隨著LED照明產品的多樣化，對人類視覺感知的變化與影響亦趨複雜，甚至直接影響其心理反應。為此，本研究擬從心理物理學實驗著手。研究初期使用LCD顯示器作為實驗的刺激源，利用影像式輝度計量測客觀亮度，並與心理物理學實驗獲得的主觀人眼視明度評價進行比較。結果顯示，刺激源亮度與環境背景亮度造成的對比皆會對人眼視明度造成顯著影響。根據上述，提取影響人眼視明度的關鍵因子，進行室內LED照明光環境亮度評價，以LED作為實驗的刺激源與環境光源，針對人眼視明度與視覺舒適度進行評價分級。最後，使用國際照明委員會CIE建議的CIECAM02色外貌模型與UGR統一眩光指數為基礎模型，根據實驗評價結果加以修正，並透過輝度影像的處理與分析，建立圖像化的定量評價模型，期望能提供未來LED照明環境規劃設計時，一套優質照明品質的評估指標。

Following on the product diversification of solid-state lighting, it become complex in terms of the change and influences of human eyes perception and sensation and even direct affects the response of human psychology. Therefore, the proposed study first develops the evaluation model of human eyes perceived brightness and its acuity by utilizing the psychophysical experiments.
The beginning of the study was performed by the LCD display as a stimuli sources, and using the imaging luminance measurement instrument and psychophysical experiments to obtain objective luminance data and subjective rating. Experiment results showed that, the human eyes perceived brightness and its acuity all are significantly by the target luminance and luminance contrast caused by target and background. However, object size and shape have significantly effect on the brightness acuity, no significant impact on the perceived brightness scale. These results lead to the conclusion that the object and background environment does change the ability of human eyes perception and sensation. According to the purpose of this research, the next step is adjusting these factors to estimate the indoor solid-state lighting environment, and using different mathematical equations such as CIECAM02 and UGR to establish a quantitative model to predict the human eye perceived brightness scale.

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