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7607783 |
Imaging apparatus, image processing apparatus, image processing method of imaging apparatus and computer program
A document camera has an image processing apparatus, which acquires the contour of an image of an original by means of a Roberts filter. The image processing apparatus detects straight lines as...
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7553031 |
Projection image display apparatus and projection optical unit to be used therein
In a projection type image display apparatus, for enlarging an image on a image display apparatus 1 by means of a projection lens 2 , thereby projecting the enlarged image onto a screen 6 ,...
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7527383 |
Information processing system, information processing apparatus, and information processing method
An information processing system includes a projection unit that projects at least image data for calibration, an image data capturing unit that captures projection image data projected by the...
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7520620 |
Projector and projector control method
For a projector, a CPU references an exposure calculation object scope setting table stored in an exposure calculation object scope setting table storing unit, and sets the exposure calculation...
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7475995 |
Projector trapezoidal correction
A projector includes an image projecting section that is structured to project an image according to an input image, to a virtual projection plane arranged in a predetermined positional...
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7448756 |
Slim optical projection system and image display apparatus employing the same
A slim optical projection system and an image display apparatus employing the same. The optical projection system includes: a relay lens group to produce an intermediate image from an image created...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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....
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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...
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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...
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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...
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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...
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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...
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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...
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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 H D,P is determined between a display surface and a projector. The homography H D,P is decomposed into...
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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...
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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...
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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...
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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...
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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...
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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,...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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7029124 |
Distortion control for a seamless tile display system
A modular and scalable seamless tiled display apparatus includes multiple display devices, a screen, and multiple lens assemblies. Each display device is subdivided into multiple sections, and each...
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7004590 |
Production method for optical device, optical device produced by this method and projector provided with this optical device
In manufacturing an optical device having a plurality of optical modulators and a color combining optical system, optical properties of a projection optical system are acquired, reference positions...
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7001023 |
Method and system for calibrating projectors to arbitrarily shaped surfaces with discrete optical sensors mounted at the surfaces
A system determines correspondence between locations on a display surface and pixels in an output image of a projector. The display surface can have an arbitrary shape and pose. Locations of known...
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6999133 |
Digital correction module for video projector
Digital correction module for video projector where a correction module is provided to give a non-linear re-imaging of an image so that it is displayed correct on a non-ideal screen (curved screen)...
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6989872 |
Image distortion correcting device and image distortion correcting method
A write PLL circuit generates a write clock signal for writing a video signal into a line memory. A readout PLL circuit generates a read clock signal for reading out the video signal stored in the...
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6977693 |
Networked video projector apparatus and method of projecting a video frame on a video projector
A video projector including a network adapter, a microprocessor physically and electrically coupled to the network adapter, a graphics adapter physically and electrically coupled to the...
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6922295 |
Lens assembly with integrated focus mount and CRT coupler
A lens assembly adapted to be connected to a CRT and affixed to mounting structure in a projection television cabinet. The lens assembly includes a tubular lens mount having a longitudinal axis and...
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6817721 |
System and method for correcting projector non-uniformity
A system and method corrects the luminance non-uniformity of an image generating by a projector by generating a correction look-up table (LUT) for the projector. The projector receives input data...
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6795221 |
Scanned display with switched feeds and distortion correction
A display or image capture apparatus includes a scanning assembly that scans about two or more axes, typically in a raster pattern. A plurality of light sources emit light from spaced apart...
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6784947 |
Image display apparatus and method of correcting image on image display apparatus against inclination by terrestrial magnetism
An image display apparatus which employs a cathode ray tube displays, when an image displayed on a screen of the cathode ray tube is to be corrected against an inclination caused by the terrestrial...
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6753829 |
Projection image display apparatus
To change image quality in accordance with the image to be displayed, a color filter plate 3 is driven to sequentially split the white light incident on an A portion into red, blue, and green...
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6686973 |
Method and apparatus for automatically correcting projection display of projector
A method and apparatus for automatically correcting projection display of a projector. The disposition parameters including disposition distance (or horizontal inclination angle) and vertical...
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6642971 |
Image display apparatus, method of displaying images, image processing apparatus, and method of processing images
The technique of the present invention effectively relieves potential deterioration of the picture quality due to an interpolating process carried out simultaneously with a skipping process. When a...
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6618076 |
Method and apparatus for calibrating projector-camera system
The present invention enables a user to automatically calibrate a projector-camera system to recover the mapping from a given point in the source (pre-projection) image and its corresponding point...
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6603532 |
Illuminance measurement apparatus, exposure apparatus, and exposure method
An illuminance measurement apparatus of the present invention is comprised of a chassis ( 20 ) having a detection surface ( 22 ) formed with a light receiving aperture ( 21 ) and a light receiving...
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