Abstract: An image processing device includes a lens-shift amount acquisition section adapted to acquire an amount of shift of a projection lens of an image display apparatus, and an image signal correction section adapted to correct the image signal corresponding to a sub-pixel constituting a pixel in accordance with the amount of shift acquired by the lens-shift amount acquisition section.

Abstract: A projector includes a light source, a light modulator that modulates the light flux emitted from the light source in accordance with an image signal to form image light, a projection optical apparatus that enlarges and projects the image light, a reflection section having a reflection surface disposed along the direction in which the projection optical apparatus outputs the image light, the reflection surface reflecting the image light, and an adjustment section that adjusts the inclination angle of the reflection section with respect to the direction in which the image light travels.

Abstract: The present invention provides a projection system capable of making corrections to the shape of a projected light beam to take into account multiple irregularities in a projection surface. The invention also provides a projection system capable of adjusting the variation of intensity of a light beam projected on a projection surface that is not normal to the central axis of the projection beam.

Abstract: Image disturbance called speckle noise occurs when an image generator has a small effective screen size and a projection lens has a small effective diameter. The present invention is intended to reduce speckle noise. In an optical projector, a viewing angle enlarging ember (60) for enlarging viewing angle or a scattering member (28) for scattering image light is disposed near an image display device (18), such as a liquid crystal panel. Speckle noise can be reduced, suppressing the deterioration of resolution and contrast.

Abstract: The invention relates to a method and apparatus for projecting a panoramic image, according to the method, the steps include generating an image on an image generation surface, and then projecting the generated image on a projection surface to obtain a panoramic projected image, the points of the generated image being projected on the projection surface according to a non uniform distribution determined as a function of at least one parameter of a set comprising the shape of the generated image, the shape of the projection surface, and the position of an observation point of the projected image, in relation to the projection surface.

Abstract: A projection apparatus including a projection drive control unit modulating an emitted light from a light source unit for each of a plurality of color components at predetermined time, and a projection distance acquisition unit irradiating light to the projection screen to acquire a distance to the projection screen, wherein the projection distance acquisition unit carries out laser distance measurement during a period the projection drive control unit modulates a color component of the emitted light to color components except one color component of a plurality of modulated color components.

Abstract: An image processing device adapted to correct distortion of an image projected on a projection screen with projection light emitted from a projector includes a detection section adapted to detect at least one of display positions of a plurality of predetermined figures displayed in a correction image projected by the projector on the projection screen, the plurality of figures arranged at densities varying in accordance with an incident condition of projection light to the projection screen, a distortion correction information generation section adapted to generate distortion correction information based on the display position detected and correction image data representing the correction image, an acquisition section adapted to acquire image data representing the image to be projected on the projection screen, and a distortion correction section adapted to execute a distortion correction process using the distortion correction information on the image data acquired.

Abstract: There is provided a projected image display unit characterized by a display surface configured to display an image; projection means for projecting the image onto the display surface; and image capturing means for performing image capturing on the display surface, the image capturing means being placed on the same side of the display surface as the projection means, wherein the image capturing means is placed at a position so that the symmetrical position of the projection means with respect to the display surface is out of the range of the angle of view of the image capturing means.

Abstract: Systems and methods are provided for evaluating performance of a projector. An imaging screen is configured to produce an image of a pattern projected thereon. A camera is configured to capture and digitize the image of the pattern projected on the imaging screen. An image analyzer is configured to receive the digitized image from the camera and to analyze the received digitized image.

Abstract: A method includes generating a first plurality of meshes configured to map a first domain associated with a display surface to a second domain associated with an image capture device configured to capture a first image of the display surface, and generating a second plurality of meshes configured to map the second domain to a third domain associated with a first projector configured to display a second image onto the display surface. A third plurality of meshes is generated using the first plurality of meshes and the second plurality of meshes. The third plurality of meshes is configured to separately map a plurality of color bands between the first domain and the third domain.

Abstract: A projection-type display device includes a shielding unit and image signal correction units that divide the picture plane of the spatial light modulation element into a plurality of areas and perform correction on the image signal applied to the spatial light modulation element according to the current shielding amount of the shielding unit for each of the plurality of areas. Accordingly, appropriate uniformity correction is performed even when there is a change in the angular distribution of light emitted from the spatial light modulation element and reaching the screen.

Abstract: A projector comprises: a projector main frame having a memory for storing an image in form of data and a projection lens for projecting the image, in which the image stored in the memory is read and visualized, so that the visualized image is projected via the projection lens onto a screen; and a remote controller for performing a remote control of the projector main frame. The projector main frame has a remote controller mounting section for detachably mounting the remote controller at a position that the mounted remote controller covers the front of the projection lens of the projector main frame.

Abstract: An image transformation method to be implemented by a computer carries out an image transformation process, by transforming a picked up image that is picked up by a pickup unit having an optical axis tilted by an arbitrary angle with respect to a reference plane into an image substantially equivalent to a picked up image that is picked up by the pickup unit in a state where the optical axis of the pickup unit is perpendicular to the reference plane, and substituting luminance values of coordinates before the transformation as luminance values corresponding to coordinate values after the transformation.

Abstract: 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 projection optical device including a projection lens, which has a plurality of lenses, that enlarges and projects the optical image onto the screen; a focal position changing unit, to perform focus adjustment on the image; a setting input unit through which automatic adjustment information for changing the focal position to an in-focus position where the projected image is in an in-focus state is input; and a focus adjustment control unit which controls the focal position changing unit until the projected image is in the in-focus state.

Abstract: A projector is configured of a difference image generation section that generates a difference image between an all-white first calibration image and a second calibration image which includes an image having features at the center and periphery thereof, a center reference position detection section that detects a reference position of a center block area in the difference image, a peripheral reference position detection section that detects a reference position of a peripheral block area, and a projection area information generation section that generates projection area information indicating a position of a projection area, based on those reference positions.

Abstract: A system and method for reducing speckle and smearing phenomena caused by a coherent light source. The light beam from the coherent light source is preferably refracted by a rotating refractive element. The refracted beam is focused and projected through a light valve by a plurality of optical components. The rotation of the refractive element causes the beam to scroll across the surface of a light receiving element, which reduces the smearing effect. The rotation of the refractive element also causes the propagation path of the beam to vary, causing rays of the light beam to undergo relative phase shift, varying the interference pattern on the light receiving element, resulting in a reduction in the appearance of the speckle phenomenon.

Abstract: A projector includes a light source unit, a light source-side optical system for guiding light from the light source unit to a display device, the display device, a projection-side optical system for projecting an image emitted from the display device on to a screen, and a distance measuring system 1 and has a projector control unit for controlling the light source unit and the display device. In addition, the distance measuring system 1 has a laser beam emitter 2 for emitting a laser beam to a distance measurement target object, a receiving lens 4 for concentrating reflected light from the distance measurement target object and a receiving element 3 for receiving the reflected light from the distance measurement target object which has passed through the receiving lens 4, and optical axes of the receiving lens 4 and the receiving element 3 are made to be aligned with an optical axis of the emitted laser beam.

Abstract: A system and method for correcting optical distortion in an off-axis system is provided. The offset between the center of a display plane and the optical axis of the projection lens system is configured such that the offset is greater than half the vertical dimension of the display plane. In this manner, the distortion, such as a pincushion-type or barrel-type of distortion, is not symmetrical about the horizontal axis. In this scenario, the display plane, the projection lens system, a folding mirror, and/or the spatial light modulator may be tilted such that a keystone effect is induced. This keystone effect may be used to offset the distortion, particularly the pincushion-type or barrel-type of distortions.

Abstract: 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 generating position adjustment information based on position adjustment of the image made by a user; a correction information generation section for generating position correction information for correcting positions of four corners of the image on the screen based on the position adjustment information; and a correction section for correcting image information for projecting the image based on the position correction information.

Abstract: A system is provided for projecting a calibrated image. The system includes a projector to project an uncalibrated image. A processor-based digital image acquisition device is in communication with the projector and is disposed to acquire the projected, uncalibrated image. The device is also programmed to compensate for one or more parameters of viewing quality, and to communicate calibration information to the projector to project a first calibrated image.

Abstract: 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 projection unit, a specifying unit that specifies positions of points to be calibrated with the image data captured by the image data capturing unit, the positions of the points to be calibrated representing a shape of the image data for calibration, a calculation unit that calculates parameters to transform the positions of the points to be calibrated on to the positions of reference points, and a transformation unit that transforms the image data captured by the image data capturing unit with the parameters.

Abstract: A projector has a transmission time information reception unit for calculating the distances between a transmitter and first and second ultrasonic receivers based on reception times of ultrasonic and infrared pulses transmitted from a transmitter-equipped pointer rod for pointing to positions on a projection surface. The projector also has an image correcting information calculation unit, which, when a test pattern made up of a plurality of reference points including a plurality of points near the corners of the upper and lower edges of the projection surface is projected onto the projection surface, generates a coordinate transformation table to bring the coordinates of the reference points near the upper edge into conformity with the coordinates of corresponding desired corrective points, from the distance information acquired by the transmission time information reception unit through the transmitter-equipped pointer rod and positional information of the desired corrective points.

Abstract: A manufacturing apparatus for manufacturing a projection optical system has a plurality of optical modulators, a color-combining optical device and a projection optical device. The manufacturing apparatus positions each of the optical modulators relative to the color-combining optical device and at a back-focus position of the projection optical device. The back-focus position is determined by calculating a deviation amount of the optical path length of a light beam from the optical modulator to the projection optical device based on the external dimensions of the color-combining optical device when the color-combining optical device is interposed between the optical modulator and the projection optical device.

Abstract: 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 object scope based on a zoom volume detected by a zoom volume detector. An exposure calculation object scope for each zoom volume is stipulated in the exposure calculation object scope setting table. Next, an imaging control unit images an adjustment pattern image projected onto a screen by a CCD module, and calculates an exposure calculation value for the set exposure calculation object scope. Then, the imaging control unit controls at least one item among the shutter speed, gain, and aperture for the imaging unit to perform exposure adjustment so that the exposure calculation value is about equal to a specified exposure target value.

Abstract: A projector is configured of a difference image generation section that generates a difference image between an all-white first calibration image and a second calibration image which includes an image having features at the center and periphery thereof, a center reference position detection section that detects a reference position of a center block area in the difference image, a peripheral reference position detection section that detects a reference position of a peripheral block area, and a projection area information generation section that generates projection area information indicating a position of a projection area, based on those reference positions.

Abstract: An interactive image projecting device that projects an image onto a display surface and controls the projected image based upon movement of the image projecting device or the detection of another image. The image projecting device includes a projector that generates an image from a control unit. The device includes a position indicating emitter that generates a position indicator and an image sensor that is operable to detect the position indicator from either the device including the image sensor or a position indicator from another device. Based upon the sensed position indicator from another device, the control unit operates to modify the image projected from the device such that the image from a first device can interact with an image from a second device. The first and second devices each have a wireless transceiver such that the devices can communicate with each other during operation.

Abstract: A projection system includes a vibration controlling structure. The projection system includes an imaging unit mounted to a movable platform via a partially compliant mount structure, such that the imaging unit is partially isolated from the platform while projecting an image which is stable with respect to the platform. The imaging unit and partially compliant mounting structures are constructed and arranged to damp vibrational forces on the imaging unit.

Abstract: A projector assembly includes a multi-pixel frame projector that sequentially projects each pixel making up a frame to a viewing surface, a movement detector coupled to the projector to detect a physical movement of the projector, and a movement compensator coupled to the projector, the movement compensator operable to transmit a correction signal to the projector, the correction signal capable of causing the projector to compensate for the detected movement.

Abstract: An optical projection system includes an image generation element, a projection lens set for receiving an image from the image generation element, refracting the image and projecting the image out, and a reflector for reflecting the image from the projection lens set and projecting the image to a screen. The projection lens set includes an aspherical lens with a distortion coefficient larger than 0.5 for producing a pincushion distortion of the image and several other lenses, and the absolute value of the sum of the distortion coefficients of the other lenses are less than the distortion coefficient of the aspherical lens. The reflector produces a barrel distortion to the image for compensating a pincushion distortion of the image produced by the projection lens set.

Abstract: There are provided a small distance measuring device which enables an accurate distance measurement and has a wide range of measurable distances and a projector which is provided with the distance measuring device.

Abstract: A beam projection apparatus and method with automatic image adjustment. A beam projection apparatus includes an actuator module being operable to move the beam projection apparatus, a beam projector being operable to project images, and a control module being operable to search surrounding structures around the beam projection apparatus and select a plane portion of the surrounding structures as a screen, to control the actuator module to move the beam projection apparatus for image display on the selected plane portion, and to control the beam projector to project the images on the selected plane portion.

Abstract: 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 imaging structure that photographs an area including at least the projected image on the projection object to take a photographed image; a shift level detection unit that detects a shift level of the projection lens; a control module that specifies a reference line to be processed in the photographed image; and a storage unit that stores a map of positional information to each shift level, where the positional information represents an expected relative line position to the projected image included in the photographed image.

Abstract: A portable projection display apparatus (100) of the present invention comprises: a projection device (8) including an image forming means (2) for forming image light and an optical lens system (7) which projects the image light, obtained by the image forming means, toward a projection surface (S1); a swinging detecting means (12) for detecting a relative swinging of the projection device (8) with respect to the projection surface (S1); and a correcting means (11) for correcting a projection direction of the image light with respect to the projection surface (S1) in the projection device (8) in accordance with an output value of the swinging detecting means (12), so as to cancel a movement of the image light in the projection direction that is caused by the swinging.

Abstract: According to one embodiment, a projection display device comprises a light modulator configured to receive light from a light source and emit an optical image modulated based on an image signal, a projector configured to project the optical image emitted from the light modulator onto a screen, and a correction unit configured to correct a distortion of the optical image which is projected onto the screen with an optical axis of the projector being not perpendicular to the screen, wherein the correction unit corrects the optical image which is projected onto the screen so that a shape of the optical image becomes a rectangle and any one of boundary sides of a rectangular optical image is aligned with a long boundary side of a trapezoidal projectable area of the projector.

Abstract: A projector including: an adjustment section which generates edit image information for projecting an edit image including a content image based on input image information and a position change detection image at least partially provided outside the content image; a sensing section which senses a screen onto which the edit image is projected and generates sensing information indicating a sensed image; a projection section which projects the edit image based on the edit image information; and a determination section which determines whether or not a relative position between the projection section and the screen has changed based on the sensing information.

Abstract: An appropriate adjustment can be made on the basis of a gradation amplitude obtained from a photographing image even when the zoom position of a zoom lens is changed. According to exemplary embodiments a CPU obtains a zoom amount transmitted from a zoom lens position detecting section, and derives the width of a stripe element in a pattern image to be formed on a liquid crystal light valve on the basis of the obtained zoom amount by referring to a stripe element width table stored to a stripe element width table storing section. The CPU corrects the pattern image for an adjustment on the basis of the derived stripe element width and rewrites the contents of a pattern image memory and gives instructions of image projection to an image processing section, a liquid crystal light valve driving section, etc. Thus, the pattern image corrected with respect to the stripe element width is formed on the liquid crystal light valve.

Abstract: An image combining viewer transmits a daylight image directly through the viewer, while reflecting at least one wavelength other than visible light towards a sensor. A display for displaying the image received by the sensor in a visible wavelength is reflected by the back surface of the mirror back along the optical path, combining the displayed image with the daylight image so that they appear to be a single image.

Abstract: 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 relationship therewith, an imaged-information generating section that has an output-image taking section to take an output image projected to a real projection plane and outputs imaged information containing lightness information having a correlation to a lightness in accordance with an image taken, and a distortion correcting section that corrects a distortion, in an output image for the input images, caused by an inclination of between the virtual and real projection planes, according to the imaged information.

Abstract: A multi-projection display includes a plurality of projector units each including a light source, an electrooptic modulator, and a projection system. The multi-projection display displays an image on a projection screen by tiling projection using the plurality of projector units. Each of the projector units further includes a light-quantity controller that controls the quantity of light to be projected from the projection system.

Abstract: A projection display having a projection path through a shaped mirror positioned perpendicular with the screen. The shaped mirror positioned on a projection path reduces the depth of the projection display while eliminating image distortion at the center of the screen.

Abstract: An image geometric correction device 6 unifies the coordinate systems of images captured by image capturing devices 4-1 and 4-2 into a coordinate system, and makes a geometric correction to the images projected by image projection devices 1-1, 1-2, and 1-3 on the basis of an image projection region E in the coordinate system into which the coordinate systems of the captured images are unified. As a result, the image geometric correction device can make a geometric correction to the projected images without strictly placing the image capturing devices 4-1 and 4-2 at predetermined positions.

Abstract: To provide an image processing system and the like which can correct a distortion of a projected image through only a single sensor, a projector has a calibration image information generating section which generates image information used to display a rectangular calibration image; an image projection section which projects the calibration image onto a projection target, based on the image information; a sensing section which senses a region including the projected calibration image plane and generates sensing information; a projection area information generating section which generates shortest-distance projection area information based on the sensing information in such a state that a distance between the projection section and the projection target is different from the distance in an actual operating condition, and generates actual projection area information based on the sensing information in the actual operating condition; and a correction information generating section which generates image distortion

Abstract: A method for projecting an image with a projection system includes zooming a projected image in accordance with a resolution of the image, when a resolution of the image is less than a resolution corresponding to the projection system. A projection system for projecting an image based on a received video signal including optics having a corresponding resolution and a zoom control controlling a zoom of the optics. If a resolution of the image of the video signal is less than the resolution corresponding to the optics, the zoom control zooms a projected image.

Abstract: A system and a method for correcting chromatic aberrations of a color image composed of a plurality of digitized color planes. The color image is assumed to have been produced by an optical system. According to the system and method, geometric anomalies of the digitized color planes are modeled and corrected, at least partly, in such a way to obtain corrected digitized color planes. The corrected digitized color planes are then combined to obtain a color image corrected completely or partly for the chromatic aberrations. The system and method are applicable to photographic or video image processing, in optical devices, industrial controls, robotics, metrology, etc.

Abstract: The present invention relates to a distortion detecting system and a distortion detecting method having a structure for efficiently detecting distortion of a projected image that is projected onto a projected surface by a projector. The distortion detecting system includes a photodetecting apparatus, and an analyzing apparatus. When a reference brightness image is projected onto the projected surface by the projector, the photodetecting apparatus forms the projected image on the projected surface onto the photosensitive surface of the photodetector, and outputs light intensity profile data that indicates a one-dimensional distribution of incident light intensity in each of a first direction and a second direction on an image for inspection formed on the photosensitive surface.

Abstract: An image processing system and a projector project a calibration image onto a projection target, sense the calibration image to generate sensing information, and generate projection target region information based on the sensing information. The system and projector generate projection area information based on the sensing information, image distortion correction information based on the projection target region information and the projection area information, and correct an image signal based on the image distortion correction information so that image distortion is corrected.

Abstract: An external light-shielding layer capable of enhancing a visible light transmittance and a contrast ratio and preventing Moiré fringe and Newton ring phenomena, a display filter including the external light-shielding layer, and a display device including the display filter. The external light-shielding layer includes a transparent resin matrix, and a plurality of light-shielding patterns formed on the transparent resin matrix and spaced apart from each other in a predetermined interval, wherein a bias angle (?) formed between a traveling direction of the light-shielding patterns and the longer side of the matrix is in a range of about 5 to 80 degrees.

Abstract: In a back-projection image display device, image light outputted from a projection device is reflected by a reflection mirror held by a base frame and projected onto the back of a screen, to display an image on the screen. An image distortion correcting mechanism includes adjustment mechanisms that deform the reflection mirror, drive units that generate driving force necessary for the deformation of the reflection mirror by the adjustment mechanisms, and a control substrate that supplies power to the drive units. The control substrate supplies power to the drive units in response to a control signal supplied from a remote control unit. This allows pin distortion and barrel distortion, as well as trapezial distortion to be corrected by remote control in the back-projection image display device.

Abstract: A projection lens unit and a projection mirror unit are moved relative to an illumination optical system, between a first position where an image is projected in a shape that is longer along a direction of projection onto a projection plane and a second position where an image is projected in a shape that is longer along a direction perpendicular to the direction of projection onto the projection plane. When the projection lens unit and the projection mirror unit are located in the first position, a vertically long image is projected onto the projection plane (portrait display). In this state, when the projection lens unit and the projection mirror unit are moved to the second position, a horizontally long image is projected onto the projection plane (landscape display).

Abstract: Disclosed herein is a display device using a single-panel diffractive light modulator. The display device includes a light source unit, a condensing unit, an illumination unit, a diffractive light modulator, a projection unit, a filter unit, and a distortion correcting means.