Seiko Epson Corporation

Other

Northrop Grumman Systems Corporation

Steve Nelson

Victor Ivashin

Chia-Hsin Li

Sean Miceli

Jamie C Rasmussen

Brian Chan

William Marvin Skones

Dirk Maarten Knotter

Wai Tung Yim

Ronald Boskovic

Theodore Douglas Huffmire

Georg Gogg

Charlene Reaux

A system for establishing a remote desktop connection between a client projector and a host computer, the client projector and the host computer being connected by a network. A private remote desktop service virtual channel is established between the host computer and the client projector. In the client projector, a processor initiates a remote desktop connection process, and completes a remote desktop connection to the host computer. The client projector receives keyboard and mouse events from the host computer across the private remote desktop service virtual channel. The keyboard or mouse events received by the client projector are injected into an operating system of the client projector. They are interpreted by a client application remote desktop connection as a valid input device event, and forwarded to the host computer to actuate a graphical user interface of a remote desktop session.

Method for remote desktop control by remote host input devices

Distributing meeting data from an interactive whiteboard projector to at least one computer of a meeting member, comprises: in the interactive whiteboard projector, using a processor to save meeting data, generate a password, display a screen with a URL of the projector and the password and use a web server to transfer the meeting data from the interactive whiteboard projector to the at least one computer.

Method for securely distributing meeting data from interactive whiteboard projector

Updated image views of an actively changing desktop, in a remote desktop session being shared by a Remote Desktop terminal server, are displayed on the host's logon screen. Specifically, a Microsoft Window's based computer (host), which is communicating with a network projector (client) through a remote desktop connection, provides continually updating image views of the desktop being hosted in a remote desktop session onto the host screen such that a user locally positioned near the host may preview the desktop content being provide to, and output by, the remote projector.

Method for host preview during a remote desktop session

A primary image is transformed into secondary images for projection, via first and second frame buffers and view projection matrixes. To do so, a first image is loaded into the first frame buffer. A calibration data set, including the view projection matrixes, is loaded into an application. The matrixes are operable to divide and transform a primary image into secondary images that can be projected in an overlapping manner onto a projection screen, providing a corrected reconstruction of the primary image. The first image is rendered from the first frame buffer into the second images, by using the application to apply the calibration data set. The second images are loaded into a second frame buffer, which can be coupled to the video projectors.

Method for multiple projector display using a GPU frame buffer

A computer (host), which is communicating with an interactive whiteboard projector (client) through a remote desktop connection, launches third-party applications supporting multiple mice (i.e. drawing pens) and provides these applications with virtual mouse device and input event signals for each pen device connected on the projector. The applications will behave as if the host system were configured with multiple installed mice, though no added driver or physical connected hardware is present.

Method for providing multiple mouse inputs in a remote desktop session

Methods having corresponding apparatus and tangible computer-readable media comprise: capturing a first image of ambient light upon a surface; generating a first grayscale image based on a selected color channel of the first image; projecting a primary color of light upon the surface; capturing a second image of the primary color of light projected upon the surface; generating a second grayscale image based on the selected color channel of the second image; generating a difference image, comprising subtracting the first grayscale image from the second grayscale image; and generating a projector mask, comprising detecting edges of a shape in the difference image, and reproducing the shape based upon the edges of the shape.

Projector masks for calibrating projector-based display systems

A multi projector imaging system is provided. The system includes a plurality of projectors and a computing device in communication with the plurality of projectors. The computing device includes a projector platform module providing output to the plurality of projectors such that the plurality of projectors display partially overlapping output as a cohesive display. The projector platform module includes a projection player module having media drawers for preparing frames of data that are drawn into a frame buffer for eventual display through the plurality of projectors. The projection platform also includes a remote desktop controller. The remote desktop controller manages remote computing devices communicating with the projector platform, wherein the remote desktop controller specifies a resolution and aspect ratio for image data provided by the remote computing devices, and wherein the provided image data is stored in the frame buffer. A method for displaying content through the multi-projector system is also included.

System and method for displaying remote content through multiple projectors

Computer-readable media, having corresponding methods and apparatus, embodies instructions executable by a first computer to perform a method comprising: executing a first videoconference client application, wherein the first videoconference client application exchanges first audiovisual data with a videoconference server application during a videoconference; sending action commands to a second videoconference client application executing on a second computer, wherein the second videoconference client application exchanges second audiovisual data with the videoconference server application during the videoconference; and wherein the second videoconference client application operates according to the action commands during the videoconference.

Remote control of videoconference clients

Methods having corresponding apparatus and computer-readable media comprise: capturing an image of a shape projected upon a display surface; and determining a first rectangle that is the largest inscribed rectangle for the shape, comprising generating a rectangular bounding box containing the shape, dividing the rectangular bounding box vertically into first and second sections, determining a second rectangle that is the largest inscribed rectangle for the shape in the first section of the bounding box, determining a third rectangle that is the largest inscribed rectangle for the shape in the second section of the bounding box, dividing the rectangular bounding box horizontally into third and fourth sections, determining a fourth rectangle that is the largest inscribed rectangle for the shape in a third section of the bounding box, and determining a fifth rectangle that is the largest inscribed rectangle for the shape in the fourth section of the bounding box.

Display masks for display and calibration in projector-based display systems

A method for correcting a projection from a plurality of digital projectors is provided. The method includes receiving as an input a matrix which maps each pixel to be projected to a captured pixel that includes a row value and a column value and detecting a shift with respect row or column values in the matrix. The method further includes determining attributes of the shift, wherein the attributes include a type for the shift and an overlap length for the shift. A gradient length is determined from the overlap length. A gradient of pixel weightings is generated for each gradient length. The pixel weightings are uniformly sloping and are associated with pixels in the gradient length and neighboring pixels. Intersecting gradients re merged and a list that includes common points and diagonal points is created from the merging process. The method operations may be embodied as code on a computer readable storage medium.

Correcting row and column shifts in a calibration matrix for a projection system

A first Gray code technique and a second raster calibration technique can be combined to create a precise mapping between pixel locations of the camera and pixel locations of the projector(s). In one aspect the technique of using the raster calibration images is eliminated by interpolating the projector coordinate information decoded from the Gray code images. In another aspect camera images are processed to reduce errors caused by noise so that text can be displayed without any noticeable misalignment between projectors. In a third aspect, a scale factor is calculated based on the relative height/width of projector regions in the captured calibration images. Calibration images are recalculated using the scale factor to provide greater correspondence between the mapping of a low resolution camera to the high-resolution projectors.

Multi-projector display system calibration

Three or more projectors project their respective images to form a composite image. In some cases all three projected images overlap. In order to compensate for distortions in this overlap, blending values are assigned to the projector pixels that contribute to the overlap regions. Pixels that contribute to the overlap of two projectors are assigned a blending value associated with this projector pair. Pixels that contribute to the overlap of three projectors are assigned a blending value that is the greater of the two blending values associated with the two projector pairs, after such blending value has been scaled.

Method for creating blending ramps for complex projector image overlaps

A method having corresponding apparatus and computer-readable media embodying instructions executable by a computer to perform the method comprises: in response to a request to print an image stored on a first website, automatically downloading an image editing pipeline for the image from a second website in response to the request, wherein the image editing pipeline describes one or more image editing operations for the image; automatically downloading the image from the first website; automatically generating an edited image based on the image and the image editing pipeline; and automatically printing the edited image on a printer.

Image editing pipelines for automatic editing and printing of online images

A method having corresponding apparatus and computer-readable media comprises: receiving a first image, wherein the first image includes a plurality of substantially parallel first stripes, wherein the first image conforms to a virtual display space, wherein the virtual display space comprises a first plurality of first pixel locations; projecting the first image from a projector onto a surface, wherein the projector is described by a projector space comprising a second plurality of second pixel locations; capturing a second image of the first image projected onto the surface, wherein the second image conforms to the virtual display space; detecting edges of the first stripes based on the second image; generating second stripes based upon the edges of the first stripes; and determining a correspondence between each second pixel location and one or more of the first pixel locations based upon the second stripes.

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San Jose, CA, United States of America

Steve Nelson