Abstract: In one embodiment, a first device may receive, from a second device, a reference landmark map identifying locations of facial features of a user of the second device depicted in a reference image and a feature map, generated based on the reference image, representing an identity of the user. The first device may receive, from the second device, a current compressed landmark map based on a current image of the user and decompress the current compressed landmark map to generate a current landmark map. The first device may update the feature map based on a motion field generated using the reference landmark map and the current landmark map. The first device may generate scaling factors based on a normalization facial mask of pre-determined facial features of the user. The first device may generate an output image of the user by decoding the updated feature map using the scaling factors.

Abstract: In one embodiment, an apparatus includes a photoluminescent wavelength-shifting material configured to receive an input-light data signal comprising a first range of wavelengths, absorb at least a portion of the received input-light data signal, and produce an emitted-light data signal comprising a second range of wavelengths based on an upper-state lifetime of the photoluminescent wavelength-shifting material. The apparatus also includes a focusing element configured to receive at least a portion of the emitted-light data signal, concentrate the received portion of the emitted-light data signal, and produce a concentrated-light data signal. The apparatus further includes a photodetector configured to receive the concentrated-light data signal, and produce an electrical current corresponding to the concentrated-light data signal.

Abstract: In one embodiment, an apparatus includes a photoluminescent wavelength-shifting material configured to receive an input-light data signal comprising a first range of wavelengths, absorb at least a portion of the received input-light data signal, and produce an emitted-light data signal comprising a second range of wavelengths based on an upper-state lifetime of the photoluminescent wavelength-shifting material. The apparatus also includes a focusing element configured to receive at least a portion of the emitted-light data signal, concentrate the received portion of the emitted-light data signal, and produce a concentrated-light data signal. The apparatus further includes a photodetector configured to receive the concentrated-light data signal, and produce an electrical current corresponding to the concentrated-light data signal.

Abstract: In one embodiment, an apparatus includes a wavelength-shifting element configured to receive an input-light signal. The wavelength-shifting element includes a wavelength-shifting material configured to absorb at least a portion of the received input-light signal and produce an emitted-light signal from the absorbed portion of the received input-light signal. The apparatus also includes a plasmonic grating comprising a plurality of plasmonic-grating elements configured to receive at least a portion of the emitted-light signal and direct the received portion of the emitted-light signal onto a photodetector. The apparatus further includes the photodetector configured to receive the directed portion of the emitted-light signal and produce an electrical current corresponding to the directed portion of the emitted-light signal.

Abstract: In one embodiment, an apparatus includes a wavelength-shifting element configured to receive an input-light signal. The wavelength-shifting element includes a wavelength-shifting material configured to absorb at least a portion of the received input-light signal and produce an emitted-light signal from the absorbed portion of the received input-light signal. The apparatus also includes a plasmonic grating comprising a plurality of plasmonic-grating elements configured to receive at least a portion of the emitted-light signal and direct the received portion of the emitted-light signal onto a photodetector. The apparatus further includes the photodetector configured to receive the directed portion of the emitted-light signal and produce an electrical current corresponding to the directed portion of the emitted-light signal.

Abstract: In one embodiment, an apparatus includes a wavelength-shifting element configured to receive an input-light signal. The wavelength-shifting element includes a wavelength-shifting material configured to absorb at least a portion of the received input-light signal and produce an emitted-light signal from the absorbed portion of the received input-light signal. The apparatus also includes an optical-concentrating element configured to receive at least a portion of the emitted-light signal and concentrate the received portion of the emitted-light signal onto a photodetector. The apparatus further includes the photodetector configured to receive the concentrated portion of the emitted-light signal and produce an electrical current corresponding to the concentrated portion of the emitted-light signal.