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7621647 |
Optical projection system and method of use
Embodiments include a light engine to generate pixels and a number of lenses positioned to receive pixels from the light engine and to project the pixels on to a field with a higher angular pixel...
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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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7600876 |
Optical angle detection apparatus
In an optical angle detection apparatus, a single optical distance measurement unit is disposed opposite an object having a plane. The optical distance measurement unit includes a light projecting...
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7581839 |
Keystone correction derived from the parameters of projectors
A projector determines horizontal and vertical tilt angles. Using the tilt angles and the inherent properties of the projector, keystone correction corner points for the image can be computed. The...
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7562987 |
Complex mirror projection display
A rear projection display according to the present disclosure includes a complex mirror as an optical element to simplify the optical design. The mirror may be symmetrical about at least one axis...
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7562986 |
Laser projection display
Disclosed herein is a laser projection display. The laser projection display includes a light source for emitting light beams each having a predetermined wavelength, and reflective means for...
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7559658 |
Auto focus projector with short focus adjustment time
A projector comprising a light modulating device which modulates light beams emitted from a light source, according to image information, to form an optical image; a projection optical device, the...
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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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7549754 |
Distortion correction for projector
An image processing device for a projector including an image formation section that emits light of an image, and a projection system that projects the emitted light onto a projection surface. The...
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7537351 |
Image forming projection system and projector using input and output signals
A projection system includes a projector and a computer connected to the projector, wherein the projector projects an image according to an image information output from the computer. The projector...
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7537350 |
Image processing system, projector, program, information storage medium, and image processing method
A projector including: an image projection section for projecting an image onto a rectangular screen through a liquid crystal panel; a position adjustment information generation section for...
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7524070 |
Projection control system, projector and projection control method
A projector includes a projection angle deriving section which generates projection angle information indicating an angle formed by a projection target area and projection light projected onto the...
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7513628 |
Projection device with camera to provide for iterative adjustments
An apparatus, system, and method for a projection device having a camera to provide for adjustments based at least in part on a series of captured images are disclosed herein.
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7494229 |
Projector and processing line specification method
A projector of the invention includes: a projection lens that is movable in a direction substantially perpendicular to an optical axis to project and display an image on a projection object; an...
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7488079 |
System and method for projecting images onto a moving screen
A shaped screen rotates through one or more projected images of two or more projectors operating simultaneously, resulting in a dynamic, kinetic image surface which may be viewed equally well from...
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7478912 |
Image projector display device
An image projector display device projecting an image onto a surface substantially parallel to a path of light emitted through a representation of an image and a projection/objective lens. The...
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7475996 |
Elevating device
An elevating device includes first and second rack members interconnecting each other in such a manner to protrude downwardly from a lower opening of an outer casing in a double-step manner so as...
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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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7467769 |
Elevating mechanism
An elevating mechanism for a projection apparatus includes a base, a movable leg, an elastomer, a decelerating module and a fixing component. The base is connected with the projection apparatus and...
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7452084 |
Projector with a device for measuring angle of inclination
A projector includes a projection device, a cross line positional information acquiring device for acquiring positional information of a cross line between a projection surface of the projection...
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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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7441906 |
Keystone correction system and method
We describe a keystone correction system and method. A vertical scalar vertically scales an input image and stores the results to a line buffer. A horizontal scalar retrieves the stored results...
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7434937 |
Methods and systems for calibrating rear projection video
A video system includes a video projector located in a housing a display screen disposed adjacent to the housing, wherein the display screen is capable of being tilted to expose the video...
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7426804 |
Specialty display window
A window unit includes a window frame defining a frame perimeter and a window located within the frame perimeter. The window includes a display surface adapted to receive a display image. A display...
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7422331 |
Image processing system, projector, and image processing method
A projector includes an image distortion sensing section which generates image distortion sensing information, an environmental influence sensing section which generates environmental influence...
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7401929 |
Projector and image correction method
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...
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7399086 |
Image processing method and image processing device
For keystone correction of the perspective distortion of an image ( 18 ) projected onto a projection surface ( 12 ), an image existing in electronic form is processed by a processing device to...
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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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7370977 |
Optical projection system and image display device having the same
An optical projection system which creates pincushion distortion of an image and then creates a barrel distortion of the pincushion-distorted image to compensate for the pincushion distortion and...
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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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7360904 |
Projector, range finding method, and recording medium on which range finding method is recorded
A projector wherein chart images are stored in an image storing section, the chart images have range-finding light-dark patterns expressing particular shapes and also used as advertisements, the...
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7354161 |
Projector
A projection position adjuster ( 8 ) of a projector includes a fixing plate ( 81 ), a first moving plate ( 82 ) that can move in a Y-axis direction and an X-axis direction orthogonal to each other...
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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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7344253 |
Projector and method of projecting image from projector
A projector has an acceleration sensor for detecting a tilt angle of the projector, a manual controller for manually setting a correction amount for a keystone distortion correction, an auto/manual...
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7331678 |
Method and system for a thermal architecture and user adjustable keystone in a display device
A rear projection display device. The display device includes a screen and a base to which the screen is mounted. The base includes a plurality of vents to allow air to flow in and out of the base,...
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7303285 |
Projector and method of projecting projection image
A trapezoidal correction unit included in a projector positions a quadrangle p′q′r′s′ after correction within a quadrangle pqrs before correction, by using inclination angles v and h. In...
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7290887 |
Projector and projection method
The present invention is addresses to the conventional problem that when the distortion of a projected image that is obliquely projected onto a screen is corrected, an imaging device that is...
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7290886 |
Illuminating system and method for improving asymmetric projection
An illuminating system and method for improving asymmetric projection includes a light source producing a light beam to form a light path, a projection lens disposed in the light path, a light...
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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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7270421 |
Projector, projection method and storage medium in which projection method is stored
A projection system is provided which includes a projection lens and a spatial optical modulation device (SOM) for projecting an image in response to an inputted picture signal. A control unit...
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7262911 |
Reflex-type screen assembly
A reflex-type screen includes a base which has saw-tooth appearance, and an optical absorption layer on one edge of each saw-tooth of the base. The base consists of white resin and includes a...
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7252389 |
Projection optical system
A projection optical system is disclosed with which undistorted images can be obtained at any image position within a specification range, and whose projection angle can be changed. The projection...
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7252388 |
Projector with tilt-angle detecting capability
A projector includes two range sensors of a phase difference method. The range sensors are laid out near a projection lens in such a way that a line connecting the centers of two photo-sensor...
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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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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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7246908 |
Combination control for a projection device
A projection device is provided. In one embodiment, the projection device may include an optical system mounted within the projection device and having an optical system axis substantially parallel...
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7242818 |
Position and orientation sensing with a projector
A position and orientation of a projector are determined from projected images. First, a homography between a camera and a planar surface, where the relationship between the camera and planar...
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7237911 |
Image correction method for multi-projection system
Embodiments provide geometric consistency in overlapping areas when a tiling projection is performed where adjacent projection images have overlapping areas using a plurality of projectors....
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