Abstract: An image capture method comprises generating a synchronization signal based on modulated illumination; and synchronizing image frame capture of at least one image sensor using the synchronization signal with the illumination timing of an active pointer within a region of interest in the field of view of the at least one image sensor.

Abstract: A method comprises detecting the location of a portable computing device within a collaboration system based on wireless communications between the portable computing device and a plurality of collaboration sites within the collaboration system; and displaying a map on the portable computing device that identifies the location of the portable computing device within the collaboration system and that specifies a path to a target collaboration site.

Abstract: A method comprising obtaining a first location of a first pointer contact on an input surface; calculating a restricted area proximate the first location; processing the first pointer contact; and inhibit processing of a second location of a second pointer contact within the restricted area.

Abstract: An interactive input system comprises computing structure; and an input device detecting at least one physical object carrying a recognizable pattern within a three-dimensional (3D) input space and providing output to the computing structure, wherein the computing structure processes the output of the input device to: recognize the pattern carried by the at least one physical object in the 3D input space; and modify an image presented on a display surface by applying a transition to digital content associated with the at least one physical object based on a detected state of the at least one physical object.

Abstract: A computerized method of managing a collaboration space comprises partitioning the collaboration space into a plurality of tiles in a tree structure; and associating each graphic object with a tile in said tree structure; said tile being the smallest tile in the tree structure that substantially accommodate said graphic object.

Abstract: An interactive input system comprises an interactive surface; at least one proximity sensor in proximity with the interactive surface and generating output signifying user proximity to the interactive surface; and processing structure configured to process user input generated in response to user interaction with said interaction input system and output from the at least one proximity sensor, said processing structure controlling interactive input system operation based upon at least one of said user input and proximity sensor output.

Abstract: An illumination structure for an interactive input system having a display surface and a light source for backlighting the display surface is provided. The illumination structure includes at least one redirection structure positioned with respect to the display surface to receive excess light produced by the light source and to redirect the excess light generally across the display surface for backlighting one or more pointers. A method is provided for determining the location of at least one pointer in an interactive input system.

Abstract: A method for generally continuously calibrating an interactive input system, the interactive input system comprising at least two imaging devices having fields of view encompassing a region of interest, at least one of the imaging devices calibrated using a projection matrix having an associated quality metric, the method comprises estimating new values for parameters of the projection matrix based on a plurality of computed locations of at least one pointer brought into proximity with the region of interest; calculating a new quality metric using the new parameter values; and if the new quality metric is more accurate than the existing quality metric, updating the projection matrix using the new parameter values.

Abstract: Systems, devices, and methods are provided for wirelessly communicating configuration data from mobile devices for use by interactive display devices. In some aspects, a processing device can identify two or more mobile devices participating in a session for utilizing an interactive display device. The processing device can receive configuration data from each of the mobile devices via a wireless transceiver. The processing device can configure an interactive display device to present outputs during the session using attributes that the processing device identifies from the received configuration data. In additional or alternative aspects, a processing device can identify at least one mobile device participating in a session for utilizing an interactive display device. The processing device can associate outputs presented by the interactive display device with an entity that is identifiable from configuration data that is received from the mobile device.

Abstract: An illumination assembly for an interactive input system (20), comprises at least one imaging device (60) capturing image frames of a region of interest; a plurality of illumination sources (84a, 84b, 84c) associated with the imaging device and being located at different positions relative to the imaging device, the illumination sources providing illumination to the region of interest; and a controller (72) communicating with the illumination sources, the controller conditioning the illumination sources so that the illumination sources provide illumination to the region of interest in succession, the timing of image frame capture by the imaging device being coordinated with the illumination pattern of the illumination sources.

Abstract: A method of modifying an annotation input on an interactive display in an interactive input system is described. Reference pixel values in a region of interest of a reference frame are determined. The region of interest is associated with the annotation. The reference pixel values are stored in memory. It is determined whether current pixel values in the region of interest of a current frame differ from the reference pixel values. The annotation is faded if the current pixel values in the region of interest differ from the reference pixel values. A computing device configured to implement the method and a computer-readable medium having stored thereon instruction to implement the method are also described.

Abstract: A method comprises capturing image frames of an input area using a plurality of imaging devices, each having a field of view encompassing at least a portion of the input area; processing captured image frames to identify a plurality of targets therein; analyzing the identified plurality of targets to determine if the targets represent a plurality of projections of an input object; and if so, identifying a pattern of the projections thereby to identify the input object.

Abstract: An interactive input system comprises a display panel; a first illumination source providing illumination across an outer surface of the display panel such that when a pointer is brought into proximity with the outer surface, the pointer reflects illumination from the first illumination source through the display panel; at least one imaging device having a field of view aimed at an opposite outer surface of the display panel, the at least one imaging device capturing images including illumination reflected by the pointer through the display panel; and processing structure in communication with the at least one imaging device, said processing structure processing the captured images to determine a location of the pointer relative to the outer surface.

Abstract: A pen tool for use with a machine vision interactive input system comprises an elongate body, a tip on the body and a variable reflector disposed on the body. The variable reflector comprises a reflecting portion and an attenuating portion configured to control the amount of illumination reflected by the reflecting portion.

Abstract: A method for determining the location of a touch input in an application window on an interactive surface of a display device is described. The application window comprises a canvas configured to display at least a portion of a user interface. The method comprises the following steps. A first location of the touch input associated with a first coordinate space is determined. The first coordinate space is associated with the interactive surface. The touch input is used to emulate a mouse event. A second location of the touch input associated with a second coordinate space is determined in response to the emulated mouse event. The second coordinate space is associated with the user interface. At least one offset parameter is calculated, correlating the first coordinate space with the second coordinate space.

Abstract: A method is described for manipulating a view displayed on one or more follower participants' devices to track a view displayed on a lead participant's device. A request to manipulate the view displayed on the one or more follower participant devices is received. The lead participant is identified. The follower participants are identified. A lead view of the lead participant is determined. The lead view is communicated to the follower participants computing devices for display. A computing device and a non-transitory computer readable medium having instructions configured to implement the method are also described.

Abstract: The present invention relates to a method and system for managing profiles for use with touch systems. A user logs into a communal device using a pointer paired with a mobile device. The communal device is authenticated and retrieves the user's profile. The user profile is used to setup a workspace on the communal device. The workspace is granted access to the user's content on a content server. When the communal device has multiple users, each workspace may be shared or not depending on the user's requirements. Each pointer is individually identified to a particular user and workspace.

Abstract: A method comprises receiving an input event associated with a first user ID, the input event being a command for selecting at least one graphic object; determining if a selection is currently associated with the first user ID; and if no selection is currently associated with the first user ID creating a first selection; associating the first selection with the first user ID; and including the selected at least one graphic object in the first selection.