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cs.CV2026
PIVOT: Pivot-Aware On Policy Self Distillation for Multi-Turn VLM Agents
Jiazhou Zhou, Hu Zhou, Yucheng Chen +3
Reinforcement learning with verifiable rewards (RLVR) via Group-Relative Policy Optimization (GRPO) is widely used for multi-turn VLM agent training, yet it suffers from zero-gradi…
cs.CV2026
SegVGGT: Joint 3D Reconstruction and Instance Segmentation from Multi-View Images
Jinyuan Qu, Hongyang Li, Lei Zhang
3D instance segmentation methods typically rely on high-quality point clouds or posed RGB-D scans, requiring complex multi-stage processing pipelines, and are highly sensitive to r…