SpiderCam: Low-Power Snapshot Depth from Differential Defocus
Not on the map. Why?
Abstract (arXiv)
We introduce SpiderCam, an FPGA-based snapshot depth-from-defocus camera which produces 480x400 sparse depth maps in real-time at 32.5 FPS over a working range of 52 cm while consuming 624 mW of power in total. SpiderCam comprises a custom camera that simultaneously captures two differently focused images of the same scene, processed with a SystemVerilog implementation of depth from differential defocus (DfDD) on a low-power FPGA. To achieve state-of-the-art power consumption, we present algorithmic improvements to DfDD that overcome challenges caused by low-power sensors, and design a memory-local implementation for streaming depth computation on a device that is too small to store even a single image pair. We report the first sub-Watt total power measurement for passive FPGA-based 3D cameras in the literature.
Key facts. Cited by 1 paper in the map (data through 14 Oct 2026). Builds on 7 of its 72 references that are in the map. First posted on arXiv 18 Mar 2026.
Builds on
7 of 72 references.
References · 7
- 2017A Survey of Structure from Motioncited by 158
- 2024AI and Memory Wallcited by 92
- 2020A Survey on Deep Learning Techniques for Stereo-based Depth Estimationcited by 90
- 2019Monocular Depth Estimation: A Surveycited by 38
- 2024OMNI-DC: Highly Robust Depth Completion with Multiresolution Depth Integrationcited by 30
- 2020An Overview of Depth Cameras and Range Scanners Based on Time-of-Flight Technologiescited by 20
- 2025Focal Split: Untethered Snapshot Depth from Differential Defocuscited by 3
Built on by
Citing papers per year: 2026: 1.
1 paper.