色彩恆常性與繪畫用色

Abstract

色彩恆常性是人類色彩視覺中相當重要的屬性之一，它有助於我們適應各種多變的環境，人們對於這種屬性常常察而不覺。長久以來色彩恆常性的發生也常常反應在繪畫的用色上，直到印象派才有所改變。這是很有趣的現象。 本研究希望透過以電腦模擬繪畫過程的實驗來了解色彩恆常性對於繪畫用色的影響及它如何影響畫家選用色彩。並希望能發展出一套有效的訓練方法，使人們可以了解色彩恆常性的發生，此外也能了解感官給予我們的限制。藉此啟發更多的創造力。 實驗的方式是讓受測者在有窺孔及無窺孔的情況下進行調色，以了解在兩種情況下，受測者對色彩的認知有無差異。結果顯示，在有窺孔的情況下，受測者的調色表現較接近實驗時的刺激，並且也較為穩定。

Color constancy is one of the most important properties of human color vision .It helps us to better adapt to the changing environment, but we usually are not aware of it. It is very interesting that the color usage in Western paintings in the past had been greatly affected by color constancy until the emergence of Impressionism. However, this fact has not been fully appreciated by art historians. The purpose of this study is to understand how color constancy influences color usage in paintings, and to develop training protocols to bring the issue of color constancy into the painter’s awareness. Hopefully more creativity could be inspired by such a practice. In the experiment, the participants do some color matching task in both the normal mode with contextual effect and aperture mode without contextual effect. The results showed that the color perception in the aperture mode is more accurate and stable than that in the normal mode. The implications for art educators are discussed.