(The Eurographics Association, 2025) Morgan, Ingrid Ellen Carr; Billeter, Markus; Anjyo, Ken; Anjos, Rafael Kuffner dos; Berio, Daniel; Bruckert, Alexandre
Temporal 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.