平板電腦螢幕色彩組合對視認性及視覺績效、視覺疲勞之影響

Effect of color combination on legibility, visual performance, and visual fatigue on tablet PC

邱榆皓(Yu-Hao Chiu)

指導教授 ： 彭瑞玟

國立臺北科技大學/設計學院/創新設計研究所/碩士(2013年)

https://doi.org/10.6841/NTUT.2013.00552

摘要

隨著科技的進步與成長，平板電腦的使用普及率有快速攀升的趨勢，而平板電腦提升了電子化閱讀之便利性；然而同時卻也讓人們閱讀電子顯示器的時間增加許多，且使用者未必能在理想的閱讀姿勢及環境之下，可能會產生視覺疲勞的情形。因此閱讀時的文字/背景色彩組合成了影響閱讀時的績效及視覺疲勞之重要因素。
本研究共分為兩階段實驗，利用平板電腦作為實驗工具，透過實驗取得數據，以探討不同的色彩組合所造成之視認性差異，及長時間閱讀時使用者之視覺績效、視覺疲勞程度，以提出適切的文字/背景色彩組合。釐清並說明視認性的表現與視覺績效、視覺疲勞程度之間的關係及影響。
根據本研究之實驗結果顯示，平板電腦螢幕其色彩組合為白底黑字時，視認性最佳；則視認性表現最差者為黑底白字。
於視覺績效實驗中，目標物搜尋任務績效最優異者為黑底白字、於理解力問答題中表現最優異者為黑底白字及黑底綠字、於閱讀速度中則為黑底綠字表現最優異。而目標物搜尋任務績效最不理想的是色彩組合為綠底藍字時、於理解力問答題中表現最差者為藍底綠字、於閱讀速度中則為黑底白字表現最差。
視覺疲勞檢測依據共分為主觀及客觀兩部分，受測者之主觀視覺疲勞評價最佳者為白底黑字；則最差者為藍底綠字。受測者之客觀視覺疲勞指數最輕微者為黑底綠字；則最嚴重者亦為藍底綠字。

關鍵字

色彩組合 ； 視認性 ； 視覺績效 ； 視覺疲勞 ； 平板電腦

並列摘要

With the advancement of computer technology and screen technique, reading with tablet PC has become a new trend. Since the light of the environment affects the reading when using tablet PC, the study is mainly focused on how the combination of text colors influences the sense of visual while reading with tablet PC in bright environments.
The whole experiment was divided into two sections, one is the legibility, and the other is the visual performance, subjective and objective visual fatigue affected by color combination.
Experimental result shows that the combination of W/BK has the best legibility, and BK/W is the worst one.
In the visual performance experiment, the best combinations are BK/W and BK/G, but the worst are BL/G and G/BL.
The result indicates that BL/G has the worst visual fatigue, and W/BK is the best according to the subjective 9-point scale. Furthermore, BK/G is the best combination for the visual fatigue by objective instrument (Speedy-K), and the worst is BL/G.
In summary, this study has indicated that it is possible to ease the visual fatigue when reading the suitable combination of color.

並列關鍵字

Color combination ； Tablet PC ； Legibility ； Visual Performance ； Visual fatigue

參考文獻

1. Bauer,D.&Cavonius,C.R. Improving the legibility of visual display units through contrast reversal, 1980.

2. Chi and Lin, A comparison of seven visual fatigue assessment techniques in three data-acquisition VDT tasks, 1998.

4. E.D., & Horvath, T.L., Sexual dimorphism and aromatase in the rat retina. Developmental Brain Research, 2001.

5. Iwasaki, T., Kurimoto,S. & Noro,K., The Changes in colour flicker fusion (CFF) values and accommodation times during experimental repetitive tasks with CRT display screens, 1989.

6. Jun-Yun Zhang, Legibility Variations of Chinese Characters and Implications for Visual Acuity Measurement in Chinese Reading Population, 2007.