由3D模型自動產生由格子組成之歐普藝術影像

Abstract

歐普藝術中歐普是「Optical」，是一種視覺效應的藝術。歐普藝術作品經常利用簡單的幾何形狀規律地排列造成空間的錯覺。然而要建立這種能產生錯視覺的歐普藝術作品並非相當容易。本篇論文探討的是由方格組成的歐普藝術作品，藉由三維模型提供的深度資訊判斷哪些方格應該產生形變，形變之後被放大的方格會有膨脹的效果，就像是在二維空間中凸出一顆球。此外，系統會對所有方格分別做形變，目的是希望做出的歐普藝術作品不僅有凸出來的效果，還能兼具描繪三維模型本身表面的凹凸結構。藉由使用我們的系統，使用者能夠輕鬆地繪出由方格組成的歐普藝術作品。

Op Art, also called Optical Art, is a type of visual art that associated with optical illusions. Op art painters created optical spaces through the manipulation of simple repetitive forms. However, manual design of Op artwork is not an easy task. In this thesis, we focus on the Op artworks which are formed by squares. Instead of thinking which squares should be deformed, user can select a 3D model as input which already gives the depth information. By using the depth information, we can deform the squares to create 3D-like illusion which is like a ball. Besides, we propose a method to show the surface structure by perturbing the points by the neighbors of the square. Our system enables users to create the square-based Op artwork easily.