Abstract: Laser projection system suitable for commercial motion picture theaters and other large screen venues, including home theater, uses optical fibers to project modulated laser beams for simultaneously raster scanning multiple lines on screen. Emitting ends of optical fibers are arranged in an array such that red, green and blue spots are simultaneously scanned onto the screen in multiple lines spaced one or more scan lines apart. Use of optical fibers enables scanning of small, high resolution spots on screen, and permits convenient packaging and replacement, upgrading or modification of system components. Simultaneous raster scanning of multiple lines enables higher resolution, brightness, and frame rates with available economical components. Fiber-based beam coupling may be used to greatly enhance the flexibility of the system.

Abstract: An image display apparatus includes: a primary image processing device that performs image processing for an input image represented by input image information; a secondary image processing device that performs image processing for the input image processed by the primary image processing device; a light modulator that modulates an illumination light based on the input image information representing the input image processed by the secondary image processing device; and a projection optical system that projects the modulated light onto a screen as an image, wherein the secondary image processing device performs position adjustment processing, and outputs position information representing the display position of the input image to the primary image processing device after the position adjustment processing on the input image is completed, and the primary image processing device reflects the position information outputted from the secondary image processing device to perform position adjustment on the input ima

Abstract: A rear projection imaging system with an image warping distortion correction system using a camera and processing unit to generate a warping map that corrects for image distortion. The warping map is generated in an iterative process by displaying a known pattern on a viewing screen and, through the use of a camera, having a microprocessor determine the location and shape of the pattern on the screen. The microprocessor then compares the displayed image to the original reference image, calculates the distortion effects present in the projection optics, and generates a warping map.

Abstract: A scanning projector includes a mirror that scans in two dimensions, at least one of which is sinusoidal. A digital phase lock loop locks to the sinusoidal movement of the mirror. A free-running pixel clock is provided. An interpolation component interpolates pixel intensity data from adjacent pixels based on the position of the mirror when a pixel clock arrives.

Abstract: The present invention provides an image correction system and method for multi-projection, the image correction system including a plurality of projection surfaces which are installed in a single theater and a projection device which projects images on the plurality of projection surfaces, in which the images projected by the projection device on the plurality of projection surfaces are corrected based on relative differences in properties of the plurality of projection surfaces.

Abstract: An image projecting method comprises determining the position of a projection surface within a projection zone of at least one projector based on at least one image of the projection surface, the projection zone being sized to encompass multiple surface positions and modifying video image data output to the at least one projector so that the projected image corresponds generally to the projection surface.

Abstract: The present invention provides a projection display device configured to solve a caption dropout problem. CPU 3 determines a correction amount required to correct an image signal for distortion. Scaler 4 corrects the image signal for distortion based on the correction amount. Caption signal processing circuit 5 adjusts the display content of a caption signal based on the correction amount in such a manner that the entire caption indicated by the caption signal is displayed. Display image generation circuit 6 synthesizes the caption signal with the display content thereof adjusted by caption signal processing circuit 5, with the image signal corrected by scaler 4. Projection section 7 projects the synthesized image signal.

Abstract: The present invention provides a projection display apparatus realizing improved operability at the time of registration adjustment irrespective of a use situation of the apparatus. In the case where misregistration occurs between primary color lights, video signals for three colors are corrected (registration adjustment is performed) so as to reduce the misregistration in accordance with an input adjustment value. An image inverting process is performed on an input video signal so that the image is inverted in a display screen. By a configuration by the user, the image is properly inverted in the display screen. When the image inverting process is performed, an adjustment value, with a sign different from that in the misregistration direction in a coordinate system where the image is not inverted, is input by an operation on the display screen.

Abstract: The present invention provides a mini-projector applied for a video output device. The video output device includes a microprocessor. A projection optical engine is coupled to the microprocessor for projecting a video data. A charging module is capable of charging to a first battery of the mini-projector and/or a second battery of the video output device. A male connector is couple to a female connector of the video output device. A switching unit is coupled to the charging module for switching the projecting function of the projection optical engine or the charging function of the second battery of the video output device.

Abstract: A projection-type display apparatus includes a display unit having a first effective area that is the largest usable area for a display, and a geometric distortion corrector configured to correct a geometric distortion by performing, for an input image that is superimposed onto an image of a second effective area that is set in and smaller than the first effective area and is a virtual effective area whose geometric distortion has not yet been corrected, enlargement processing so that a third effective area that is a post-correction virtual effective area can have a portion located in an area between the first effective area and the second effective area and the second effective area can be enlarged.

Abstract: A device, such as a set-top box, may include logic to allow television customers to automatically test and adjust the quality of the displayed video signal. A set-top box may receive a user selection of whether to perform a video test using an automatic loopback test sequence or a user subjective test sequence. The set-top box may perform, when the automatic loopback test sequence is selected, a video quality test that may include transmitting a signal from the set-top box, receiving a loopback version of the video signal, and comparing the received loopback version of the video signal to the transmitted signal. The set-top box may perform, when the user subjective test sequence is selected, a video quality test that may include displaying one or more test patterns to a user and receiving feedback from the user relating to a quality of the displayed test patterns.

Abstract: A method is provided for automatically adjusting a size of characters using a camera. The method includes receiving an image with characters; adjusting a focus of the image with characters and detecting a region and a size of characters in the image; determining whether the size of the characters in the image falls within a preset range; recognizing the characters in the image and displaying the recognition results, if the size of characters falls within the preset range; and automatically adjusting a zoom ratio of the image and recognizing the characters in the resized image, if the size of the characters does not fall within the preset range.

Abstract: A projection system includes a plurality of projection apparatuses. Each of the plurality of projection apparatuses includes a projection unit configured to project an image onto a projection surface, and an adjusting unit configured to adjust a state of displaying an image projected onto the projection surface by the projection unit. The projection system further includes a controller configured to cause the projection units of the plurality of projection apparatuses to simultaneously project a test image in different forms. The controller controls the adjusting unit of the plurality of projection apparatuses to adjust a state of displaying an image projected on the projection surface by the projection unit based on each state of displaying of the test images in different forms.

Abstract: A projector includes: a lens position control unit which controls a projection position of an image by shifting a projection lens; a signal receiving unit which receives a position control start signal to start position control and a lens shift signal from a remote controller; a direction conversion memory unit which stores direction conversion information corresponding to the lens shift signal as information for performing a predetermined conversion of the shift direction of the projection lens; a shift direction converting unit which converts the shift direction of the projection lens based on the direction conversion information; a menu display unit which displays a direction conversion menu screen through which the direction conversion information is inputted; and a control unit which allows the menu display unit to display the direction conversion menu screen when a predetermined condition is satisfied at the time of reception of the position control start signal.

Abstract: Provided is a projection system including an image processor processing image data, the image processor acquires subsequent image data having an object included in an image temporarily subsequent to an image currently displayed by the projector. The projector stores the image data and the subsequent image data and updates the currently displayed image into the subsequent image on the basis of the subsequent image data when the update information received by the projector reception unit indicates that the currently displayed image is updated into the subsequent image.

Abstract: A projection apparatus which projects an image onto a projection plane based on an input image signal, the apparatus comprises: a division unit configured to divide an image represented by the input image signal into a plurality of regions; a deformation unit configured to deform various types of shapes of the images divided by the division unit; a combination unit configured to combine the images deformed by the deformation unit; and a projection unit configured to project the image combined by the combination unit onto the projection plane.

Abstract: A projector includes: an image projection unit which projects an image corresponding to image information; an image pickup unit which shoots the image projected from the image projection unit; an image switching unit which switches state of the image based on a predetermined phenomenon; and a projection condition control unit which allows the image projection unit to project a predetermined test image at the time when the image switching unit switches state of the image, and allows the image pickup unit to shoot the projected test image to control projection condition of the image based on the picked-up image result.

Abstract: The present invention is a method and apparatus for increasing the effective contrast ratio and brightness yields for digital light valve image projectors using a variable luminance control mechanism (VLCM), associated with the projector optics, for modifying the light output and provide a correction thereto; and an adaptive luminance control module (ALCM) for receiving signals from the video input board, the adaptive luminance control module producing a signal on a VLCM bus connecting the variable luminance control mechanism and the adaptive luminance control module, the signal causing the variable luminance control mechanism to change the luminance of the light output and provide a corrected video signal for the projector.

Abstract: A system for, and method of, improving video image sharpness and a continuous-light-emitting video display system employing the system or the method. In one embodiment, the system for improving video image sharpness includes: (1) a sub-frame generator configured to receive a frame of a video image and generate plural sub-frames therefrom and (2) a spatial filter, associated with the sub-frame generator and configured to cause the plural sub-frames to be spatially filtered with respect to one another based on a display sequence thereof.

Abstract: Projection systems and methods may provide improved remote capabilities and interaction with client devices. Further, systems and methods may provide for calibration of a projection system, in particular using an auxiliary device. Further, methods may provide control of audio associated with presentation data, in particular at client devices.

Abstract: Controlling at least one video projector of a video projection system comprising multiple video projectors having a modifiable focal length and adapted to project sub-images. After determining a first calibration parameter associated with a first predetermined focal length of the video projectors, a second calibration parameter corresponding to a second predetermined focal length of the video projectors is computed, the second calibration parameter computed as a function of the first calibration parameter and the second predetermined focal length different from the first one. A display parameter is computed for a video projector, the display parameter being computed as a function of second calibration parameter, and a sub-image to be projected by the video projector is calculated according to the computed display parameter.

Abstract: A projection display apparatus includes an image projecting unit projecting an image, an operation unit as an operation device whose output value changes depending on the amount of operation, a correction amount setting unit changing a keystone correction amount in accordance with an output value of the operation unit, and a keystone correcting unit performing keystone correction on an image to be projected in accordance with the keystone correction amount. A zero reference position in which the keystone correction amount is zero is set in an operation range of the operation unit. The correction amount setting unit sets a dead zone in the operation range such that the dead zone includes the zero reference position and an area surrounding this position, and sets the keystone correction amount to zero in accordance with the output value corresponding to the inside of the dead zone.

Abstract: A method for reducing view-dependent artifacts in a multi-projector system includes the steps of measuring, from multiple viewpoints, projection characteristics of an image projected by a multi-projector system, estimating view-dependent projection parameters that can reduce view-dependent artifacts, and computing rendering parameters for each projector so as to reduce the view-dependent artifacts.

Abstract: A projection-type display apparatus that projects an image on a screen and performs image display includes at least one laser source that emits a coherent light beam, an illuminating optics that propagates the light beam emitted from the laser source into a predetermined optical path to guide the light beam to the screen, a reflective optical modulator that forms the image to be displayed on the screen on an illuminated surface illuminated by the light beam guided by the illuminating optics, and a projection optics that magnifies and projects the image formed on the illuminated surface of the reflective optical modulator on the screen. The illuminating optics includes a diffusion device, which diffuses the propagated light beam, and is arranged on a light propagation path near a conjugated position with the reflective optical modulator.

Abstract: A video calibration device comprising an elongated image tube having a length, a first opening at one end of the image tube and a second opening at the opposite end of the image tube. The device includes an elongated sensor tube having a length, a first opening at one end of the sensor tube and a second opening at the opposite end of the sensor tube. The first opening of the sensor tube is adapted to support a video calibration sensor. A video calibration sensor is disposed in the first opening of the sensor tube. The sensor tube is sealingly secured to the image tube at an angle whereby the second opening of the sensor tube and the second opening of the image tube are substantially juxtaposed.

Abstract: Determining a rectangular area with a given aspect ratio within a global boundary formed by multiple projectors. An iterated process is repeated at moved locations along the global boundary, until a stopping condition is met. According to the iterated process, a point at a location of the global boundary is selected, a minimum rectangle with the given aspect ratio is grown from identified directions, and the largest rectangle encountered is delivered when the stopping condition has been met. For each such direction, the minimum rectangle is grown in the direction from the selected point until it intersects with a boundary, the grown rectangle is grown in another direction responsive to a determination that the grown rectangle can grow in another direction. The largest rectangle encountered previously is replaced, responsive to a comparison which indicates that the grown rectangle is larger than the largest rectangle encountered previously.

Abstract: An image processor that corrects image signals corresponding to sub-pixels which form one pixel includes: a shift amount storage section that stores shift amounts of display positions of display sub-pixels corresponding to the sub-pixels which form a display pixel with respect to a predetermined reference position within a display image; and an image signal correcting section that corrects image signals corresponding to sub-pixels, which form each pixel of an input image, on the basis of the shift amounts stored in the shift amount storage section. The image signal correcting section corrects image signals in which dummy image signals corresponding to dummy sub-pixels, which are provided outside sub-pixels in an endmost portion of the input image, are added to input image signals of the sub-pixels.

Abstract: A method for calculating a position adjustment amount of projected image includes a first image step of obtaining first image data which is obtained by an image capturing device imaging first feature points which are displayed using light modulated by a first light modulation device, a second imaging step of obtaining second image data which is obtained by the image capturing device imaging a second feature point which is displayed using light modulated by a second light modulation device, an adjustment amount calculation step of calculating an adjustment amount based on the first image data and the second image data.

Abstract: A projector displays an image on a projection surface. The projector has a zoom adjusting module and a keystone correcting module. The zoom adjusting module adjusts zoom level of a zoom lens for enlarged projection of image light. The keystone correcting module corrects trapezoidal distortion of the image displayed on the projection surface by means of forming the effective panel image in a revised image formation area, the revised image formation area being part of the image formation area of the panel surface.

Abstract: Embodiments of the present invention generally relate to circuits, systems and methods that can be used to detect light beam misalignment, so that compensation for such misalignment can be performed. In accordance with an embodiment, a circuit includes a photo-detector (PD) having a plurality of electrically isolated PD segments. Additionally, the circuit has circuitry, including switches, configured to control how currents indicative of light detected by the plurality of electrically isolated PD segments are arithmetically combined. When the switches are in a first configuration, a signal produced by the circuitry is indicative of vertical light beam alignment. When the switches are in a second configuration, the signal produced by the circuitry is indicative of horizontal light beam alignment. The signals indicative of vertical light beam alignment and horizontal light beam alignment can be used detect light beam misalignment, so that compensation for such misalignment can be performed.

Abstract: A projection apparatus including an illumination unit, a brightness detection circuit, a signal conversion circuit, and a control unit is provided. The illumination unit generates a light source according to a plurality of driving signals and provides a temperature sensing signal according to the temperature of the light source. The brightness detection circuit generates a plurality of brightness sensing signals. The signal conversion circuit converts the temperature sensing signal and the brightness sensing signals into temperature information and a plurality of brightness information. The control unit comprises a setting table for storing a predetermined temperature information and a plurality of predetermined brightness information, and the control unit adjusts the driving signals in order to identify the converted temperature information and the converted brightness information conform to the stored information in the setting table.

Abstract: A system (10) for multispectral imaging includes a first optical filter (24, 20) having at least two passbands disposed in different spatial positions on the first optical filter, a second optical filter (20, 24) having another at least two passbands, and processor (32) adapted to identify an intensity of light in the at least two passband of the second optical filter.

Abstract: A projector divides and projects a single image onto two different projection surfaces and performs virtual user interface through one projection surface. The projector projects a VUI screen image on a desk and projects a main projected screen image on a wall. The projector includes a light receiving element, which is installed at a position that receives light emitted to the desk (the projection surface of the VUI screen image) and reflected (or scattered) by an object in the vicinity of the desk. The projector calculates a position of the object based on a light detection timing of the light-receiving element and a scanning position of light at each time and changes a projected image based on the calculated position. The projector displays a designated region of the VUI screen image to be brightened.

Abstract: Methods for reducing optical distortion such as keystone distortion can include receiving an input image and modifying the input image by applying two separate 1D operations to the input image and applying a polyphase filter to the input image, where the first 1D operation is performed after application of the second 1D operation has begun. The modified image can then be projected.

Abstract: A projector projecting an image includes: an imaging unit taking an information transmission image which is part of a projected image of the other projector and includes drive condition information of the other projector; and a control unit changing drive conditions of the projector based on the drive condition information included in the information transmission image.

Abstract: In an example embodiment, a calibration module in a projector platform establishes an initial configuration of settable exposure attributes for a digital camera. The calibration module projects a preview image onto a surface and captures the projection of the preview image with the digital camera and receives input from a user identifying regions of interest in the capture of the preview image. Next the calibration module projects an exposure image onto the surface. The calibration module then computes a final configuration of exposure attributes for the digital camera by iteratively: (a) capturing the projection of the exposure image with the digital camera; (b) measuring descriptive statistics relating to the color channels of pixels in the regions of interest in the capture of the exposure image; (c) evaluating the descriptive statistics with an evaluation function determined by a calibration process; and (d) establishing a revised configuration of exposure attributes.

Abstract: 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.

Abstract: In order to trigger an out of focus alert when the focus level of a video frame meets a focus criteria, a method is performed including the operations of: receiving a video frame, partitioning the video frame into a plurality of blocks, calculating an array of discrete cosine transformation (DCT) coefficients for at least one of the plurality of blocks using a DCT, classifying each of the at least one of the plurality of blocks based on the array of DCT coefficients for that block, calculating a focus level of the video frame from the block classifications, and triggering an out of focus alert if the focus level meets a focus criteria.

Abstract: A mobile device such as a robot includes a processor, a memory that stores components executable by the processor, and a projection assembly. The projection assembly includes a projector, a lens, a movable mirror, and a first projection surface integral with a surface of the mobile device. The components include a projection component and a control component. The projection component determines the projection parameters, and projects the image onto the movable minor, dependent upon the projection parameters. The control component causes the projector and the lens to focus the image onto the first projection surface, and further causes the movable mirror to reflect the image onto the first projection surface.

Abstract: A high resolution projection system has a light source for generating and emitting light and a plurality of digital micromirror device imagers configured to receive and reflect the light.

Abstract: In projection television (PTV) systems utilizing folded optical systems such as a rear projection CRT, DLP, LCD, or LCOS based televisions, or the like, an automatic geometric alignment (AGA) system including a first programmable logic, a second programmable logic operably coupled to the first programmable logic, and light sensors positioned in the over-scan region along the border of the screen and operably coupled to first programmable logic. In operation, the first programmable logic causes an on screen display (OSD) system to display and move test patterns on the screen and, using feed back data received from the light sensors, determines the geometric alignment and/or pin cushion effect error in the displayed test pattern. The second programmable logic, which includes deflection shaping circuitry to align, center or steer the beams from the projection systems, utilizes data received from the first programmable logic to compensate for geometric alignment error.

Abstract: In the usage of table projection of a projection type display, depending upon a sitting position of a participant of a conference, the participant views an image projected upon a table as an inversion image turned upside down, resulting in poor visual recognition. In order to improve visual recognition, images are rotated, synthesized and displayed in accordance with the viewing direction of each participant. More specifically, the projection type display is provided with a two-image synthesizing unit for synthesizing two images obtained by processing an input image by two image rotation units for rotating the input image by a first angle and a second angle different from the first angle, into one image on a screen. The projection type display is also provided with an image rotation unit and an image inversion unit for two-image display on a screen.

Abstract: A projection display apparatus includes: a light source; a spatial light modulation device modulating, on the basis of a video signal, each of primary color lights for color display emitted from the light source; projecting means for projecting, onto a screen, each of the primary color lights modulated by the spatial light modulation device; and correcting means for correcting, based on a given correction value, the video signal for each of the primary color lights so as to reduce misregistration between the primary color lights projected on the screen, and supplying the corrected video signal to the spatial light modulation device. The correcting means is configured to correct the video signal according to a single correction value such that a group of correction target points selected in a projected image on the screen are collectively processed as a single correction unit.

Abstract: To provide a projection-type image display system, a projector, a program, an information storage medium, and an image projection method that enable simple changing of a projection position, a liquid-crystal projector is provided with: a sensor which senses a projection target area and outputs sensing information; an edge detection section which outputs detection information, based on the sensing information; a projectable area determination section which determines a projectable area which has no obstructions within the projection target area, based on the detection information; a projection area selection section which selects a projection area within the projectable area, based on a user selection or a predetermined reference; a projection-area/pixel-area associating section and a lens adjustment section which performs predetermined adjustments in such a manner that an image is displayed on the projection area; and an image projection section which projects an image towards the projection area, based on th

Abstract: A projection display may include a frame rate conversion section selectively performing a first frame rate conversion process or a second frame rate conversion process, an image process section selectively performing a black insertion process or a pair-frames gamma process, and outputting a result as a pair of consecutive image frames, a projection display section projecting and displaying an image on the basis of the video signal processed by the frame rate conversion section or the image process section, and a control section controlling the frame rate conversion section or the image process section according to a selected operation on a menu screen, where the control section performs the user interface function so that the black insertion process or the pair-frames gamma process by the image process section is selected with priority over the first frame rate conversion process by the frame rate conversion section.

Abstract: First, a delivery delay, i.e. the time it takes for a content to be captured and a representative frame made available (i.e. delivered), is determined. Second, a video capture interval, i.e. a minimum time delay requirement between stable captured content frames, is determined. In other words, the recycle time-period after which it is safe to change frame content during a capture interval without impacting a prior stable video frame in the pre-delivery stage is determined.

Abstract: An image projection apparatus comprises a light projector (605) which projects an image onto a surface (603) of an object. A focussing processor (609) is arranged to focus the image on an image plane (607) and a controller (611) dynamically varies the position of the image plane (607) relative to the surface (603). The movement may be a predetermined periodic movement and the surface may specifically be a non-planar surface. The movement may result in a blurring effect independent of distance, and may specifically provide a blurring effect that can be pre-compensated by pre-filtering of the image to be projected. The invention may allow improved quality of a projected image, such as e.g. of an image projected on a non-planar or moving surface.

Abstract: System and methods for outputting coordinated audio and video presentations are provided. The system includes a plurality of speakers and a display device capable of providing a plurality of projection images. Sound generated by the plurality of speakers is coordinated with the plurality of projection images. The coordination process may be automatically performed according to position change of the plurality of projection images. Sound generated by the plurality of speakers may be further modulated according to position of a user or motion of a video object being displayed in one or more of the plurality of projected images.

Abstract: 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.

Abstract: A projector includes: a first image projection section adapted to project a first image based on a first image signal, a second image projection section adapted to project a second image based on a second image signal such that pixels of the second image are shifted from pixels of the first image, a correction section adapted to correct the image signal input to the image projection section using a correction filter adapted to correct a difference in optical transfer function between the plurality of image projection sections; and a sharpening section adapted to execute a sharpening process of sharpening an edge portion of the image to be displayed, on the image signal having been corrected by the correction section and to be input to the plurality of image projection sections.