We present a novel freehand sketch beautification method, which takes as input a freely drawn sketch of a man-made object and automatically beautifies it both geometrically and structurally. Beautifying a sketch is challenging because of its highly abstract and heavily diverse drawing manner. Existing methods are usually confined to the distribution of their limited training samples and thus cannot beautify freely drawn sketches with rich variations. To address this challenge, we adopt a divide-and-combine strategy. Specifically, we first parse an input sketch into semantic components, beautify individual components by a learned part beautification module based on part-level implicit manifolds, and then reassemble the beautified components through a structure beautification module. With this strategy, our method can go beyond the training samples and handle novel freehand sketches. We demonstrate the effectiveness of our system with extensive experiments and a perceptive study.

本文介绍了一种新的手绘草图美化方法，该方法通过将输入草图解析为语义组件，基于零件级隐式流形学习部分美化模块进行独立部分的美化，然后通过结构美化模块重新组装美化后的组件，从而超越训练样本，处理新颖的手绘草图。

素描美化：学习人造物品素描部件美化及结构精炼