基於畫家畫作的馬賽克繪畫風格之合成

Abstract

Chuck Close是一位當代美國畫家，以巨幅的寫實肖像畫聞名，本篇論文要模仿的畫風即為該畫家的其中一種繪畫風格，繪畫過程以人像照片為參考，並將照片分割成許多小方格，再依每個照片方格的樣子畫在畫布上，因此具有馬賽克拼貼的概念。這種風格也常被認為具有點描畫的特性，因為近看時格子的色彩豐富，遠看則因視覺混合而能看到寫實的畫像。但是作畫時間很長，而且一般人很難畫出這種風格的畫，所以本篇提出一個方法可以自動將任何圖片轉換成該種風格。

Chuck Close is an American contemporary artist who is famed for his realistic paintings, through his massive-scale portraits. The objective of this thesis is to mimic one of this painting style. In the painting process, a photo is taken as the reference, then he puts a grid on the photo and also on the canvas and paints on cells of the canvas according to those of the photo. Therefore, this painting style is similar to mosaic tiles. Also, it is usually referred to as pointillism because he uses many colors in a small cell. When getting closer, it looks very colorful. But stand far enough, colors are fused through optical color mixing, and then a photorealistic painting arises consequently. However, the painting process is time-consuming. It is hard for common people to paint like that. Accordingly, we propose an approach to transfer an input image to this style automatically.