🎓 Second-year PhD Student at HKUST (Guangzhou), Robotics and Autonomous Systems (ROAS)
🔬 Research Interests: Generative Models, Reward Modeling, Vision Agents, Visual Perception
🧠 Current Focus: High-quality post-training, human-aligned reward modeling, multimodal agentic RL, and unified reasoning for visual understanding and generation
🌐 Website: ephemeral182.github.io
📧 Email: [email protected]

I’m Sixiang Chen (陈思翔), advised by Prof. Lei Zhu and Prof. Fugee Tsung.
My work explores how generative and unified models can unlock new potential in image understanding and creation.

I believe research should matter to real users.
Some projects I lead — especially the PosterX series such as PosterCraft, PosterOmni, and PosterReward — aim to build dependable tools for designers and broader creative communities, while also pushing forward general post-training and alignment for image-text foundation models.

• 🧠 High-Quality Post-Training for Generative Models
  Building post-training and alignment methods for high-quality image-text generation and editing, with a focus on reward modeling, preference learning.

• 📏 Reward Modeling and Preference Alignment
  Designing reward models that align AI outputs with human standards in aesthetics, structure, typography, and usability.

• 🤖 Vision Agents & Unified Reasoning
  Exploring multimodal agentic RL and unified models for open-world visual understanding, generation, and reasoning.

A unified framework for generalized multi-task poster creation and editing, covering both local refinement and global design.

A reward model for accurate evaluation and alignment of high-quality graphic design generation.

Rethinking high-quality aesthetic poster generation in a unified framework.

• Feb 2026 — PosterOmni accepted by CVPR 2026
• Feb 2026 — PosterReward accepted by CVPR 2026
• Jan 2026 — PosterCraft accepted by ICLR 2026
• Jun 2025 — GenHaze accepted by ICCV 2025
• Apr 2025 — Released the GPT-4o Image Generation Capabilities evaluation report
• 2025 — Multiple papers accepted by CVPR / ICCV / AAAI
• 2024 — Papers accepted by NeurIPS / ECCV / CVPR, including CVPR 2024 Highlight

High-Quality Post-Training · Unified Model · Reward Modeling · Vision Agents · Image-Text Generation

Type	Tools
Writing / Academic
AI Research Assistants
Development / Coding
Training / Infra
Design / Prototyping