Artistic Low Poly rendering for images

作者：Gai, Meng^*; Wang, Guoping

来源：Visual Computer, 2016, 32(4): 491-500.

DOI：10.1007/s00371-015-1082-2

• Low poly
• Non-photorealistic rendering
• Image stylization
• Image decomposition

This paper presents an automatic approach for generating low poly rendering of images, which is particularly popular in the recent art design community. Distinguishing from the traditional image triangulation methods for the sake of compression or vectorization, we propose some critical principles of such Low Poly rendering problem, and simulate the artists creation procedures straightforwardly. To produce the visual effects with clear boundaries, we constrain the vertices along the feature edges extracted from the input image. By employing the Voronoi diagram iteration guided by a feature flow field, the vertices in the result image well reflect the feature structure of the local shape. Moreover, with the salient region detection, we can achieve different mesh densities between the front object and the background. Some special color processing techniques are employed to make our result more artistic. Our method works well on a wide variety of images, no matter raster photographs or artificial images. Experiments show that our approach is able to generate satisfying results similar to the artwork created by professional artists.

• 出版日期2016-4
• 单位北京大学