analyze the influence of parameter errors and intersection geometry on the positioning quality of object points, validating the feasibility and effectiveness of the model. The results provide a reference for object space positioning in underwater photogrammetry, enabling users to identify the errors of influential factors and select appropriate configurations based on task requirements.
Subjects
水下攝影測量
具平板玻璃介面成像系統
定位誤差
交會幾何
多視角
Underwater Photogrammetry
Flat-refractive Imaging System
Positioning Error
Intersection Geometry
Multi-view
Type
journal article