Example‐Based Colour Transfer for 3D Point Clouds

• Published in: Computer graphics forum Vol. 40; no. 6; pp. 428 - 446
• Main Authors: Goudé, Ific, Cozot, Rémi, Le Meur, Olivier, Bouatouch, Kadi
• Format: Journal Article
• Language: English
• Published: Oxford Blackwell Publishing Ltd 01.09.2021; Wiley
• Subjects: Color; Computer Science; Image Processing; methods and applications; Neural networks; point‐based graphics; point‐based methods; rendering; Statistical analysis; Statistical methods; Three dimensional models; methods and applications; point-based methods; rendering; point-based graphics
• ISSN: 0167-7055; 1467-8659
• DOI: 10.1111/cgf.14388

Example‐based colour transfer between images, which has raised a lot of interest in the past decades, consists of transferring the colour of an image to another one. Many methods based on colour distributions have been proposed, and more recently, the efficiency of neural networks has been demonstrated again for colour transfer problems. In this paper, we propose a new pipeline with methods adapted from the image domain to automatically transfer the colour from a target point cloud to an input point cloud. These colour transfer methods are based on colour distributions and account for the geometry of the point clouds to produce a coherent result. The proposed methods rely on simple statistical analysis, are effective, and succeed in transferring the colour style from one point cloud to another. The qualitative results of the colour transfers are evaluated and compared with existing methods. Rendering a church point cloud (input) with the colour style of a fantasy house point cloud (target) using our colour transfer method.