UniRain: Unified Image Deraining with RAG-based Dataset Distillation and Multi-objective Reweighted Optimization

This paper proposes UniRain, a unified image deraining framework that combines a RAG-based dataset distillation pipeline for selecting high-quality training samples and a multi-objective reweighted optimization strategy within an asymmetric MoE architecture to effectively restore images degraded by diverse rain streaks and raindrops across both daytime and nighttime conditions.

Qianfeng Yang, Qiyuan Guan, Xiang Chen + 3 more2026-03-05💻 cs

When Visual Evidence is Ambiguous: Pareidolia as a Diagnostic Probe for Vision Models

This paper introduces a diagnostic framework using face pareidolia to reveal that vision models' behavior under visual ambiguity is primarily governed by their representational architecture, with vision-language models exhibiting semantic overactivation, pure vision models adopting uncertainty-based abstention, and detection models relying on conservative priors to suppress false positives.

Qianpu Chen, Derya Soydaner, Rob Saunders2026-03-05🤖 cs.AI

Rethinking the Efficiency and Effectiveness of Reinforcement Learning for Radiology Report Generation

This paper proposes a novel framework for radiology report generation that enhances reinforcement learning efficiency through a diagnostic diversity-based data sampling strategy and a Diagnostic Token-weighted Policy Optimization (DiTPO) method, achieving state-of-the-art clinical accuracy with significantly fewer training samples by prioritizing diagnostically critical content.

Zilin Lu, Ruifeng Yuan, Weiwei Cao + 6 more2026-03-05💻 cs

Volumetric Directional Diffusion: Anchoring Uncertainty Quantification in Anatomical Consensus for Ambiguous Medical Image Segmentation

The paper proposes Volumetric Directional Diffusion (VDD), a novel framework that anchors generative trajectories to a deterministic consensus prior to predict 3D boundary residuals, thereby achieving state-of-the-art anatomically coherent uncertainty quantification for ambiguous medical image segmentation while avoiding the topological fractures common in standard diffusion models.

Chao Wu, Kangxian Xie, Mingchen Gao2026-03-05🤖 cs.AI