Artistic Portrait Drawing with Vector Strokes

• URL: http://arxiv.org/abs/2410.04182v1
• Date: Sat, 5 Oct 2024 14:55:53 GMT
• Title: Artistic Portrait Drawing with Vector Strokes
• Authors: Yiqi Liang, Ying Liu, Dandan Long, Ruihui Li,
• Abstract summary: We present a method, VectorPD, for converting a given human face image into a vector portrait sketch. Since vector graphics are composed of different shape primitives, it is challenging for rendering complex faces to accurately express facial details and structure.
• Score: 7.281215486388827
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In this paper, we present a method, VectorPD, for converting a given human face image into a vector portrait sketch. VectorPD supports different levels of abstraction by simply controlling the number of strokes. Since vector graphics are composed of different shape primitives, it is challenging for rendering complex faces to accurately express facial details and structure. To address this, VectorPD employs a novel two-round optimization mechanism. We first initialize the strokes with facial keypoints, and generate a basic portrait sketch by a CLIP-based Semantic Loss. Then we complete the face structure through VGG-based Structure Loss, and propose a novel Crop-based Shadow Loss to enrich the shadow details of the sketch, achieving a visually pleasing portrait sketch. Quantitative and qualitative evaluations both demonstrate that the portrait sketches generated by VectorPD can produce better visual effects than existing state-of-the-art methods, maintaining as much fidelity as possible at different levels of abstraction.

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