CoGenRec

Complementary vision · Generative reconstruction

CoGenRec: A Unified Generative Framework for Complementary Vision Reconstruction

Yapeng Meng1 Yuguo Chen1 Xiangru Chen1 Shaojun Xu1 Xuezhen Wang3 Lijian Wang1 Zheyu Yang4 Yihan Lin2,* Luping Shi1 Rong Zhao1,*
1 Department of Precision Instrument, Tsinghua University 2 Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University 3 The Hong Kong University of Science and Technology 4 Primevision Technology

* Corresponding authors

Overview

Reconstructing sharp, high-frame-rate HDR video from complementary RGB and spatio-temporal measurements.

CoGenRec architecture. COP RGB exposure centers align with intra-exposure SD and inter-exposure sampling instants; TD spans adjacent times. Multi-scale temporal features guide ControlNet, the diffusion backbone and detail-preserving VAE decoding.
COP RGB exposure centers align with intra-exposure SD and inter-exposure sampling instants; TD spans adjacent times. TD and SD are horizontally mirrored; middle times are omitted for readability. CoGenRec reconstruction: endpoint encoders and bidirectional temporal propagation supply multi-scale guidance to ControlNet and detail fusion; the diffusion backbone and VAE decoder output RGB video. Exposure-aware endpoint encoder: cross-attention fuses the TD and SD branches into hierarchical RGB features at four scales. Bidirectional recurrent temporal propagator: inter-exposure TD and SD update forward and backward streams anchored at the two RGB endpoints.

The complementary vision sensor captures spatially dense RGB frames alongside high-speed spatial and temporal difference signals. CoGenRec combines these measurements with a video generative prior to jointly address motion blur, temporal undersampling, and exposure clipping.

01
Restore sharp structures

Use intra-exposure cues to recover motion-blurred RGB frames.

02
Recover motion between frames

Use inter-exposure measurements for high-frame-rate reconstruction.

03
Fuse complementary exposure information

Combine the two sensing pathways for HDR reconstruction.

Method comparisons

Spinning disc

  • 757 FPS
  • Fast motion
  • Blur
Input RGB30 FPS
Input RGB comparison preview
Tianmouc-UNetOfficial weights
Tianmouc-UNet comparison preview
IGFNetOfficial weights
IGFNet comparison preview
CBRDMOfficial weights
CBRDM comparison preview
CoGenRec
CoGenRec comparison preview

Rotating blocks

  • 757 FPS
  • Fast motion
  • Blur
Input RGB30 FPS
Input RGB comparison preview
Tianmouc-UNetOfficial weights
Tianmouc-UNet comparison preview
IGFNetOfficial weights
IGFNet comparison preview
CBRDMOfficial weights
CBRDM comparison preview
CoGenRec
CoGenRec comparison preview

Cartoon poster

  • 757 FPS
  • HDR
Input RGB30 FPS
Input RGB comparison preview
Tianmouc-UNetOfficial weights
Tianmouc-UNet comparison preview
IGFNetOfficial weights
IGFNet comparison preview
CBRDMOfficial weights
CBRDM comparison preview
CoGenRec
CoGenRec comparison preview

Sunlit facade

  • 757 FPS
  • HDR
Input RGB30 FPS
Input RGB comparison preview
Tianmouc-UNetOfficial weights
Tianmouc-UNet comparison preview
IGFNetOfficial weights
IGFNet comparison preview
CBRDMOfficial weights
CBRDM comparison preview
CoGenRec
CoGenRec comparison preview

Passing motorcycle

  • 757 FPS
  • Fast motion
  • Blur
Input RGB30 FPS
Input RGB comparison preview
Tianmouc-UNetOfficial weights
Tianmouc-UNet comparison preview
IGFNetOfficial weights
IGFNet comparison preview
CBRDMOfficial weights
CBRDM comparison preview
CoGenRec
CoGenRec comparison preview

Resources

Code & models

Citation
@misc{meng2026cogenrecunifiedgenerativeframework,
      title={CoGenRec: A Unified Generative Framework for Complementary Vision Reconstruction},
      author={Yapeng Meng and Yuguo Chen and Xiangru Chen and Shaojun Xu and Xuezhen Wang and Lijian Wang and Zheyu Yang and Yihan Lin and Luping Shi and Rong Zhao},
      year={2026},
      eprint={2611.07665},
      archivePrefix={arXiv},
      primaryClass={cs.CV},
      url={https://arxiv.org/abs/2611.07665},
}