Real-Time 3D Color Imaging with Single-Photon Lidar Data
Résumé
Single-photon lidar devices can acquire 3D data at very long
range with high precision. Moreover, recent advances in lidar
arrays have enabled acquisitions at very high frame rates.
However, these devices place a severe bottleneck on the reconstruction
algorithms, which have to handle very large volumes
of noisy data. Recently, real-time 3D reconstruction
of distributed surfaces has been demonstrated obtaining information
at one wavelength. Here, we propose a new algorithm
that achieves color 3D reconstruction without increasing
the execution time nor the acquisition process of the realtime
single-wavelength reconstruction system. The algorithm
uses a coded aperture that compresses the data by considering
a subset of the wavelengths per pixel. The reconstruction
algorithm is based on a plug-and-play denoising framework,
which benefits from off-the-shelf point cloud and image denoisers.
Experiments using real lidar data show the competitivity
of the proposed method.