activity
20182026
most citedAppending Adversarial Frames for Universal Video Attack

11 citations · 24 across the 13 of their papers we have counts for

collaborators

14 papers

cs.CV2026

TwinPrune: Density-Aware Two-Phase Token Pruning for Vision-Language Models

Kai Liu, Anqi Li, Junxian Li +4

We propose a unified spatial-density signal to score token importance for both inference phases: bipartite merge for prefill and KV eviction for decode, yielding measurable gains i…

cs.CV2026

Illuminating Unified Multimodal Model for Free-form Interleaved Text-Image Generation

Chonghuinan Wang, Zhikai Chen, Chunwei Wang +9

The advancement of generative AI models capable of producing text and image marks a critical step forward in the realm of multimodal intelligence, particularly for tasks involving…

cs.CV2026

ShotCrop: Cropping Human-Centric Images into Cinematic Triple-Shot Compositions

Dehong Kong, Lina Lei, Lingtao Zheng +10

Prior work on aesthetic composition typically produces a single aesthetically pleasing crop, overlooking the narrative value of composing multiple shots from one scene. In practice…

cs.CV2026

PermuQuant: Lowering Per-Group Quantization Error by Reordering Channels for Diffusion Models

Yongsen Cheng, Kai Liu, Kaiwen Tao +5

Large-scale visual generative models have achieved remarkable performance. However, their high computational and memory costs make deployment challenging in resource-constrained sc…

cs.CV2026

Accelerating Rectified Flow Models via Trajectory-Aware Caching

Xiao Liu, Kai Liu, Naiyang Guan +5

Diffusion and rectified flow (RF) models generate high-fidelity images and videos, but their iterative velocity-field evaluations are computationally expensive. Existing caching me…

cs.CV2026

GTR: Generation-Guided Visual Token Reduction for Separate-Encoder Unified Multimodal Models

Junxian Li, Kai Liu, Zizhong Ding +4

The development of separate-encoder Unified multimodal models (UMMs) comes with a rapidly growing inference cost due to dense visual token processing. In this paper, we focus on un…

cs.CV2026

HP-Edit: A Human-Preference Post-Training Framework for Image Editing

Fan Li, Chonghuinan Wang, Lina Lei +9

Common image editing tasks typically adopt powerful generative diffusion models as the leading paradigm for real-world content editing. Meanwhile, although reinforcement learning (…

cs.AI2025

UmniBench: Unified Understand and Generation Model Oriented Omni-dimensional Benchmark

Kai Liu, Leyang Chen, Wenbo Li +5

Unifying multimodal understanding and generation has shown impressive capabilities in cutting-edge proprietary systems. However, evaluations of unified multimodal models (UMMs) rem…

cs.CV2024

Learning Spatial Adaptation and Temporal Coherence in Diffusion Models for Video Super-Resolution

Zhikai Chen, Fuchen Long, Zhaofan Qiu +4

Diffusion models are just at a tipping point for image super-resolution task. Nevertheless, it is not trivial to capitalize on diffusion models for video super-resolution which nec…

cs.CV2023

Inter-frame Accelerate Attack against Video Interpolation Models

Junpei Liao, Zhikai Chen, Liang Yi +3

Deep learning based video frame interpolation (VIF) method, aiming to synthesis the intermediate frames to enhance video quality, have been highly developed in the past few years.…

cs.CR2022★ 1 cited

Anti-Forgery: Towards a Stealthy and Robust DeepFake Disruption Attack via Adversarial Perceptual-aware Perturbations

Run Wang, Ziheng Huang, Zhikai Chen +3

DeepFake is becoming a real risk to society and brings potential threats to both individual privacy and political security due to the DeepFaked multimedia are realistic and convinc…

cs.CV2021★ 4 cited

MagDR: Mask-guided Detection and Reconstruction for Defending Deepfakes

Zhikai Chen, Lingxi Xie, Shanmin Pang +2

Deepfakes raised serious concerns on the authenticity of visual contents. Prior works revealed the possibility to disrupt deepfakes by adding adversarial perturbations to the sourc…

cs.CV2019★ 11 cited

Appending Adversarial Frames for Universal Video Attack

Zhikai Chen, Lingxi Xie, Shanmin Pang +2

There have been many efforts in attacking image classification models with adversarial perturbations, but the same topic on video classification has not yet been thoroughly studied…

cs.CV2018★ 8 cited

Unsupervised Single Image Deraining with Self-supervised Constraints

Xin Jin, Zhibo Chen, Jianxin Lin +2

Most existing single image deraining methods require learning supervised models from a large set of paired synthetic training data, which limits their generality, scalability and p…