ECCV 2026 Oral

Scaling Multi-Reference Image Generation with Dynamic Reward Optimization

Wenwang Huang1,*, Yusen Fu1,*, Junjie Wang1, Mengfei Huang1, Yulin Li1, Gan Liu2, Jing Cai2, Yancheng He2, Zhuotao Tian1,3,†
1Harbin Institute of Technology, Shenzhen   |   2Independent Researcher   |   3Shenzhen Loop Area Institute
*Equal contribution   |   Corresponding author

Overview

News

The paper was selected as an Oral Presentation at ECCV 2026.

Training and inference code, training data, benchmark, and model weights were released.

DyRef was accepted by ECCV 2026.

Highlights

01

OmniRef-Bench

A benchmark for complex MRIG across diverse combinations of reference-image types and quantities. We find that current open-source models suffer a sharp performance drop on OmniRef-Bench as the number and diversity of reference images increase.

02

Superior Performance

By fine-tuning Qwen-Image-Edit-2511 on only approximately 14K training samples, our method achieves performance comparable to the closed-source Nano Banana Pro on OmniRef-Bench, while outperforming Seedream 4.5.

03

Generalization Across Diverse Tasks

The improvements of our method extend beyond OmniRef-Bench. It also delivers consistent gains on multi-reference image generation benchmarks, including OmniContext and MultiBanana, as well as single-image editing benchmarks, including DreamBench++ and ImgEdit.

DyRef motivation figure
Motivation. Open-source models exhibit a sharp performance drop as the number and diversity of reference images increase on OmniRef-Bench.
DyRef radar plot
Quantitative profile. DyRef achieves consistent improvements across multiple benchmarks for both multi-reference image generation and single-image editing.

Reference Cases

Generated result for DyRef case one

Case 1

Subject + Style + Background

Prompt. A woman wearing a wide-brimmed hat in reference image 1 stands beside a brown yak grazing on lush green grass in reference image 2. With visual aesthetics matching reference image 3. Against the backdrop shown in reference image 4.

Reference womanwoman
Reference brown yakyak
Style referencestyle
Reference backgroundbackground
Generated result for DyRef case two

Case 2

Subject + Style + Background

Prompt. A black motorcycle helmet in image 1 resting on rich soil beside a giant radish in image 2, with a tuna fish in image 3 leaping from the ocean. With visual aesthetics matching image 4. Set against the background from image 5.

Reference helmethelmet
Reference radishradish
Reference tuna fishtuna
Style referencestyle
Reference backgroundbackground
Generated result for DyRef case three

Case 3

Subject + Style + Background

Prompt. A heavy-duty electric drill in reference image 1 resting on a sunlit hill where a giraffe stands tall in reference image 2, a neon-colored volleyball in reference image 3 nestled in the grass nearby, and a zippered pencil case in reference image 4 placed casually beside them. Stylistically resembling reference image 5. Set against the background from reference image 6.

Reference drilldrill
Reference giraffegiraffe
Reference volleyballvolleyball
Reference pencil casepencil case
Style referencestyle
Reference backgroundbackground
Generated result for DyRef case four

Case 4

Subject + Pose

Prompt. A shiba inu in reference image 1 stands protectively near an elderly man with glasses in reference image 2 and a woman in a yellow sweater in reference image 3, holding a Damascus steel knife in reference image 4 and a black baseball bat in reference image 5. Tension fills a dimly lit urban alleyway, cinematic composition with the dog as the focal point, muted tones with the yellow sweater as a striking accent, shallow depth of field. The elderly man adopts the body position from reference image 6.

Reference shiba inushiba inu
Reference elderly manelderly man
Reference womanwoman
Reference knifeknife
Reference baseball batbat
Pose referencepose
Generated result for DyRef case five

Case 5

Subject + Pose + Lighting

Prompt. A young woman in reference image 1 kneeling on the grass points at a flower while a boy in reference image 2 crouching beside her listens, and an elderly man in reference image 3 bending forward, mirroring the pose in reference image 4. Make sure their whole bodies are visible. Use the lighting approach of reference image 5.

Reference young womanyoung woman
Reference boyboy
Reference elderly manelderly man
Pose referencepose
Lighting referencelighting
Generated result for DyRef case six

Case 6

Subject + Pose + Background + Style

Prompt. A woman in image 1 crouching with a red frisbee in image 4 while a boy in image 2 kneeling beside her watches a brown dog in image 3 mid-jump trying to catch it, with visual aesthetics matching image 5. Make sure their whole bodies are visible. Set against the background from image 6. The woman mimicking the posture shown in image 7.

Reference womanwoman
Reference boyboy
Reference brown dogdog
Reference red frisbeefrisbee
Style referencestyle
Reference backgroundbackground
Pose referencepose

Method

DyRef method figure
Framework. SFT provides the base MRIG ability, while DRS and DAR guide reward optimization.

Resources

Citation

@article{huang2026scaling,
  title={Scaling Multi-Reference Image Generation with Dynamic Reward Optimization},
  author={Huang, Wenwang and Fu, Yusen and Wang, Junjie and Huang, Mengfei and Li, Yulin and Liu, Gan and Cai, Jing and He, Yancheng and Tian, Zhuotao},
  journal={arXiv preprint arXiv:2606.26947},
  year={2026}
}