色彩數量與面積因素影響圖像複雜度之量化研究

Quantification of Pictorial Complexity Contributed by Factors of Color Number and Relative Area

本研究旨在利用視覺搜尋（visual search）、複雜度測量（complexity measure）的方法，驗證「色數」與「色面積」因素如何影響圖像的複雜度，並據以提出適當的複雜度量化公式。結果顯示，色數為6 色以下時，圖像複雜度的知覺明顯受到色數變化的影響，6 色以上時則影響不顯著。色面積差異量越小，則受試者覺得圖像越複雜，兩者成線性關係。

The main purpose of this study aimed to investigate the relationship between two factors (color number and relative area) and pictorial complexity through visual search approach, and the appropriate quantification of the relationship was also concluded via complexity measure approach. The results indicated positive relationship between color number and pictorial complexity when the number of different colors used in a picture is less than 6. The increasing rate becomes graded while more than 6 colors are involved. Besides, the relationship between difference of color areas and complexity value was inverse proportion.