臺灣博碩士論文加值系統

已知人的感知距離的判斷分別在真實環境與虛擬環境的認知上有所差異。真實與虛擬環境感知距離上的差異將對虛擬實境的體驗造成一定程度的影響，因此被視為增進虛擬實境真實感重要的一環。本研究將觀察並分析不同的條件因子在真實與虛擬環境之間對於感知距離的影響，而條件因子包含「顯示器」、「視覺效果」、「擺放高度」、「尺寸」、「距離」。實驗又分為三大部分，分別為真實環境距離感知實驗、49吋螢幕距離感知實驗與95吋投影螢幕距離感知實驗。最後從實驗結果，分析上述因子對距離感知所造成的影響。
從結果可知受測者所判斷的感知距離數值都是小於實際距離的數值。而「顯示器」之間95吋投影螢幕判斷感知距離精準度優於49吋的螢幕；而「視覺效果」為真實環境感知距離精準度優於2D虛擬環境和3D立體虛擬環境，而3D立體虛擬環境優於2D虛擬環境；而物體擺放在高處或是低處對判斷的距離是沒有影響的；而尺寸10cm的球體感知距離精準度優於尺寸15cm和尺寸20cm的球體，物體尺寸越小判斷距離也較準確；而最短距離的精準度相較於其他距離其呈現的精準度是最低的，感知距離的判斷會因不同擺放位置影響判斷的結果。研究成果期望對提升虛擬實境的真實感與距離感知的研究提供有效的幫助。

It is known that human’s judgment over perception distance in a real environment is different from that in a virtual environment. Differences of perception distance in a real environment versus the one in a virtual environment will create a certain degree of influence over experience of virtual reality. As such, this is considered as an important part to enhance sense of reality in virtual reality. This research shall observe and analyze different condition factors’ influences on perception distance in a real environment as well as a virtual environment. Condition factors include “screen,” “visual effect,” “height of placement,” “size” and “distance.” This experiment is divided into 3 major parts which are real environment distance perception experiment, 49-inch screen distance perception experiment and 95-inch projection screen distance perception experiment. Influences from aforementioned factors over distance perception will be analyzed from experiment results.
It is observed from the results that for participants’ perception distance values from their judgment are all smaller than the ones for actual distance. With respect to “screen,” accuracy for perception distance judgment over 95-inch projection screen is better than the one over 49-inch screen. As for “visual effect,” accuracy for perception distance in a real environment is better than the ones in 2D virtual environment and 3D stereoscopic virtual environment, while the one for 3D stereoscopic virtual environment is better than the one in 2D virtual environment. Positions of objects, whether these objects are placed in high or low positions, have no influence on the judgment over perception distance. Accuracy for perception distance over 10cm sphere is better than the ones over 15cm and 20cm. The smaller an object is, the more accurate judgment over perception distance will be. Precision over the shortest distance is the lowest as compared with the ones presented by other distances. Judgment over perception distance is affected by different positions an object is placed. It is expected that research results can provide effective assistance to researches of enhancement over virtual environment sense of reality and distance perception.

第壹章 緒論 1
第1.1節 研究背景與動機 1
第1.2節 研究目的 3
第1.3節 研究範圍 5
第1.4節 研究流程 6
第貳章 文獻探討 8
第2.1節 虛擬實境的運用 10
第2.2節 感知、空間感知與視覺深度知覺 14
第2.3節 距離感知的研究 18
第參章 實驗設計與準備 31
第3.1節 實驗設計 31
第3.2節 實驗流程 36
第3.3節 實驗設備與環境 40
第3.4節 實驗數據分析 48
第肆章 真實環境距離感知實驗 49
第4.1節 真實環境實驗 49
第4.2節 真實環境實驗結果與分析 51
第伍章 49吋螢幕距離感知實驗 59
第5.1節 49吋螢幕實驗 59
第5.2節 第49吋螢幕實驗分析與結果 63
第陸章 95吋投影螢幕距離感知實驗 84
第6.1節 95吋投影螢幕實驗 84
第6.2節 95吋投影螢幕實驗結果分析 88
第柒章 不同螢幕尺寸之間的比較與分析 108
第7.1節 95吋投影與49吋螢幕2D虛擬環境分析與比較 109
第7.2節 95吋投影與49吋螢幕3D立體虛擬環境的分析比較 113
第7.3節 距離感知實驗問卷分析 117
第捌章 結論與未來建議 120
第8.1節 結論 120
第8.2節 未來建議 122
文獻參考 123
附錄一 實驗後問卷調查 128

文獻參考
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