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cs.CV2026
CHASM: Cross-frequency Harmonized Axis-Separable Mixing for Spectral Token Operators
Pengcheng Fang, Hongli Chen, Yuxia Chen +3
Spectral token mixers based on Fourier transforms provide an efficient way to model global interactions in visual feature maps. Existing designs often either apply filter-wise spec…
cs.CV2025
When and What: Diffusion-Grounded VideoLLM with Entity Aware Segmentation for Long Video Understanding
Pengcheng Fang, Yuxia Chen, Rui Guo
Understanding videos requires more than answering open ended questions, it demands the ability to pinpoint when events occur and how entities interact across time. While recent Vid…