Abstract: A projection system for projecting an image with an increased apparent resolution is provided. The projection system includes one or more projectors, a resampler module and a deconvolution module. The resampler module is configured to upsample an incoming high-resolution signal, perform an integer shift operation on a signal, and downsample to two or more low-resolution signals. The deconvolution module is configured to filter the upsampled high-resolution signal using a spatial domain deconvolution operation, the spatial domain deconvolution operation approximating frequency domain optical corrections based on characteristics of the one or more projectors. Preferably, the spatial domain deconvolution operation uses an N×N spatial kernel extracted from a spatial domain approximation of a Wiener filter.

Abstract: A system, method and computer readable medium for projecting images on a marked surface. The system includes a memory storage unit, a projector, a camera, an input device for receiving input data to align correspondence points in a template image with features on a marked surface, a computing device for calculating a correction model, and a rendering device for generating image data. The method involves projecting a template image to generate a camera image, receiving input data, calculating a correction model based on the input data and generating and projecting image data. The computer readable medium is encoded with codes to direct a processor to carry out the method.

Abstract: A method, system, and a computer readable medium for screen correction is provided. The system includes a memory storage unit for storing model content, a screen having screen parameters, an input device for receiving the screen parameters, a correction engine, and a projector. The method involves storing model content on a memory storage unit, receiving screen parameters, generating screen content, and projection at least a portion of the screen content onto the screen. The computer readable medium encoded with codes for directing a processor to carry out the method.

Abstract: A forward-on-forward high dynamic range architecture for digital micromirror devices device is provided. In particular, provided herein is a device that includes two digital micromirror devices (DMDs), each operated in a forward configuration, such that each is illuminated at a respective non-normal angle and a respective output image is reflected at a normal angle, a subject plane of a first DMD being parallel to the first DMD. Optics between the DMDs are configured to convey light reflected from the first DMD to illuminate an image plane at a second DMD in the forward configuration, the optics including an equivalent lens plane. At least one optical device between the DMDs is configured to: tilt the subject plane of the first DMD to an equivalent tilted subject plane, the equivalent lens plane, the equivalent tilted subject plane and the image plane all intersecting at a Scheimpflug intersection.

Abstract: A multispectral medical imaging device includes illumination devices arranged to illuminate target tissue. The illumination devices emit light of different near-infrared wavelength bands. The device further includes an objective lens, a near-infrared image sensor positioned to capture image frames reflected from the target tissue, and a visible-light image sensor positioned to capture image frames reflected from the target tissue. A processor is configured to modulate near-infrared light output of the plurality of illumination devices to illuminate the target tissue. The processor is further configured to determine reflectance intensities from the image frames captured by the near-infrared image sensor and to generate a dynamic tissue oxygen saturation map of the target tissue using the reflectance intensities. The device further includes an output device connected to the processor for displaying the dynamic tissue oxygen saturation map.

Abstract: According to the present specification there is provided a rotatable heat sink device which comprises a heat sink configured to enclose a cooling fluid, and the heat sink is rotatable about a rotational axis. The heat sink, in turn, comprises a first portion configured to receive thermal energy from a source external to the heat sink, and a second portion configured to dissipate at least a portion of the thermal energy to surroundings external to the device. The device further comprises an optical wavelength conversion material disposed on an outside surface of the first portion of the heat sink, and an agitator disposed inside the heat sink. The agitator is rotationally independent of the heat sink and is configured to promote circulation of the cooling fluid between the first portion and the second portion.

Abstract: A system and method for aligning stacked projectors is provided. A computing device is in communication with at least two projectors, configured to project images stacked onto each other, and at least one sensor configured to acquire respective images the projector images. Respective initial positions in a common space are determined of each of the projector images, from the sensor images, as well as a virtual projector image located at a common target position. Respective transforms for each of the projector images to one or more of shift and transform the projector images to the common target position of the virtual projector image. The respective transforms are applied to further first projector images to produce respective transformed projector images. The projectors are controlled to project the respective transformed projector images according to the common target position.

Abstract: A dual light source enhanced integration system is provided. The system comprises: a first light source and a second light source with overlapping spectra; a light integrator configured to integrate light and having a first light entrance face and a second light entrance face; and, a beamsplitter system configured to about equally distribute light from each of the first light source and the second light source to each of the first light entrance face and the second light entrance face, such that the light from each of the first light source and the second light source is about equally combined at each of the first light entrance face and the second light entrance face.

Abstract: A system and method for advanced lens geometry fitting is provided for projecting images using a projector with a non-planar lens. An initial estimate of intrinsic parameters of the projector can be determined, for example from a list; an initial estimate of extrinsic parameters of the projector can be determined based on the initial estimate of intrinsic parameters. The intrinsic parameters and extrinsic parameters can be optimized together by starting with a simple lens model and iteratively adding nonlinear terms, an error function evaluated at each iteration, for example for each set of intrinsic parameters in the list and the corresponding extrinsic parameters. As the values of the error function converges the optimized intrinsic parameters and the optimized extrinsic parameters can be used to generate images that are projected by the projector.

Abstract: A system and method for displaying layered images is provided. A rear display element displays a first image including a background. A transmissive display element displays a third image and a fourth image, the third image being displayed contemporaneously with the first image. The transmissive display element has a front surface and a rear surface. The rear surface is placed a predetermined distance from the rear display element such that images displayed by the rear display element and by the transmissive display element can be viewable through the front surface of the transmissive display element. A lighting element provides backlight illumination to the transmissive display element contemporaneously with the fourth image. The lighting element can provide the backlight illumination by having the system display a second image at the rear display element for transmitting a backlight illumination from the rear display element contemporaneously with the fourth image.

Abstract: A projection system is provided that uses an additional light valve in series with at least one color sub-assembly and respective light valve in order to increase the contrast of a projected image, wherein bit sequences are generated for the additional light valve that do not result in interference with the respective light valve bit sequences.

Abstract: A device, system and method for content-adaptive resolution-enhancement is provided. A plurality of subframe streams are generated from a video stream, each of the plurality of subframe streams comprising a lower resolution version of the video stream, pixel-shifted from one another. A plurality of output subframe streams are generated from the plurality of subframe streams in a one-to-one relationship by: applying a plurality of video enhancement filters to each of the plurality of subframe streams, each of the plurality of video enhancement filters for enhancing different features of the video stream; and, combining one or more resulting enhanced subframe streams into a respective output subframe stream based on data in one or more regions of the video stream. One or more projectors are controlled to project the plurality of output subframe streams to combine the plurality of output subframe streams into a higher resolution projected video stream.

Abstract: A reduced blur, low flicker display system is provided, comprising: a display device comprising an array of pixel devices, each configured to be driven to a given output intensity value by changing each of the pixel devices between at least two intensity values within an image frame, including: a first intensity value and a second intensity value, higher than the first intensity value; and, a computing device configured to: spatially drive the pixel devices, according to image frames of image data, on a pixel-by-pixel basis and independent of one another, to respective output intensity values, according to at least two different spatio-temporal driving modes within a same image frame, a first set of the pixel devices driven according to a first spatio-temporal driving mode, and a second set of the pixel devices driven according to a second spatio-temporal driving mode, each within the same image frame.

Abstract: A wavelength conversion material array is provided, including a system comprising: a light source configured to emit excitation light at an excitation wavelength; a heatsink; a wavelength conversion material located on the heatsink, the wavelength conversion material comprising a relative wavelength conversion area of unity divided into an array of spots, a number of the spots in a range of 4 to 12, the wavelength conversion material configured to emit light at a wavelength greater than the excitation wavelength when irradiated by the excitation light; and, an array of lenslets configured to: receive the excitation light from the light source and irradiate each of the spots of the wavelength conversion material with the excitation light, the lenslets in a one-to-one relationship with the number of spots; and collect the light emitted by the wavelength conversion material.

Abstract: A projection mapping video pipeline is provided including a system comprising: a lookup table generator; a memory and a communication interface, the memory storing: a three-dimensional (“3D”) model of a physical object; and a mapping of the 3D model onto unwrapped two-dimensional (“2D”) surfaces of the 3D model; the lookup table generator configured to: receive projector data defining a location, an orientation and lens characteristics associated with a given projector, relative to the physical object; generate a lookup table from the 3D model, the mapping and the projector data, the lookup table comprising a respective mapping of projector pixels to the unwrapped 2D surfaces of the 3D model, respective to the given projector; and, transmit, using the communication interface, the lookup table to a given control device in communication with the given projector.

Abstract: A system and method for online projector-camera calibration from one or more images is provided. The system comprises: a projector, a camera, and a calibration device configured to: determine a map between pixels of each of a projector image and a camera image in fewer than one hundred percent of pixels of the projector image using feature extraction; determine an initial estimate of a fundamental matrix from the map; determine an initial guess of intrinsic properties of the projector and camera using one or more closed-form solutions; iteratively determine an error-function based on the map using the fundamental matrix while adding constraints on the intrinsic properties using the one or more closed-form solutions, and the initial estimate and guess as initial input; and, when the error-function reaches an acceptance value, determine intrinsic and extrinsic properties of the projector and the camera from current values of iterative estimates.

Abstract: A light emitting device with a heat sink composed of two materials is provided. The device comprises: a light emitting material; and, a heat sink comprising: a first material configured to cool the light emitting material, the first material comprising a first coefficient of thermal expansion (CTE); and, a second material bonded to the first material at an interface there between, the second material comprising a second CTE lower than the first CTE, the light emitting material bonded to the first material but not the second material.

Abstract: A dual retention apparatus comprises: a locking pin; a pin retaining device, the pin slidable therein, comprising: a starting pin position; a pin locking mechanism; a partial pin locking mechanism; a pin path from the starting pin position to the pin locking mechanism, the partial pin locking mechanism located on the pin path and configured to prevent the pin from sliding back towards the starting pin position and allowing the pin to slide towards the pin locking mechanism, the pin locking mechanism configured to lock the pin therein; and a pin return path from the pin locking mechanism to the starting position, the pin return path bypassing the partial pin locking mechanism; and, a biasing device configured to relatively bias the pin along at least a portion of the pin path towards the pin locking mechanism, and further bias the pin into the pin locking mechanism.

Abstract: A system including a rotationally static light emitting material with rotating optics is provided. The system comprises: the material on a heatsink being circularly symmetrical around an axis, and rotationally fixed; a stationary light source configured to generate excitation light, the excitation light configured to excite the material producing emitted light, an incoming path of the excitation light forming a first angle, with the axis greater than 0° and less than 90°; and, optics, configured to rotate relative to the material around the axis, comprising: a first mirror on the axis and forming a second angle with the axis greater than 0° and less than 90°, the first mirror located on the incoming path; and a second mirror parallel to the first mirror, the first mirror configured to reflect the excitation light towards the second mirror, and the second mirror configured to reflect the excitation light towards the material.

Abstract: An imaging apparatus for two-stage light modulation in high-definition digital projection or cinema can include two light modulators. Each light modulator can include a multi-chip imaging system coupled to a total internal reflection prism (TIR) system, which has a light input face and an on-state face. Relay optics can be positioned between the two light modulators. The relay optics can be configured to defocus light received from the pre-modulator and to provide defocused light to the prime modulator using a substantially Gaussian pixel shaping function. The prime modulator can be oriented to receive defocused light from the relay optics at the light input face of its TIR prism system. The pre-modulator can be oriented backwards, so as to receive source light at the on-state face of its TIR prism system and to output pre-modulated light to the relay optics via the light input face of the TIR prism system.