Abstract: Introduced here are light sources for flash photography configured to produce high-fidelity white light that is tunable over a broader range of correlated color temperatures (CCTs) than conventional flash technologies. The light source can include multiple independently controllable color channels representing illuminants (e.g., light-emitting diodes) of different colors with varying degrees of saturation. Operating collectively, the multiple color channels can produce a high spectral quality white light corresponding to different CCTs (e.g., “warm” white light having a red hue, “cool” white light having a blue hue). Operating independently, these same color channels can be pre-flashed in a variety of prescribed sequences to probe the spectral characteristics of a scene, thereby allowing for an enhanced, spectrally matched white flash as well as collecting per-pixel reflectivity data that can be later used in during post processing of the captured image.

Abstract: Introduced here are computer programs and associated computer-implemented techniques for determining reflectance of an image on a per-pixel basis. More specifically, a characterization module can initially acquire a first data set generated by a multi-channel light source and a second data set generated by a multi-channel image sensor. The first data set may specify the illuminance of each color channel of the multi-channel light source (which is configured to produce a flash), while the second data set may specify the response of each sensor channel of the multi-channel image sensor (which is configured to capture an image in conjunction with the flash). Thus, the characterization module may determine reflectance based on illuminance and sensor response. The characterization module may also be configured to determine illuminance based on reflectance and sensor response, or determine sensor response based on illuminance and reflectance.

Abstract: Introduced here are computer programs and associated computer-implemented techniques for determining reflectance of an image on a per-pixel basis. More specifically, a characterization module can initially acquire a first data set generated by a multi-channel light source and a second data set generated by a multi-channel image sensor. The first data set may specify the illuminance of each color channel of the multi-channel light source (which is configured to produce a flash), while the second data set may specify the response of each sensor channel of the multi-channel image sensor (which is configured to capture an image in conjunction with the flash). Thus, the characterization module may determine reflectance based on illuminance and sensor response. The characterization module may also be configured to determine illuminance based on reflectance and sensor response, or determine sensor response based on illuminance and reflectance.

Abstract: Introduced here are light sources for flash photography configured to produce high-fidelity white light that is tunable over a broader range of correlated color temperatures (CCTs) than conventional flash technologies. The light source can include multiple independently controllable color channels representing illuminants (e.g., light-emitting diodes) of different colors with varying degrees of saturation. Operating collectively, the multiple color channels can produce a high spectral quality white light corresponding to different CCTs (e.g., “warm” white light having a red hue, “cool” white light having a blue hue). Operating independently, these same color channels can be pre-flashed in a variety of prescribed sequences to probe the spectral characteristics of a scene, thereby allowing for an enhanced, spectrally matched white flash as well as collecting per-pixel reflectivity data that can be later used in during post processing of the captured image.

Abstract: A reusable pizza container configured to enclose a hot pizza for temporary storage or transport and to prevent moisture from entering into the top, bottom or side surfaces of the pizza. The container has a lid, a removable Vapor Transport Mechanism, and a bottom. The lid facilitates convection heat flow and the flow of moisture along the interior sides of the lid. Raised radial ribs enable the lids to be stacked. The raised radial ribs in the lid have perforations to allow hot vapor to escape and minimize moisture within the enclosed area. The lid nests securely into the bottom to prevent dislodging of moisture during transport. The removable Vapor Transport Mechanism (VTM), a micromesh membrane that fits within the lid, allows vapor to pass upwards through the membrane but prevents moisture from dripping downwards onto the upper pizza surface.

Abstract: A reusable and stackable pizza pan set for holding, transporting, reheating and serving pizza. The set has a bottom, lid and removable Vapor Transport Mechansim. A domed lid facilitates convection heat flow and the flow of condensation. The lid has perforated radial raised ribs that allow heat escape and enables stacking. The lid nests securely into the bottom to prevent dislodging during transport. The bottom has raised circular domes to elevate the pizza above the surface. Raised radial raised ribs enable the bottoms to be stacked. A removable Vapor Transport Mechanism (VTM), a mesh screen that fits within the domed lid, collects and prevents excessive condensation from dripping onto pizza. The reusable pizza pan set retains pizza quality by keeping the pizza hot while reducing sogginess, thereby maintaining a fresh-from-the-oven, cardboard-free taste with a crispy crust.