Ruixiang Cao

Ruixiang Cao

#3D Reconstruction #3D Printing #Embodied AI #Building a Startup #ShanghaiTech #Kyoto University

BEng, ShanghaiTech University. MEng, Kyoto University. Founder of Sparsee Tech, working on AI-based 3D reconstruction and full-color 3D printing.

Education

Activities 4
  • MiraclePlus Spring 2026
  • Shenzhen Institute of Innovation Summer Camp Summer 2023
  • DJI RoboMaster High-School Summer Camp Summer 2018
  • DJI RoboMaster High-School Summer Camp Summer 2017
Research 4

VecNav: Vector Goal Robot Navigation from In-the-wild Videos

IEEE/RSJ IROS 2025 · First Author

Trains a monocular navigation model via self-supervision from uncalibrated, human-captured videos, yielding a generalist policy that guides various robots in unfamiliar environments.

DreamPrinting: Volumetric Printing Primitives for High-Fidelity 3D Printing

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ACM SIGGRAPH 2025 · Best Paper Award · Co-first Author

Transforms radiance-based volumetric representations (e.g. NeRF) into physically fabricable Volumetric Printing Primitives for high-fidelity full-color 3D printing. Recipient of a SIGGRAPH 2025 Best Paper Award.

Poxel: Voxel Reconstruction for 3D Printing

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Kyoto University, Learning Machines · First Author

A Printable-Voxel framework that removes view-dependency and maps digital RGB into a physical CMYKWCl color space, directly outputting full-color voxel grids for photopolymer-jetting 3D printing.

OmniWheg: An Omnidirectional Wheel-Leg Transformable Robot

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IEEE IROS 2022 · First Author

Published at IROS, a top-tier robotics conference. Proposes an omnidirectional wheel-leg dual-mode transformable mechanism.

Patents 6

Full-Color 3D Printing Method, Device, Medium and Product

Invention Publication CN122034329A · Sparsee Technology (Shanghai)

Motion Pose Detection Method, Apparatus, Computer Device and Medium

Invention Publication CN118356184A · Deemos Corporation

Mandibular Motion Pose Detection Device

Utility Model Granted CN219516283U · Deemos Corporation

Data Acquisition System Based on 3D Lighting

Invention Publication CN115379104A · ShanghaiTech University

Data Acquisition System for 3D Reconstruction

Utility Model Granted CN215679031U · ShanghaiTech University

Portable Drip-Infusion Laser Detector

Utility Model Granted CN210583276U · Yiwei Wang / Ruixiang Cao / Wentao Zhu

Projects 4

Filament LED Wall

Club Project · Real-time Video Light Wall · Jetson + Arduino

A wall of filament LEDs driven by Jetson Xavier NX and Arduino, rendering a live camera feed as a warm-toned light display.

Music with Stepper Motors

Club Project · Stepper Motors Playing MIDI · Arduino

Parses MIDI with Python’s mido and drives stepper motors over serial so the motors “sing” by pitch and rhythm.

“The Last” — Unity Game

Course Project · Post-apocalyptic Survival Shooter · Unity

A self-made post-apocalyptic survival shooter with a building system, environment interaction, inventory, and original sound effects.

Dome Light-Field 3D Capture System

Archive

Lab Project · ShanghaiTech MARS Lab

Led, as the core student lead, the build of a spherical dome light-field 3D capture rig for facial geometry and material capture.

Press 14

Surfing Founders: Sealing the World in Resin — In Conversation with Ruixiang Cao

Archive

After Graduation In-depth Founder Interview

A long-form founder interview tracing the path from light-field reconstruction to full-color UV 3D printing — turning a moment into a permanent memory.

ShanghaiTech: SIST Wins an ACM SIGGRAPH Best Paper Award

Archive

After Graduation Author of the DreamPrinting Paper

Official news from SIST: the DreamPrinting full-color volumetric 3D-printing paper, co-authored by Ruixiang Cao, won a SIGGRAPH Best Paper Award.

Shanghai Observer: One Year of the Zhangjiang Mo-Li Community

Archive

After Graduation Mentions Ruixiang Cao & Sparsee

Shanghai Observer: Zhangjiang Sets Off Again at 33

Archive

After Graduation Sparsee’s Transparent-Cube Keepsake

On Zhangjiang’s innovation ecosystem, featuring Sparsee’s end-to-end full-color 3D scan-and-print service and its transparent-cube keepsakes.

The Paper: AI Implementation, the “Pudong Way”

Archive

After Graduation Featuring Founder Ruixiang Cao

A tour of Pudong’s “Mo-Li Community” AI hub, quoting Ruixiang Cao on Sparsee’s vision of a new era of 3D memory.

IFNews: AI Implementation, the “Pudong Way”

Archive

After Graduation Founder Interview

Official interview at the Pudong AI industry exhibition on the full-color 3D scan-and-print business.

Labour Daily: ShanghaiTech’s Dome Light-Field Undergraduate Team

Archive

Undergraduate Five Undergraduates Built the Dome Rig

Press-association coverage of ShanghaiTech: Ruixiang Cao and four fellow undergraduates built a dome light-field system for facial geometry and material capture at the MARS studio.

ShanghaiTech: Making Things in My College

Archive

Undergraduate Founder of Sandbox Studio

Official college feature: Ruixiang Cao recounts founding the “Sandbox Studio” and leading the design and fabrication of campus memorabilia such as the Mass Tower model, etched rulers, and SIST badges.

ShanghaiTech SIST: A Student Team Builds the Dome Light Stage

Archive

Undergraduate Core Student Lead, Dome Light Stage

Official SIST feature: Ruixiang Cao and four fellow undergraduates built a spherical dome light stage with ~150 controllable LED sources at the MARS lab for facial geometry and material capture.

SJTU High School (Jiading): SMASHING Team Wins “F1 in Schools” Best Design

Archive

High School Grade 11 · Team Engineer

SJTU High School (Jiading): 2016 Sci-Tech Achievements Review

Archive

High School Multiple Competition Awards

SJTU High School (Jiading): 1st Prize at the 2nd Shanghai Maker Star Contest

Archive

High School 1st Prize, 3D Creative Design

SJTU High School (Jiading): Top Prize at Tongji Structural Design Invitational

Archive

High School Special Prize, Mechanical & Energy Engineering

SJTU High School (Jiading): Honored in the “Tomorrow’s Sci-Tech Star” Selection

Archive

High School District “Future Sci-Tech Star”