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| Number | Title | Issue Date |
| 8174627 | Selectively masking image data Apparatus and methods for selectively masking image data and inhibiting projection of light corresponding to the masked image data. Projection devices include a light engine to project light onto a surface within an available field of projection and a processing uni... | 05/08/2012 |
| 8111336 | Correcting scanned projector distortion by varying the scan amplitude Briefly, in accordance with one or more embodiments, scanned beam projector may comprise a light source, a scan drive and a scanning platform to project an image onto a projection surface. The scan drive circuit is capable of at least partially correcting distortion... | 02/07/2012 |
| 7384158 | Image projection system and method An image projection system and method is presented for optically projecting an image onto a display surface with visually correct geometry and optimum image quality. The projection system includes an image processing unit for receiving the input image data and gener... | 06/10/2008 |
| 7380946 | Semiautomatic keystone correction system and method The invention relates to a semiautomatic keystone correction system and method. The system includes an interface and a controller. A user selects a plurality of corners within an image projected on a projection surface using the interface and the controller predisto... | 06/03/2008 |
| 7379614 | Method for providing services on online geometric correction using GCP chips Disclosed is a method for providing services on online geometric correction using, in which information related with GCP (Ground Control Point) used for correcting geometric distortion of an image collected by an aircraft or a satellite are transmitted online throug... | 05/27/2008 |
| 7370976 | Projection type image display device The device has flexure correcting means for operating to rotate a first eccentric cam provided at a central part of a first side of a reflecting mirror, thereby moving up and down the central part of the first side to correct the flexure of the reflecting mirror, to... | 05/13/2008 |
| 7362385 | Image conversion device image conversion method and image projection device An image processing apparatus for reducing a load of processing of an interpolation operation at the time of a correction of keystone distorted image is provided. The image processing apparatus has an interpolating unit (11, 12) for receiving as input origina... | 04/22/2008 |
| 7352913 | System and method for correcting multiple axis displacement distortion A system and method for correcting distortion in projected images caused by the projection of an input image by a projector lens onto a projection screen having a surface that is not orthogonal to the projection axis of the projector. Projection parameters including... | 04/01/2008 |
| 7347564 | Keystone correction using a part of edges of a screen The projector comprises an image forming panel that forms an effective panel image for modulating the light into an image light in an image forming area of a panel surface, and an image capturing unit for capturing a specific projection area wherein the image light ... | 03/25/2008 |
| 7336277 | Per-pixel output luminosity compensation Per-pixel luminosity adjustment uses a luminosity mask applied as a texture. In one embodiment, a luminosity texture is defined. Pixel data of an underlying image is converted to an image texture. The image texture is blended onto a target surface. The luminosity te... | 02/26/2008 |
| 7333130 | Apparatus and method of re-adjusting convergence of a projection TV A method and an apparatus of re-adjusting convergence of a projection TV are disclosed. The apparatus includes a display device on which an image is projected and at least one light-sensing element (101) being provided around the display device. The light-sen... | 02/19/2008 |
| 7310174 | Method and apparatus for scanning regions A beam scanner is operable to scan light in two or more axes, typically in a raster pattern that includes a fast scan axis and a slow scan axis. Plural beams of light are scanned, each beam of light producing a scanned region that at least partially overlaps at leas... | 12/18/2007 |
| 7289169 | Storage of projected presentations A method and system for capturing real-time digital image data that is in rasterized form. A digital source sends rasterized data to a storage device, which passes the rasterized data to a display device. The rasterized data is then converted into a page format, suc... | 10/30/2007 |
| 7270422 | Image processing system, projector, program, information storage medium, and image processing method A projector includes an image projection section, a sensor that senses a projected first calibration image at a low resolution and generates first sensing information, senses the first calibration image at a high resolution and generates third sensing information, a... | 09/18/2007 |
| 7271853 | Apparatus and method for correcting distortion of image and image displayer using the same An apparatus and a method for correcting a distorted image is capable of correcting an optical distortion of an image and misconvergence by prewarping an inputted image without using a convergence yoke, and an image displayer using the same. The apparatus for correc... | 09/18/2007 |
| 7262816 | Rear projection imaging system with image warping distortion correction system and associated method 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... | 08/28/2007 |
| 7252387 | System and method for mechanically adjusting projector pose with six degrees of freedom for image alignment A method adjusts a pose of a projector with respect to a display surface. A homography HD,P is determined between a display surface and a projector. The homography HD,P is decomposed into rotation and translation parameters expressing a pose M | 08/07/2007 |
| 7252386 | Keystone distortion correction of a projector The method comprises the steps of: capturing an output image projected on an actual projection surface; outputting imaging information that includes brightness information having a correlation to a brightness; and correcting a distortion of the output image in relat... | 08/07/2007 |
| 7253841 | Remote control method of tile display A remote control method of tile display is disclosed for a tile display system, which contains a host computer, several projector modules, and a screen. The images produced by the projector modules are simultaneously displayed on the screen as a single image. The re... | 08/07/2007 |
| 7239331 | Method and apparatus for correction of perspective distortion Perspective distortion in an imaged scene is corrected by identifying a group of points in the imaged scene such that the group of points define a shape. Two vanishing points are determined based on the group of points in the imaged scene. The process determines a f... | 07/03/2007 |
| 7233370 | Method for correcting for distortion of projected image, program for correcting image distortion, and projection-type image display device An image distortion correction method is provided which is capable of correcting for distortion of a projected image by designating an arbitrary correction point by using a simple and easy operation without independently providing a display device and/or a pointing ... | 06/19/2007 |
| 7227592 | Self-correcting rear projection television In a rear projection television, cathode ray tubes are mounted inside an enclosure so that each cathode ray tube projects output images onto a rear projection screen using a corresponding electron beam. Calibration images are generated for each cathode ray tube. A c... | 06/05/2007 |
| 7215362 | Auto-calibration of multi-projector systems The method for automatically calibrating a multi-projector system with at least two projectors, a digital camera and a control unit for controlling the projectors and the camera is performed according to the following steps: produc... | 05/08/2007 |
| 7204596 | Projector with tilt angle measuring device A projector having a tilt angle measurement device is provided with: a projection device for projecting an image onto a projection surface; a tilt angle measurement device for calculating the tilt angle that is formed between the axis of projection of the projection... | 04/17/2007 |
| 7201482 | Projection type display device A projection type display device includes a distortion corrector for correcting a projected image for distortions when the image is projected with a projection optical axis tilted with respect to a screen. The distortion corrector comprises a tilt angle generator fo... | 04/10/2007 |
| 7156524 | Projection type video display and method of adjusting the same at factory shipping A microcomputer performs image drawing processing of a projection video for adjustment by an OSD (On-Screen Display) circuit when it detects the press of an adjustment command key. The projection video for adjustment is an image having a black-and-white area high in... | 01/02/2007 |
| 7150536 | Projector and projection image correction method thereof A transformation coefficient storing unit has correction tables which are generated based on classification of zooming magnification in a manner of arithmetic progression. An optical mechanism unit supplies information on a zooming magnification Z to a switch contro... | 12/19/2006 |
| 7144115 | Projection system An image projector that modifies projected images. An imaging device preferably senses information about a projection screen upon which an image is projected. Based on the sensed information about the projection screen, the projector modifies the image in a desired ... | 12/05/2006 |
| 7142258 | Image distortion correcting apparatus and method thereof An image distortion correcting apparatus is provided tat is capable of correcting keystone distortion and pincushion distortion in a video display device. The apparatus may include a reference image generating device for generating a reference image and setting a co... | 11/28/2006 |
| 7137707 | Projector-camera system with laser pointers A rigidly-coupled projector-camera system is augmented with laser pointers. The projector-camera system and lasers can be used to determine homography between the projector and a display surface, so that a projection of any desired geometry can be made on the displa... | 11/21/2006 |
| 7131732 | Projector apparatus, inclination angle obtaining method, and projection image correction method In a projector to which the present invention is applied, a distance sensor measures distances between the projector and a plurality of points on a screen. An angle calculation unit obtains a formula representing a screen surface, based on plural pieces of distance ... | 11/07/2006 |
| 7130095 | Correcting for image distortion in image projectors An arrangement for, and a method of, correcting for image distortion in an image projection system include making the scan lines of the projected image all of the same length by adjusting the amplitude of a drive signal used to sweep a laser beam to form each scan l... | 10/31/2006 |
| 7125122 | Projection system with corrective image transformation An image projection system that corrects an image to be projected onto a projection surface by sensing at least a portion of that surface, and based upon the sensed portion, determining and applying a corrective transformation to the image, after which the corrected... | 10/24/2006 |
| 7104653 | System for correcting approximate expressions used in geometrical correction of projected images A computer calculates the shape of a figure after transformation using an approximate expression previously set for correcting a projected image for distortion associated with the shape of a projection surface of a cylindrical screen (an equation representative of a... | 09/12/2006 |
| 7093940 | Adjustment in the amount of projected image distortion correction An exemplary aspect of the invention can provide a method for easily adjusting the distortion of a projected image. In adjusting the amount of distortion correction, values of the amount of distortion correction for a desired outline form to be formed based on desir... | 08/22/2006 |
| 7092045 | Projection-type display apparatus In measuring the angle of inclination of a liquid crystal projector with respect to the screen for automatically adjusting a trapezoidal distortion, the calculation of the angle of inclination by determining the distance from the screen using a distance sensor conve... | 08/15/2006 |
| 7086743 | Rear projection type projector and its method of use A rear projection type projector is provided. An optic axis of modulated light to be projected to a screen projection surface is slanted to a normal N-N of the screen projection surface and projected to a trapezoidal range ABCD housing the actual projection range EF... | 08/08/2006 |
| 7053976 | Defective pixel compensation system and display device using the system With respect to a display device having a high-resolution display panel, It makes possible to prevent to deteriorate the display quality by a dot defect. A display panel having a dot defect is identified and coordinates of the defective pixel are determined. The bri... | 05/30/2006 |
| 7036940 | Image processing system, projector, portable device, and image processing method In order to provide an image processing system, a projector, a portable device, and an image processing method that enable the correction of keystone distortion in the horizontal direction automatically and also appropriately, a remote controller operated by the vie... | 05/02/2006 |
| 7015982 | Video projection system A video projection system (50) comprises a rotary disc (31) having light guiding devices (35) extending radially thereof and in a helical configuration circumferentially at the disc (31) and corresponding in number to the number of lines ... | 03/21/2006 |
