二維影像融合用於BSDF與配光曲線之研究;Study of 2D Image Fusion for BSDF and Goniophotometry

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/71582

Title:	二維影像融合用於BSDF與配光曲線之研究;Study of 2D Image Fusion for BSDF and Goniophotometry
Authors:	林芸萱;LIN,YUN-HSUAN
Contributors:	光電科學與工程學系
Keywords:	配光曲線;雙向散射分佈函數;屏幕複合式全場域光度儀;全場域;光強分佈
Date:	2016-08-19
Issue Date:	2016-10-13 13:18:37 (UTC+8)
Publisher:	國立中央大學
Abstract:	屏幕複合式全場域光度儀改善市售之儀器量測耗時的缺點，其利用相機一次擷取大範圍之光形分佈，再結合旋轉台轉動待測物改變不同拍攝角度，就能夠透過影像融合系統整合所有拍攝到的影像，取得待測光源的全場域光強分布，再加上額外照射光源並旋轉待測物以改變入射角便能獲雙向散射分佈函數量測結果。本文為了使機台能夠同時量測配光曲線，對系統進行改良，增加遠場距離達50公分。為了能夠降低機台體積，將機構改良成旋轉待測物與光源，並使屏幕大小為601×496 (mm2)，在屏幕大小不變的情況下，相對應的必須增加拍攝張數，因此本文提出了半場域量測時的拍攝張數的最佳化解決方案，並且在同一機台上實現了雙向散射分佈函數與配光曲線的量測，其中配光曲線的待測物大小在單一維度可達5公分。 ;Screen image synthetic whole-field optical distribution meter overcomes the shortcoming of time consuming of goniophotometer in the current market. It use camera to capture a wide range of light distribution with only one shot. By using rotator to change the picturing aspect, we can synthesize the whole images with aid of image fusion system to form the whole field optical distribution. Moreover, we add light source to illuminate the sample, and rotate the sample to change incident angle to obtain the BSDF measurement result. In this thesis, in order to measure the optical distribution and BSDF using one instrument. We increase the distance between the sample and the camera up to 50 cm. Besides, in order to reduce the volume of the instrument, the screen size is set as 601×496 (mm2), and the rotational part is the sample with light source instead of the imaging system. Since the screen size is limited, the total number of pictures is increased to cover the whole field. Here, we proposed an optimized solution to minimize the total number of pictures in semi-sphered field measurement. BSDF measurement and whole field optical distribution measurement distribution are accomplished with one instrument. The size of the light source in one dimension for the whole field optical distribution measurement achieve 5 cm.
Appears in Collections:	[Graduate Institute of Optics and Photonics] Electronic Thesis & Dissertation

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