色序法顯示器之色分離視覺模型

Abstract

色序法其原理是利用三原色場在人眼視覺暫留的時間內所提供的光刺激累加來合成彩色的圖像，也就是說將彩色影像的三原色成分，分別呈現在三個不同的顯示時段，而得到色彩繽紛的彩色顯示效果。雖然它具有比目前其他的顯示技術俱有更好的顯色特性，卻存在著一個潛在的缺陷──色分離(CBU)，除了會降低顯示影像的品質外，長時間的觀看亦有可能造成眼睛的疲勞，是一個不可忽視的現象。 基於以上論述，研究主要將分為架構完整的改善機制，以現有的色序法液晶顯示器與投影技術為平台建立一個模型對CBU進行量化、評估與改善，最後利用色序法顯示器特性與CBU關聯為基礎將此模型應用在液晶顯示器上以提升影像品質。

Field-sequential color (FSC) formation mechanism, which displays multi-primary color fields in temporal sequence to form a full-color frame, is an effective way to generate full color images. Color break-up (CBU), however, has appeared intrinsically in FSC-type displays to degrade visual quality, and thus been investigated in the past decades. In this study, we first purposed “Color Break-Up Angle (CBUA)” to model the effect of entire image with CBU. Then, a psychophysical experiment was performed by using a convenient apparatus to derive the indistinguishable CBUA. Finally, the CBU suppression can be designed and verified for various sizes of FSC displays to improve image quality.