Christie Digital Systems Usa, Inc.

Matthew Post

Peter Anthony Van Eerd

Christian Scharfenberger

Mark Lamm

Hicham Sekkati

Jason Deglint

Anda Achimescu

Huck Kim

A method is provided of parallel gathering of structured light patterns in multi-projector systems, comprising sequentially projecting images from each of a plurality of projectors on a surface; capturing the sequentially projected images on the surface via at least one sensing device; creating one or more sensing device/projector masks for limiting the images projected by each of the plurality of projectors to portions that do not conflict with images projected by other ones of the plurality of projectors; using the one or more projector masks to create a graph of projectors whose projections conflict; and creating from the graph a plurality of gather groups wherein projectors within a group do not conflict with each other for simultaneously gathering structured light patterns from projectors in each of the gather groups.

Method of image gathering in multi-projector systems

A method of calibrating a display system, the method comprising: displaying a test pattern including a plurality of blobs; detecting one or more base blobs in the displayed test pattern; identifying, based on the detected base blobs, patches of the test pattern, wherein each patch comprises one of the base blobs and a subset of additional blobs detected in the displayed test pattern; determining a patch location for at least one patch within the test pattern based on the subset of the additional blobs in the patch to determine a blob location for at least one detected blob; determining a calibration parameter for the display system based on the blob location and a detected attribute of the at least one detected blob; and calibrating the projector using the calibration parameter.

Systems and methods for calibrating display systems

A device, system and method for photometric compensation of images provided by a display device. A display device is controlled to provide colors, the display device configured to provide images according to the colors of the display device. A camera acquires respective images of the colors provided by the display device. A per-pixel correction function for modifying image data used by the display device to provide the images is determined based on: the respective images of each of the colors acquired by the camera corrected into the HVS model using a predetermined color-relationship between the camera and a Human Visual System (HVS) model for the colors of the display device. The display device is controlled to provide the images using the image data as corrected using the per-pixel correction function.

Device, system and method for photometric compensation of images provided by a display device

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.

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Brampton, Canada

Matthew Post