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系統識別號 U0026-0109201517243500
論文名稱(中文) 電腦繪圖與光學量測並用於立體影像品質評估之研究
論文名稱(英文) Study of Integral Imaging Evaluation via both Computer Graphics and Optical Measurements
校院名稱 成功大學
系所名稱(中) 光電科學與工程學系
系所名稱(英) Department of Photonics
學年度 103
學期 2
出版年 104
研究生(中文) 陳彥瑋
研究生(英文) Yen-Wei Chen
學號 L76021147
學位類別 碩士
語文別 中文
論文頁數 63頁
口試委員 指導教授-許家榮
口試委員-黃啟炎
口試委員-林俊宏
口試委員-鄭協昌
中文關鍵字 電腦繪圖  立體影像品質評估 
英文關鍵字 computer graphics  integral imaging evaluation 
學科別分類
中文摘要 目前已有許多評估3D影像品質的方法,但是大部分都只是探討單一光學系統的成像能力。但是,由於人眼視覺才是最終的影像接收系統,所以在評估立體影像品質時,必須考慮人眼視覺特性才能使得評估結果與人眼感受相符合。
本論文根據參考文獻所提之考慮人眼視覺因素的評估指標,探討不同規格之透鏡陣列及不同波長的色光對於成像品質的影響。此外,藉由電腦繪圖軟體製作視差影像,與先前實驗室學長所使用相機拍攝實際物體的方法,進行影像品質評估之比較,預期增加影像評估結果之敏感度並減少環境影響及人為誤差。
實驗結果證明透鏡陣列的透鏡單元數目是影響影像品質的最主要因素,透鏡單元數目愈多,成像邊緣就愈清晰。波長對於成像品質的影響,則是波長愈短其邊緣愈清晰。當在最佳觀測距離觀看立體影像時,短焦距透鏡陣列因繞射的影響使得成像邊緣會比較模糊。根據量化數值PSNR的比較結果可以證明,利用電腦繪圖軟體輔助確實能夠提升整體的數值,亦即減少了許多外在以及人為因素的影響。並且使用解析度較高的視差影像,能夠減少色彩分離的問題。
英文摘要 In this thesis, two referred ways to be used for 3D imaging performance in integral imaging system is demonstrated and experimentally compared with human visual sensation including human vision considerations and image pickup via computer graphics.
Experiment results show that the number of lens units is an important factor to affect 3D imaging performance in integral imaging systems. The more lens units in lens arrays are, the sharper imaging performance shown in the edge of the images are. The optical wavelength is also factor to affect imaging performance in integral imaging systems. The shorter wavelength is, the clearer images are. When viewing 3D images at an optimal distance, the lens arrays with shorter focal lengths show worse imaging quality than that in lens arrays with larger focal lengths due to optical diffraction effect. For one-dimensional integral imaging system, the larger evaluated PSNR values show consistence with human vision sensation when comparing imaging performance via an additional computer graphic pickup. Simultaneously, using higher resolution parallax images largely reduce the degree of color separation occurred in rendered images.
論文目次 摘要 I
Abstract II
致謝 X
目錄 XI
圖目錄 XIII
表目錄 XVI
第一章 緒論 1
1-1 前言 1
1-2 研究動機 7
第二章 原理及理論 10
2-1 立體視覺顯視原理 10
2-2 一維積分成像系統(柱狀透鏡) 13
2-2.1 視差影像製作原理 13
2-2.2 視差影像與顯示器解析度 14
2-2.3 柱狀透鏡型立體顯示器的視區分佈 15
2-3 二維積分成像系統原理 18
2-4 人眼視覺特性 22
2-5 解析度對比參數[20] 23
第三章 實驗方法及步驟 26
3-1 實驗裝置介紹 26
3-2 具影像資訊之彩色濾光膜製作 28
3-3 一維積分成像系統 31
3-3.1 實驗架構 31
3-3.2 子畫素排列結構 33
3-4 二維積分成像系統 36
3-4.1 物件規格及實驗架設 36
3-4.2 波長對於立體影像品質影響之實驗 39
第四章 實驗結果與討論 41
4-1 不同畫素結構之雙視點影像之實驗結果 41
4-2 一維積分成像系統之立體影像量化評估 43
4-3 不同畫素結構之實驗結果討論 47
4-4 二維積分成像系統之實驗結果 49
4-5 基於人眼視覺特性的解析度對比參數之實驗討論 54
4-6 不同波長色光之成像實驗結果 56
4-7 不同波長色光之實驗結果討論 57
第五章 結論與未來展望 59
5-1 結論 59
5-2 未來展望 60
參考文獻 61
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