arXiv Computer Vision
Aug 25

VISTA: Test-Time Compositional Alignment for Visual Autoregressive Generation

VISTA is a gradient‑based test‑time alignment framework designed for next‑scale visual autoregressive (VAR) image generation. It optimizes intermediate representations within the frozen transformer to enforce compositional constraints, without altering model weights or requiring extra training. Experiments on two benchmarks and two model scales show that VISTA improves compositional accuracy by up to 20% on a 2B backbone and 6% on an 8B backbone, while preserving image quality and enabling a smaller model to outperform a larger one.

By Hossein Shahabadi, Niki Sepasian, Mahdieh Soleymani Baghshah