Jul 2014 – Feb 2016 · 1 yr 7 mos · San Francisco Bay Area

• Involved in the development of AppDisk, a virtualization technology that enables packaging and delivering applications in virtual disks, independent of the golden base image.
• Worked on developing Personal vDisk, a virtualization technology that facilitates personalization by storing user's applications and profile on a separate dedicated virtual disk.
• Also involved in the development of a rules-based engine that drives file system and registry virtualization.
• Revamped the WiX-based installer to achieve better performance and ease of maintenance.

Sep 2013 – May 2014 · 8 mos · San Francisco Bay Area

• Project goal: To improve user experience in indoor navigation with the help of augmented reality.
• Demonstrated (with an Android-based prototype) that Indoor Positioning Systems, when augmented with relevant information on the user interface, can be much more useful than just for localizing objects.
• Built logic to determine the user's location and orientation using a location API simulator and the orientation sensors in the mobile device.
• Rendered relevant graphical information, determined based on the user’s context and selection, using OpenGL vertex and fragment shaders on top of the live camera stream.
• Conducted target user interviews to evaluate effectiveness of our approach.
• Publication: http://www.eecs.berkeley.edu/Pubs/TechRpts/2014/EECS-2014-73.html
• GitHub: https://github.com/axzhong3/ARVisionMap

Jun 2011 – Jul 2013 · 2 yrs 1 mo

• Involved in development and debugging of Nvidia's stereo graphics driver on Windows.
• Developed stereo driver to support Windows 8 native stereo technology.
• Enhanced stereo driver for multi-GPU systems, achieving a performance gain of about 40%.
• Designed and implemented stereolization of WebGL based in-browser graphics.
• Developed driver to render stereo on Glassless 3D displays, 3D TVs and multi-monitor systems.
• Redesigned memory management of USB stereo emitter in the kernel mode driver.
• Implemented a new approach of stereo game profiling, which significantly enhanced 3D gaming experience.

Jul 2010 – May 2011 · 10 mos

• Designed a novel approach of generating a 3D image from two mutually shifted snapshots of a scene, captured using a basic digital camera.
• Researched global, block & pixel motion estimation and feature point detection algorithms.
• Studied CUDA (Compute Unified Device Architecture) and analyzed program execution times with the help of visual profiling tools.