User:Dllu
{{userpage}}
This is the userpage of dllu. I work on robotics. I enjoy programming, 2D vector graphics, 3D graphics, physics, and photography.
- 2008—2014 Bachelor of Applied Science, Engineering Physics at the University of British Columbia.
- 2014—2016 Master of Science, Robotics at Carnegie Mellon University.
- 2016—2020 Software Engineer, 3D mapping at Ouster, a manufacturer of automotive lidar.
- 2020-2021 Staff Software Engineer, Tempus Ex Machina, a startup
- 2021-2023 Senior Software Engineer, Tesla
- 2023-present Software Engineer, Main Street Autonomy
I contribute mostly to articles related to computing, robotics, geometry, and various niche topics, although I sometimes contribute photos to other articles. Please feel free to add things to the articles listed below or post any questions to my talk page.
Articles I've contributed significantly to
- Biham-Middleton-Levine traffic model (created)
- Swinging Atwood's Machine (greatly expanded)
- Monte Carlo localization (rewritten)
- Point set registration (created)
- Visibility polygon (expanded)
- Phipps Conservatory and Botanical Gardens (expanded)
=Smaller articles I've contributed to=
- Tair (lens) (created)
Featured Pictures
=Pittsburgh=
=Organic Molecules Render=
File:Glass ochem dof2.png and VRay.]]
=BML Traffic Model=
{{main|User:dllu/BML}}
| File:Biham-Middleton-Levine traffic model self-organized to a globally jammed phase.ogv
|File:Biham-Middleton-Levine traffic model self-organized to a free flowing phase.ogv |
| File:Biham-Middleton-Levine traffic model self-organized to a periodic intermediate phase.ogv
|File:Biham-Middleton-Levine traffic model self-organized to a disordered intermediate phase.ogv |
=Maze generation=
{{main|User:dllu/Maze}}
| File:MAZE 30x20 DFS.ogv |
Arbitrary selection of other diagrams I've made
=Coherent point drift=
These were made with the reference implementation of coherent point drift by Myronenko and Song.
| File:cpd fish affine.gif without noise.]]
|File:cpd fish rigid.gif with noise.]] |File:cpd fish nonrigid.gif with noise.]] |
=Orbits of the Swinging Atwood's Machine=
| File:Sam type A.svg.]] |
The following family of diagrams are generated by my C++ code, which can be found at [https://gist.github.com/dllu/7076698].
| File:Sam mu 3.000000 r0 500.000000 t0 1.570796 dr0 0.000000 dt0 0.000000.svg
|File:Sam mu 5.000000 r0 500.000000 t0 1.570796 dr0 0.000000 dt0 0.000000.svg |
| File:Sam mu 16.000000 r0 500.000000 t0 1.570796 dr0 0.000000 dt0 0.000000.svg
|File:Sam mu 20.000000 r0 500.000000 t0 1.570796 dr0 0.000000 dt0 0.000000.svg |
=Monte Carlo localization=
| File:Corridorbot door.png |
A robot using Monte Carlo localization to determine its position in a one-dimensional circular corridor containing three doors, using only a sensor that detects whether or not there is a door. The vertical grey bars at the bottom are the locations of the particles which represent the robot's current belief of its position. More particles clustered together means the robot is more likely to be there.
The following family of diagrams are generated by my C++ code, which can be found at [https://gist.github.com/dllu/7076603].
| File:Mcl t 0 1.svg |
| File:Mcl t 1 1.svg |
| File:Mcl t 2 1.svg |
Photography
=Current gear=
==Camera==
- Alkeria Necta N4K2-7C
- Fujifilm GFX100S
File:128 Balconies of 1390 Market Street, San Francisco.jpg|1390 Market Street, San Francisco, CA
File:1963 Airstream trailer in Joshua Tree dllu.jpg|Airstream trailer, Joshua Tree, CA
File:Aerial view of Apple Park dllu.jpg|Apple Park, Cupertino, CA
File:Aerial view of Golden Gate Bridge from the south dllu.jpg|Golden Gate Bridge, San Francisco, CA
File:Centerm at night as seen from Canada Place.jpg|Centerm, Vancouver, BC
File:Crosswalk of Market at Third, San Francisco.jpg|Market at Third, San Francisco, CA
File:Downtown Pittsburgh from Duquesne Incline in the morning.jpg|Duquesne Incline, Pittsburgh, PA
File:Ferry Building at night.jpg|Ferry Building, San Francisco, CA
File:Florence Cathedral seen from Piazzale Michelangelo night dllu.jpg
File:Golden Gate Bridge and San Francisco skyline from Hawk Hill at Blue Hour dllu.jpg|Golden Gate Bridge, San Francisco, CA
File:Heinz Memorial Chapel, interior.jpg|Heinz Memorial Chapel, Pittsburgh, PA
File:High rise view of Capitol Hill at night, looking east from Pine and 9th.jpg|Capitol Hill, Seattle, WA
File:Hillman Library, exterior (brighter).jpg|Hillman Library, Pittsburgh, PA
File:Phipps Conservatory winter 2015 Broderie Room.jpg|Phipps Conservatory, Pittsburgh, PA
File:Pittsburgh skyline panorama at night.jpg|Pittsburgh, PA
File:Pittsburgh skyline panorama daytime.jpg|Pittsburgh, PA
File:Recology Lodal Garbage Truck 14425 in San Francisco.jpg|Garbage Truck, San Francisco, CA
File:Remote view of Jintai Temple dllu.jpg|Jintai Temple, Zhuhai, China
File:San Francisco Bay Bridge Western Span at night.jpg|Bay Bridge, San Francisco, CA
File:San Francisco City Hall as seen from 100 Van Ness at dusk (wide).jpg|City Hall, San Francisco, CA
File:San Francisco City Hall, nighttime, September 2016.jpg|City Hall, San Francisco, CA
File:South face of the Transamerica Pyramid, 2017.jpg|Transamerica Pyramid, San Francisco, CA
File:Union Square, San Francisco December 2016.jpg|Union Square, San Francisco, CA
File:Zhuhai Fisher Girl statue dllu.jpg|Fisher Girl, Zhuhai, China