Publications (9)
Ultrafast electron vortex produced by a grating made of light
Zichen Li, Hao Liang, Yuan Gu +9
The generation of vortex matter waves carrying quantized orbital angular momentum is challenging and relies heavily on the material nanofabrication methods due to their extremely s…
Dynamical phase evolution of Coulomb-focused electrons in strong-field ionization probed by a standing light wave
Yuan Gu, Hao Liang, Weiran Zheng +13
We investigate the dynamical phase evolution of Coulomb-focused electrons in strong-field ionization. We diffract the electrons with an ultrashort standing light wave to track thei…
Lane Boundary Geometry Extraction from Satellite Imagery
Andi Zang, Runsheng Xu, Zichen Li +1
Autonomous driving car is becoming more of a reality, as a key component,high-definition(HD) maps shows its value in both market place and industry. Even though HD maps generation…
Constraining the global mean surface temperature during 1850-1880 with new statistical physical model
Qingxiang Li, Zichen Li, Xuqian Li +8
As IPCC ARs stated, global warming is estimated based on the average from 1850 to 1900 (global average temperature of preindustrialization estimated from relatively sparse observat…
Evolution of the contact between rough viscoelastic solids after decreasing loads: memory erasure and monotonic increase
Zichen Li, Renald Brenner, Lucas Frérot
The real area of contact governs, in part, the magnitude of the friction force, yet its time evolution in rough viscoelastic interfaces remains incompletely understood. In experime…
Profit Maximization In Arbitrage Loops
Yu Zhang, Zichen Li, Tao Yan +3
Cyclic arbitrage chances exist abundantly among decentralized exchanges (DEXs), like Uniswap V2. For an arbitrage cycle (loop), researchers or practitioners usually choose a specif…
DFIR-DETR: Frequency-Domain Iterative Refinement and Dynamic Feature Aggregation for Small Object Detection
Bo Gao, Jingcheng Tong, Xingsheng Chen +2
Small object detection in complex scenes exposes a fundamental tension in neural network design: backbone attention distributes computation uniformly regardless of content, pyramid…
Real-time Face Mask Detection in Video Data
Yuchen Ding, Zichen Li, David Yastremsky
In response to the ongoing COVID-19 pandemic, we present a robust deep learning pipeline that is capable of identifying correct and incorrect mask-wearing from real-time video stre…
ArbiText: Arbitrary-Oriented Text Detection in Unconstrained Scene
Daitao Xing, Zichen Li, Xin Chen +1
Arbitrary-oriented text detection in the wild is a very challenging task, due to the aspect ratio, scale, orientation, and illumination variations. In this paper, we propose a nove…