KathaTrace: Diagnosing Semantic Trajectory Collapse in Generated Visual Narratives
arXiv, 2026

Recent story generators produce visually coherent image sequences, but coherence does not guarantee that the transition meaning of the source story survives. KathaTrace is a generator-agnostic protocol for diagnosing semantic trajectory collapse, evaluating each transition under text-only, image-only and text-plus-image evidence. It contributes KathaBench-25K and defines the Semantic Trajectory Gap, the transition meaning lost during visualisation.
