Abstract: A projection system includes a video projector to project images having an image region on a surface having a border area associated with the surface, and a processing system including a graphical processing unit to evaluate the border area and the projected image region, the graphical processing unit to transform the projected image region into an aligned projected image region coinciding with the border area.

Abstract: A projection capture system includes a camera to capture video of objects in a capture space, and a light emitting diode (LED) projector to illuminate the objects in the capture space and to project images captured by the camera into a display space. The projector includes a sequential display mode for sequentially displaying red, green, and blue light to project images captured by the camera into the display space, and a camera flash mode for simultaneously displaying red, green, and blue light to provide white light for illuminating the objects in the capture space during video capture.

Abstract: A system includes a sensor to capture multiple images of a portion of a first object illuminated by coherent illumination and a time of capture of each of the images; and a processor to compare two images of the multiple images to identify one or more touch points. Each touch point has a difference in value between the two images that is greater than a threshold. Upon determining a spatial shape formed by the identified touch points that corresponds to a pointing end of a pointing object, the system provides at least one of: i) a touch location of the pointing end relative to the first object, where the touch location is based on the spatial shape formed by the identified touch points, or ii) the time of capture of a second image of the two images that produced the spatial shape.

Abstract: A digital light projector having a plurality of color channels including at least one visible color channel providing visible light and at least one invisible color channel providing invisible light. The digital light projector including a projecting device projecting light from the plurality of color channels onto an environment in the form of an array of pixels which together form a video image including a visible image and an invisible image, the video image comprising a series of frames with each frame formed by the array of pixels, wherein to form each pixel of each frame the projecting device sequentially projects a series of light pulses from light provided by each of the plurality of color channels, with light pulses from the at least one visible color channel forming the visible image and light pulses from the at least one invisible color channel forming the invisible image.

Abstract: Examples disclosed herein relate to manipulating three-dimensional image in response to user gestures. Examples include rendering three-dimensional images based on three-dimensional image data, receiving sensor data corresponding to a user gesture, and recognizing the user gesture based on the sensor data Based on the recognized user gesture and the three-dimensional image data, determining and performing a function to update the corresponding three-dimensional image data and, consequently, alter the rendered three-dimensional images. The three-dimensional image data can be generated by a sensor coupled to the same computing device used to render the three-dimensional images.

Abstract: Examples disclosed herein describe, among other things, a computing system. The computing system may in some examples include a touch-sensitive surface, a display, and at least one camera to capture an image representing an object disposed between the camera and the touch-sensitive surface. The computing system may also include a detection engine to determine, based at least on the image, display coordinates, where the display coordinates may correspond to the object's projection onto the touch-sensitive surface, and the display is not parallel to the touch-sensitive surface, in some examples, the detection engine is also to display an object indicator at the determined display coordinates on the display.

Abstract: Examples disclosed herein relate to detecting misalignment of a touch sensitive mat Examples include detecting corners of the touch sensitive mat, determining a set of reference corners, performing a comparison of the detected corners of the mat with the set of reference corners, and determining a level of misalignment based on the comparison.

Abstract: A stylus having an applied force-sensitive tip-switch is disclosed. The stylus includes a tip-switch responsive to a variable applied force. Control circuitry determines whether the tip-switch has made contact with an object and, if so, the magnitude of the applied force resulting from the contact. The circuitry then encodes a signal that varies with the magnitude of the applied force and transmits the encoded signal to a computing device, enabling the computing device to indicate the two- or three-dimensional path of the tip-switch in the stylus on a computer screen. The circuitry also monitors a manual override switch that activates an encoded override signal for interpretation and use by the computing device while indicating the path of the tip switch on a computer screen.

Abstract: Examples disclosed herein relate to projecting onto a touch-sensitive surface a projection image having projected regions corresponding to target and non-target touch regions. Examples include a computing system having a touch-sensitive surface, and a camera to capture an image representing an object disposed between the camera and the touch-sensitive surface. The computing system may also include a detection engine to identify, based at least on the object represented in the image, at least one touch region of the touch-sensitive surface, and to generate a projection image including a projected region corresponding to the touch region, and a projector to project the projection image onto the touch-sensitive surface.

Abstract: A method includes receiving data representing an image captured of an object disposed on a surface in the presence of illumination by a flash light. The technique includes processing the data to identify an object type associated with the object and further processing the data based at least in part on the identified object type.

Abstract: Data is captured by an image capture device of an input object that has a first retroreflective pattern and a second, different retroreflective pattern on a surface of the input object. A position of the input object in three dimensions is determined based on the received data.

Abstract: A system includes an image capturing device, a user input device, and a processor coupled to the image capturing device and user input device. The processor includes instructions for capturing a data image with the image capturing device. The data image includes a signal from the user input device. The processor further includes instructions for deactivating the signal from the user input device and, after deactivating the signal from the user input device, capturing an ambient image. The processor further includes instructions for subtracting the ambient image from the data image and determining a position of the user input device in a three-dimensional space using a result of the subtracting.

Abstract: Examples disclosed herein describe, among other things, a computing system. The computing system may include, for example, a touch-sensitive surface to obtain a capacitive signature representing an object disposed on the touch-sensitive surface, and a camera to obtain supplemental data representing the object. The system may also include an identification engine to obtain, based at least on the capacitive signature, identification data associated with the object, and to obtain, based at least on the supplemental data, at least one characteristic of the object.

Abstract: A method and corresponding system for reconstructing the surface geometry of a three-dimensional object is disclosed. The system comprises a cluster of heterogeneous sensors, including a two-dimensional high-resolution camera and a three-dimensional depth camera, and a turntable operable to rotate incrementally. In operation, the turntable is rotated to first and second positions and two-dimensional and three-dimensional data sets are obtained using the two-dimensional high-resolution camera and the three-dimensional depth camera. Corresponding features from the two-dimensional data sets are identified and used to identify the same corresponding features in the three-dimensional data sets. The three-dimensional corresponding features are used to calculate a three-dimensional homography, which is used to align the three-dimensional data sets. Following alignment, a three-dimensional mesh is generated from the aligned data sets.

Abstract: Systems to accurately position an instrument includes an instrument with an interest point, an optical sensing system having a camera and a sensor coupled to a surface of the instrument, a motion detector, and a processor. The optical sensing system collects a set of optically-sensed positional data points. The motion detector collects a set of motion-sensed positional data points. The processor applies a correction function on the set of optically-sensed positional data points and on the set of motion-sensed positional data points to provide a set of corrected positional data points.

Abstract: A projector includes a lens, an image capturing device, and a processor connected to the projector and the image capturing device. The processor includes instructions for illuminating a work space using the lens, defocusing the lens, and after defocusing the lens, capturing an image of the work space.

Abstract: A method and system to make virtual changes to a real object is disclosed. Three-dimensional visual data regarding the object is received from a sensor cluster module, which tracks the location and orientation of the object. A three-dimension reconstructed model of the object is created from the visual data. User-selected virtual changes to the object are applied to the three-dimension reconstructed model. A two-dimensional image of the changes to the three-dimensional reconstructed model is projected with a projector onto the object in its current location and orientation.

Abstract: A system and a method for displaying an image are disclosed herein. The system includes a surface on which the image is displayed and a display rendering device to display the image on the surface. The system also includes a capture device to detect the surface, a processor, and a non-transitory computer-readable storage medium including instructions that cause the processor to: determine dimensions of the surface, determine a first orientation of the surface, convert the image to display on the surface based on the determined dimensions of the surface and the determined first orientation of the surface, detect repositioning of the surface to a second orientation, determine the second orientation of the surface, and convert the image to display on the surface based on the determined dimensions of the surface and the determined second orientation of the surface relative to the capture device.

Abstract: In some examples, a projection capture system comprises a controller, a camera operatively connected to the controller for capturing images of an object on a work surface of a workspace, a projector operatively connected to the controller, and a mirror above the projector to reflect light from the projector onto the work surface. The camera is located higher than the projector, and the controller is to control the camera to capture an image of a real object on the work surface, and control the projector to project the image of the real object onto the work surface.

Abstract: In one example, a portable projection capture device includes a digital camera and a projector mounted below the camera. The camera defines a capture area on a work surface within which the camera is configured to capture still and video images. The projector defines a display area on the work surface overlapping the capture area. The projector is configured to project into the capture area both images captured by the camera and white light for illuminating real objects in the capture area for camera image capture.