Morgan, Ingrid Ellen CarrBilleter, MarkusAnjyo, KenAnjos, Rafael Kuffner dosBerio, DanielBruckert, Alexandre2025-05-092025-05-092025978-3-03868-272-1https://doi.org/10.2312/exw.20251066https://diglib.eg.org/handle/10.2312/exw20251066Temporal coherence is a long-standing issue within Non-Photorealistic Rendering (NPR). The problem has been defined as a trade-off between the three main factors: flatness, temporal continuity and motion coherence. Approaches that improve temporal coherence are applied across different styles within diverse animation contexts. We have implemented a watercolour renderer that supports multiple temporal coherence approaches in a unified system to investigate this trade-off. The approaches are then evaluated against existing work, with consideration of how external factors including animations and textures may influence perceived incoherence.Attribution 4.0 International LicenseCCS Concepts: Computing methodologies → Non-photorealistic rendering; Animation; PerceptionComputing methodologies → Nonphotorealistic renderingAnimationPerception10.2312/exw.202510664 pages