4 papers
Shot-Aware Frame Sampling for Video Understanding
Mengyu Zhao, Di Fu, Yongyu Xie +4
Video frame sampling is essential for efficient long-video understanding with Vision-Language Models (VLMs), since dense inputs are costly and often exceed context limits. Yet when…
Snapshot Compressive Imaging under Saturation: Theory, Mask Design, and Reconstruction
Mengyu Zhao, Shirin Jalali
Snapshot compressive imaging (SCI) acquires high-dimensional data cubes, such as videos and hyperspectral images, by optically multiplexing multiple coded frames into a single two-…
Theoretical Characterization of Effect of Masks in Snapshot Compressive Imaging
Mengyu Zhao, Shirin Jalali
Snapshot compressive imaging (SCI) refers to the recovery of three-dimensional data cubes-such as videos or hyperspectral images-from their two-dimensional projections, which are g…
Untrained Neural Nets for Snapshot Compressive Imaging: Theory and Algorithms
Mengyu Zhao, Xi Chen, Xin Yuan +1
Snapshot compressive imaging (SCI) recovers high-dimensional (3D) data cubes from a single 2D measurement, enabling diverse applications like video and hyperspectral imaging to go…