Reinforcement Learning in Vision: A Survey

• URL: http://arxiv.org/abs/2508.08189v2
• Date: Thu, 14 Aug 2025 14:32:17 GMT
• Title: Reinforcement Learning in Vision: A Survey
• Authors: Weijia Wu, Chen Gao, Joya Chen, Kevin Qinghong Lin, Qingwei Meng, Yiming Zhang, Yuke Qiu, Hong Zhou, Mike Zheng Shou,
• Abstract summary: This survey offers a critical and up-to-date synthesis of the field.<n>We first formalize visual RL problems and trace the evolution of policy-optimization strategies.<n>We distill trends such as curriculum-driven training, preference-aligned diffusion, and unified reward modeling.
• Score: 36.820183535103695
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Recent advances at the intersection of reinforcement learning (RL) and visual intelligence have enabled agents that not only perceive complex visual scenes but also reason, generate, and act within them. This survey offers a critical and up-to-date synthesis of the field. We first formalize visual RL problems and trace the evolution of policy-optimization strategies from RLHF to verifiable reward paradigms, and from Proximal Policy Optimization to Group Relative Policy Optimization. We then organize more than 200 representative works into four thematic pillars: multi-modal large language models, visual generation, unified model frameworks, and vision-language-action models. For each pillar we examine algorithmic design, reward engineering, benchmark progress, and we distill trends such as curriculum-driven training, preference-aligned diffusion, and unified reward modeling. Finally, we review evaluation protocols spanning set-level fidelity, sample-level preference, and state-level stability, and we identify open challenges that include sample efficiency, generalization, and safe deployment. Our goal is to provide researchers and practitioners with a coherent map of the rapidly expanding landscape of visual RL and to highlight promising directions for future inquiry. Resources are available at: https://github.com/weijiawu/Awesome-Visual-Reinforcement-Learning.

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