The study of neural generative models of human sketches is a fascinating contemporary modeling problem due to the links between sketch image generation and the human drawing process. The landmark SketchRNN provided breakthrough by sequentially generating sketches as a sequence of waypoints. However this leads to low-resolution image generation, and failure to model long sketches. In this paper we present B\'ezierSketch, a novel generative model for fully vector sketches that are automatically scalable and high-resolution. To this end, we first introduce a novel inverse graphics approach to stroke embedding that trains an encoder to embed each stroke to its best fit B\'ezier curve. This enables us to treat sketches as short sequences of paramaterized strokes and thus train a recurrent sketch generator with greater capacity for longer sketches, while producing scalable high-resolution results. We report qualitative and quantitative results on the Quick, Draw! benchmark.

本研究提出了BezierSketch作为全矢量、高分辨率的生成模型，采用新颖的逆向图形学方法将每个笔画嵌入到其最佳Bezier曲线中。通过使用这个模型，我们成功训练了一个具有更大容量生成长时间草图的递归草图生成器，并且取得了较好的定性和定量结果。

BézierSketch：可扩展矢量素描的生成模型