3 papers
cs.CV2026
Null-Space Diffusion Distillation Unlocks Speed, Fidelity and Realism in Lensless Imaging
Jose Reinaldo Cunha Santos A V Silva Neto, Hodaka Kawachi, Yasushi Yagi +1
Lensless imaging reconstructs scenes from highly multiplexed measurements, resulting in a severely ill-posed inverse problem. In this work, we identify a fundamental trade-off betw…
cs.CV2025
Towards Imperceptible Watermarking Via Environment Illumination for Consumer Cameras
Hodaka Kawachi, Tomoya Nakamura, Hiroaki Santo +4
This paper introduces a method for using LED-based environmental lighting to produce visually imperceptible watermarks for consumer cameras. Our approach optimizes an LED light sou…
cs.CV2025
Single-Image Depth from Defocus with Coded Aperture and Diffusion Posterior Sampling
Hodaka Kawachi, Jose Reinaldo Cunha Santos A. V. Silva Neto, Yasushi Yagi +2
We propose a single-snapshot depth-from-defocus (DFD) reconstruction method for coded-aperture imaging that replaces hand-crafted priors with a learned diffusion prior used purely…