PhD Defense: 'Single-Shot Fourier iToF Camera with On-Chip Multifrequency Demodulation in CMOS Technology'

This thesis presents a novel iToF camera that enables single-shot, on-chip multifrequency demodulation via periodic ultrashort-pulse illumination, combined with computationally efficient algorithms. By exploiting optimal Fourier-domain sensing patterns, the sensor captures the temporal response of a scene, which is typically sparse or compressible, while maintaining a practical trade-off in spatial resolution. The Fourier iToF camera was implemented using a standard 180 nm CMOS image sensor (CIS) technology and experimentally validated. The proposed sensing concept improves the accuracy and robustness of depth recovery by leveraging multifrequency measurements, enabling real-time, power-efficient 3D imaging with potential applications in robotics, the Internet of Things, autonomous systems, and beyond.

Supervisors:

• Paula López Martínez
• Miguel Heredia Conde