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Zhengqiang ZHANG

12 accepted papers

2026

GDPO-SR: Group Direct Preference Optimization for One-Step Generative Image Super-Resolution

CVPR 2026

Recently, reinforcement learning (RL) has been employed for improving generative image super-resolution (ISR) performance. However, the current efforts are focused on multi-step generative ISR, while one-step generative ISR remains underexplored due to its limited stochasticity. In addition, RL meth

Cited by 0SourcecodeScholar
2026

VOSR: A Vision-Only Generative Model for Image Super-Resolution

CVPR 2026

Large-scale pre-trained text-to-image (T2I) diffusion models, such as Stable Diffusion, can be finetuned for image super-resolution (SR) with highly realistic details. While impressive, pre-training such multi-modal models demands billions of high-quality text-image pairs and substantial computation

Cited by 0SourcecodeScholar
2025

DP²O-SR: Direct Perceptual Preference Optimization for Real-World Image Super-Resolution

NeurIPS 2025poster

Benefiting from pre-trained text-to-image (T2I) diffusion models, real-world image super-resolution (Real-ISR) methods can synthesize rich and realistic details. However, due to the inherent stochasticity of T2I models, different noise inputs often lead to outputs with varying perceptual quality. Al…

Cited by 0SourceScholar
2025

FreCaS: Efficient Higher-Resolution Image Generation via Frequency-aware Cascaded Sampling

ICLR 2025poster

While image generation with diffusion models has achieved a great success, generating images of higher resolution than the training size remains a challenging task due to the high computational cost. Current methods typically perform the entire sampling process at full resolution and process all fre…

2025

GPSToken: Gaussian Parameterized Spatially-adaptive Tokenization for Image Representation and Generation

NeurIPS 2025poster

Effective and efficient tokenization plays an important role in image representation and generation. Conventional methods, constrained by uniform 2D/1D grid tokenization, are inflexible to represent regions with varying shapes and textures and at different locations, limiting their efficacy of featu…

Cited by 0SourcecodeScholar
2025

Generalized and Efficient 2D Gaussian Splatting for Arbitrary-scale Super-Resolution

ICCV 2025poster

Implicit Neural Representations (INR) have been successfully employed for Arbitrary-scale Super-Resolution (ASR). However, INR-based models need to query the multi-layer perceptron module numerous times and render a pixel in each query, resulting in insufficient representation capability and low com…

2025

One-Step Diffusion for Detail-Rich and Temporally Consistent Video Super-Resolution

NeurIPS 2025poster

It is a challenging problem to reproduce rich spatial details while maintaining temporal consistency in real-world video super-resolution (Real-VSR), especially when we leverage pre-trained generative models such as stable diffusion (SD) for realistic details synthesis. Existing SD-based Real-VSR me…

Cited by 0SourceScholar
2025

Spatial-Mamba: Effective Visual State Space Models via Structure-Aware State Fusion

ICLR 2025poster

Selective state space models (SSMs), such as Mamba, highly excel at capturing long-range dependencies in 1D sequential data, while their applications to 2D vision tasks still face challenges. Current visual SSMs often convert images into 1D sequences and employ various scanning patterns to incorpora…

2025

SyncNoise: Geometrically Consistent Noise Prediction for Instruction-based 3D Editing

AAAI 2025technical

Text-based 2D diffusion models have demonstrated impressive capabilities in image generation and editing. Meanwhile, the 2D diffusion models also exhibit substantial potentials for 3D editing tasks. However, how to achieve consistent edits across multiple viewpoints remains a challenge. While the it…

Cited by 0SourcePDFScholar
2024

Dense Multimodal Alignment for Open-Vocabulary 3D Scene Understanding

ECCV 2024poster

"Recent vision-language pre-training models have exhibited remarkable generalization ability in zero-shot recognition tasks. Previous open-vocabulary 3D scene understanding methods mostly focus on training 3D models using either image or text supervision while neglecting the collective strength of a…

2024

SeeSR: Towards Semantics-Aware Real-World Image Super-Resolution

CVPR 2024poster

Owe to the powerful generative priors the pre-trained text-to-image (T2I) diffusion models have become increasingly popular in solving the real-world image super-resolution problem. However as a consequence of the heavy quality degradation of input low-resolution (LR) images the destruction of local…