All Publications
GRACE: Loss-Resilient Real-Time Video through Neural Codecs.
In
NSDI, 2024.
We present a loss-resilient real-time video system called GRACE, which preserves the user's quality of experience (QoE) across a wide range of packet losses through an autoencoder-based neural video codec.
Online Overexposed Pixels Hallucination in Videos with Adaptive Reference Frame Selection.
In
arXiV, 2023.
We present a learning-based system to hallucinate HDR content in overexposed video sequences, without resorting to complex acquisition mechanisms like alternating exposures or costly processing typical of HDR imaging.
AI-Mediated 3D Video Conferencing.
In
SIGGRAPH Emerging Technologies, 2023.
We present an AI-mediated 3D video conferencing system that can reconstruct and autostereoscopically display a life-sized talking head using consumer-grade compute resources and minimal capture equipment.
VSS: A Storage System for Video Analytics.
In
SIGMOD, 2021.
A video storage system for video data management that enables fine-grained access to video content, caching, and redundancy elimination for overlapping field-of-view.
TASM: A Tile-Based Storage Manager for Video Analytics.
In
IEEE International Conference on Data Engineering, 2021.
A tile-based storage manager enabling spatial random access to encoded videos for analytics workloads.
VisualWorldDB: A DBMS for the Visual World.
In
Conference on Innovative Data Systems Research (CIDR), 2020.
paper (pdf),
bibtex
A vision and initial architecture for a new type of database system optimized for large-scale multicamera applications.
Vignette: Perceptual Compression for Video Storage and Processing Systems.
In
ACM Symposium on Cloud Computing (SoCC), 2019.
paper (pdf),
slides (pdf),
more recent slides (pdf),
bibtex,
SoCC Best Poster Award Winner
A system that integrates machine learning-improved compression with cloud video storage and distribution, compatible with modern codecs and hardware accelerators.
Visual Road: A Video Data Management Benchmark.
In
SIGMOD, 2019.
paper (pdf),
bibtex
A scalable analytics benchmark suite and video generator for video databases.
LightDB: A DBMS for Virtual Reality.
In
Proceedings of the VLDB Endowment (PVLDB) 11(10), 2018.
paper (pdf),
bibtex,
code (github)
A database management system designed for multi-dimensional video, like 360-degree and light field videos.
Application Codesign of Near-Data Processing for Similarity Search.
In
IEEE International Parallel and Distributed Processing Symposium (IPDPS), 2018.
paper (pdf),
bibtex
A k-nearest neighbors hardware accelerator using processing-in-memory, for content-based image retrieval.
A Hardware-Friendly Bilateral Solver for Real-Time Virtual Reality Video.
In
High Performance Graphics (HPG), 2017.
paper (pdf),
slides (pdf),
bibtex,
code (github),
blog post
A hardware-software codesign approach to accelerate a 16-camera VR video pipeline for real-time performance.
Exploring Computation-Communication Tradeoffs in Camera Systems.
In
IEEE International Symposium on Workload Characterization (IISWC), 2017.
paper (pdf),
slides (pdf),
bibtex
A data movement characterization for resource-constrained vision and VR camera hardware.
Principles and Techniques of Schlieren Imaging Systems.
In
Columbia University Computer Science Technical Reports, 2013.
,
bibtex
A survey paper on modern Schlieren optics systems.