4 papers
DynaTokens: Teaching Dynamics to Camera-Controlled Video Models at Test Time
Ziqi Ma, Ma Ziqi, Hongqiao Chen +3
Video generation must account for two sources of motion, one induced by the observer's camera path and the other caused by scene dynamics. An ideal camera-controlled video model sh…
Semantic-level Backdoor Attack against Text-to-Image Diffusion Models
Tianxin Chen, Wenbo Jiang, Hongqiao Chen +2
Text-to-image (T2I) diffusion models are widely adopted for their strong generative capabilities, yet remain vulnerable to backdoor attacks. Existing attacks typically rely on fixe…
Linear Mechanisms for Spatiotemporal Reasoning in Vision Language Models
Raphi Kang, Hongqiao Chen, Georgia Gkioxari +1
Spatio-temporal reasoning is a remarkable capability of Vision Language Models (VLMs), but the underlying mechanisms of such abilities remain largely opaque. We postulate that visu…
Feedforward 3D Editing via Text-Steerable Image-to-3D
Ziqi Ma, Hongqiao Chen, Yisong Yue +1
Recent progress in image-to-3D has opened up immense possibilities for design, AR/VR, and robotics. However, to use AI-generated 3D assets in real applications, a critical requirem…