Christie Digital Systems Usa, Inc.

Imagine Communications Corp.

Hbc Solutions, Inc.

Harris Canada Systems, Inc.

Harris Corporation

Chad Faragher

Daniel Mance

Stanley Robert Moote

Colin Bartlett Yardley

Peter Anthony Van Eerd

Eliezer Azi Ben-Lavi

Ryan Thomas Morris

Andrew Douglas Dennison

Randy Spruyt

Heewoo Ahn

William F Van Rassell

Christopher John Gordon

Simon Thomson

A method of aligning a plurality of color channels of a projector is provided. The method includes: for each color channel, (i) projecting test pattern on a surface; (ii) capturing image of the test pattern generated on the surface; and (iii) adding the captured image to an image set. Once the captured images for each color channel are added to an image set, identifying a reference position based on the image set. This is followed by processing the image set to estimate a divergence of the respective test patterns for each color channel with respect to the reference position, followed by computing a corrective function for each color channel and applying the respective corrective function to each color channel to align the color channel to the reference position.

Method and device for aligning color channels

A method and apparatus are provided for calibrating projector alignment using detected image features projected onto a surface, the apparatus comprising a first processor detects features in a single frame of video and a second processor detects features in the corresponding projected image detected by a camera. The second processor matches features of interest in the selected video frame and captured image to correct the projector alignment. The images may be compared using blob detection or corner detection. Unlike prior art 'off-line' calibration methods, video frames can be processed continuously (e.g. every frame) or intermittently (e.g. every 10th frame) without interrupting the display of video content.

System and method for projector alignment using detected image features

A device, system and method for generating a mapping of projector pixels to camera pixels and/or object positions using alternating patterns is provided. A device controls a projector to project, while a camera acquires frames thereof, in a sequence: alternating patterns; and structured light patterns, the alternating patterns comprising first and second predetermined patterns projected before and/or after the structured light patterns. The device determines, using the frames as coordinated with the alternating patterns, one or more functions relating respective indices of the alternating patterns and the frames, on one or more of a camera pixel-by-pixel basis and a camera scan-line-by-scan-line basis. The device generates, and stores at a memory, a mapping of projector pixels to one or more of camera pixels and positions on an object in the overlapping fields-of-view, based on relating the frames with the structured light patterns using the one or more functions.

Device, system and method for generating a mapping of projector pixels to camera pixels and/or object positions using alternating patterns

A device, system and method for generating updated camera-projector correspondences from a reduced set of test patterns is provided. When a predetermined correspondences between projector points and camera points in an initial relative position of a projector and a camera have been previously determined, a recalibration therebetween may occur by projecting a single test pattern derived from the predetermined correspondences to estimate movement therebetween. When the movement is too great to be estimated by a single test pattern, another test pattern may be projected to determine an estimation function for the movement and in particular, estimate movement of one or more camera points in the projected images due to relative movement of the projector and the camera from the initial relative position to a current relative position.

Device, system and method for generating updated camera-projector correspondences from a reduced set of test patterns

A video multiviewer system may include a plurality of video scalers operating in parallel for generating initially scaled video streams by performing video scaling in at least one dimension on a plurality of video input streams. The video multiviewer system may also include a processing unit coupled downstream from the video scalers for generating additionally scaled video streams by performing additional video scaling on the initially scaled video streams, and a display cooperating with the processing unit for displaying multiple video windows based upon the additionally scaled video streams.

Video multiviewer system with distributed scaling and related methods

A video multiviewer system may include a video input/output (I/O) controller, a system memory, and a graphics processing unit (GPU) comprising a GPU memory. The system may further include a central processing unit (CPU) for operating the video I/O controller to transfer video data to the GPU memory via direct memory access (DMA) without being stored in the system memory, and a display for displaying multiple video windows based upon video data in the GPU memory.

Video multiviewer system providing direct video data transfer to graphics processing unit (GPU) memory and related methods

A video multiviewer system may include a plurality of video inputs and a multiviewer video processor coupled to the plurality of video inputs. The multiviewer video processor may include a central processing unit (CPU) and a graphics processing unit (GPU) cooperating therewith for generating video data based upon the plurality of video inputs and with added graphic content. The video multiviewer system may further include a display coupled to the multiviewer processor for displaying multiple video windows based upon the video data.

Video multiviewer system for generating video data based upon multiple video inputs with added graphic content and related methods

A video multiviewer system may include a plurality of video inputs and a multiviewer video processor coupled to the plurality of video inputs for generating video data based upon the plurality of video inputs. The system may further include a display coupled to the multiviewer video processor for displaying multiple video windows based upon the video data, and at least one user input device. The multiviewer video processor may permit scrolling among the multiple video windows displayed on the display at a given instant and at least one other video window not displayed on the display at the given instant based upon the at least one user input device.

Video multiviewer system permitting scrolling of multiple video windows and related methods

A video monitoring device may include an input for a video input signal, a display, and a video processor coupled to the input and the display. The video processor may be for obtaining from the video input signal at least one parametric signal defining a curve, calculating derivative values for the curve, and displaying pixel intensity values on the display based upon the derivative values so that more rapidly changing portions of the curve appear dimmer and more slowly changing portions of the curve appear brighter.

Video monitoring device providing parametric signal curve display features and related methods

The invention provides a system and method for processing a video stream having at least one video signal contained therein. The invention utilizes a computer, a video card connected to the computer and a frame processing card connected to the computer. The video card generates a digital video signal by inserting the video signal into the digital video signal. The digital video signal is transmitted from the video card to the frame processing card through a video output port of the video card. A video synchronization signal relating to the digital video signal is provided to the frame processing card. For the system and method, the frame processing card extracts the video signal from the digital video signal utilizing the video synchronization signal to maintain a frame rate for extracting the video signal.

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Kitchener, Canada

Chad Faragher