Abstract: A multimedia player for providing clear projection image includes; a projection unit displaying a projection image; a screen sensing unit sensing a color of a display plane on which the projection image will be displayed; and a virtual input unit for detecting and providing coordinates of a position being touched on the projection image, wherein a driving unit of the projection unit controls a focal length of a projection lens unit based on a projection image being captured by the screen sensing unit.

Abstract: A projector includes: an imaging unit that picks up an image of a projection target area with light in a first wavelength band and generates a first pickup image and picks up an image of the projection target area with light in a second wavelength band and generates a second pickup image; an image generating unit that performs keystone distortion correction on the basis of the first pickup image; a positional-information generating unit that generates, on the basis of the second pickup image, positional information indicating a position of indication light included in the projection target area; and a projecting unit that projects an image based on the positional information in a state in which the keystone distortion correction is performed.

Abstract: It is an object to provide a mobile electronic device with high operability and high safety. The mobile electronic device includes an image projector that projects an image, a control unit that controls the operation of the image projector, a cabinet that holds the image projector and the control unit, and an acceleration sensor that detects an acceleration acting on the cabinet. The object is achieved in such a manner that when an acceleration of a given value or more is detected by the acceleration sensor, the control unit stops emission of light from the image projector or reduces an amount of light emitted from the image projector.

Abstract: An image projection device for displaying an image onto a remote surface. The image projection device employs a scanner to project image beams of visible light and tracer beams of light onto a remote surface to form a display of the image. The device also employs a light detector to sense at least the reflections of light from the tracer beam pulses incident on the remote surface. The device employs the sensed tracer beam light pulses to predict the trajectory of subsequent image beam light pulses and tracer beam light pulses that form a display of the image on the remote surface in a pseudo random pattern. The trajectory of the projected image beam light pulses can be predicted so that the image is displayed from a point of view that can be selected by, or automatically adjusted for, a viewer of the displayed image.

Abstract: An image display apparatus detects a projection angle of a projection unit that projects a screen image on a screen and is capable of vertically changing the projection angle, and corrects trapezoidal distortion of the screen image according to the projection angle. The image display apparatus changes the amount and direction of trapezoidal distortion correction based on the projection angle. The image display apparatus also determines whether a projection mode is projection upward to a wall or projection to a ceiling and changes the direction of trapezoidal distortion correction for projection upward to the wall and projection to the ceiling. Specifically, for projection upward to the wall, a correction factor is positive and an upper edge portion of the screen image is compressed for correction; and for projection to the ceiling, a correction factor is negative and a lower edge portion of the screen image is compressed for correction.

Abstract: A projector producing an imaginary input plane with high operability is provided. A projector according to an embodiment projects a VUI screen picture onto a desk, and projects a main projection screen picture to a wall. The projector includes a light receiving element. The light receiving element is arranged in a position where light emitted toward the desk (VUI screen picture) and reflected (or scattered) by an object near the desk enters. The projector calculates a position of the object based on light sensing timing by the light receiving element and light scan positions at various points in time. The projector changes a projected screen picture when it determines that object is simultaneously in contact with a plurality of portions of the VUI screen picture and at least one of contact positions moves.

Abstract: Provided is a system for adjusting an image of a beam projector using a camera attached remote controller and a method thereof. The system for adjusting images of a beam projector according to the present invention includes: a remote controller photographing test images projected on a screen and detecting pattern images from the photographed test images and generating control information including at least one parameter necessary to adjust the images through the detected pattern images; and a beam projector receiving the control information for adjusting images from the remote controller and adjusting the input image by using parameters included in the received control information and outputting them to the screen. Therefore, the present invention adjusts colors and geometrical shapes of images at a user's viewpoint, thereby making it possible to improve the satisfaction of user and implement the system in various forms.

Abstract: There is provided an image output device including a projectable region calculating unit that calculates a projectable region which is a region on a screen in which laser beam is projectable based on a trajectory in which scanning with the laser beam is performed using information specifying the screen onto which an image is projected by two-dimensional scanning with the laser beam, a projection window setting unit that causes the laser beam to be emitted and sets a projection window serving as a range in which the image is projected in the projectable region, and a generating unit that generates a pixel value of each of positions corresponding to pixels included in the image within the projection window on the screen for each pixel in a manner that the image is projected in the range set by the projection window.

Abstract: An underwater projection system, a controller and method of controlling are herein described. The controller providing, at least in part, a boundary setting module or methodology and/or an image correction module or methodology through a user interface for the underwater projection system. A user interface is provided to enable user control and input and adjustment of the image controller from an observation point outside of the media of the underwater projection system, while the adjustments are made in-situ. An optional automated edge or edge and surface detection system is also contemplated to assist in boundary detection within the water feature for the underwater image projection system.

Abstract: An image processing device is capable of suppressing the influence of the direction in which the image is projected on the projection surface to thereby improve the accuracy of the focus adjustment. The image processing device includes a detection section adapted to detect information regarding a direction in which an adjusting image for adjusting focus of an image to be projected on a projection surface is projected on the projection surface, and an adjusting image acquisition section adapted to obtain the adjusting image different in accordance with the information regarding the direction detected by the detection section.

Abstract: A projection lens for projecting images with high degrees of image offset while limiting the physical offset of the projection lens elements. The projection lens arrangement limits the displacement of the optical elements relative to the optical axis of the display panel and enables a very thin, efficient projector.

Abstract: Devices and techniques are described for automatically calibrating a projector system. The projector system undergoing calibration is coupled to a computing device and an automated positioning platform coupled to a target structure. The computing device acquires images using a calibrated camera of one or more patterns projected by the projector onto the target structure when the target structure is in a plurality of repeatable poses. From these acquired images, intrinsic projector parameters may be determined. Once determined, the parameters may be used to correct images produced by the projector or acquired by the camera which include a projected pattern or portion thereof.

Abstract: An image projection apparatus comprises a projection unit configured to project an image onto a projection plane, a correction unit configured to correct a range of the image projected by the projection unit, a deformation unit configured to deform the projected range of the image according to a designated correction point, and a control unit configured to optically change the projected range of the image projected by the projection unit according to a designation of an outside of a predetermined range as the correction point.

Abstract: A projection apparatus that provides flicker reduction according to the cause of flicker, to thereby properly reduce flicker without unnecessarily bringing about characteristic degradation is disclosed. Light for projecting a projection image onto a projection surface is output from a light source, and separated into light beams of a plurality of colors. Images corresponding to the light beams of the plurality of colors are formed on display units. The light beams of the plurality of colors having passed through the display units are synthesized and projected onto the projection surface. Fluctuations in the light quantity of the light beams of the plurality of colors having passed through the display units and yet to be input to the color synthesis unit are detected. Detection results are analyzed, and it is determined whether flicker caused by the display units or flicker caused by the light source is occurring in the projection image.

Abstract: The present disclosure relates to methods and systems that may be configured to facilitate projection. For example, in some embodiments, a system includes circuitry for receiving, at one or more server apparatuses, signals associated with changes in features of one or more projection surfaces, the signals to include information that at least a first projection surface is configured to facilitate capture of content that is projected onto the at least the first projection surface and is further configured to facilitate at least one of printing the captured content, saving the captured content to memory, or transmitting the captured content over one or more networks; circuitry for transmitting, from the one or more server apparatuses to one or more projector apparatuses, signals associated with one or more changes in one or more conformations of the one or more projection surfaces.

Abstract: A projector including: a light source; a light modulation device modulating a light emitted from the light source in accordance with an image signal for each of colored lights for color display; a projection optical system projecting each of the colored lights modulated by the light modulation device; an operation accepting section; a registration adjustment section performing correction of the image signal corresponding to each of the colored lights based on an operation accepted by the operation accepting section so that a displacement occurring in at least one of a horizontal direction and a vertical direction in a projection screen between the colored lights is reduced, and supply the light modulation device with the image signal corrected if the displacement occurs; and a correction direction display control section displaying a correction direction, in which the correction of the image signal is performed, as an icon indicating a direction.

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 display apparatus is provided which, when projecting a video onto a curved surface of an object for display, can realize an undistorted display of the video. The measuring means outputs the distance information representing the distance to the object. Based on the distance information produced by the measuring means, the curved surface contour is detected with high precision. According to at least the detected curved surface contour distortions, pixels of the display image are unevenly rearranged to correct the video information before it is output. This arrangement realizes an undistorted display of video when the video is projected onto the curved surface of the object.

Abstract: A projection lens includes a first image system, a second image system, and a concave reflector arranged in order. The first image system and the second image system define an optical axis, and the concave reflector is disposed at a first side of the optical axis. A projection apparatus using the projection lens is also provided, wherein the first image system is disposed between a light valve of the projection apparatus and the second image system, and the light valve is disposed at the first side of the optical axis.

Abstract: An area projection system for reproducing a visual signal on a surface, comprising a light source, a fiber element comprising a plurality of light guide elements, a carrier element and imaging optics, wherein the fiber element comprises a first end and a second end, wherein the first end of the fiber element is arranged on the light source and the second end of the fiber element is arranged on the carrier element, wherein the imaging optics are arranged on the second end of the fiber element, wherein the area projection system is adapted to transmit a visual signal from the light source to the fiber element and subsequently to the imaging optics, and wherein the imaging optics are adapted to reproduce the visual signal on a surface.

Abstract: A second projector projects and displays a measurement pattern on a projection screen while a first projector projects and displays another measurement pattern on the projection screen. The second projector causes an imaging unit to acquire a captured image including projection images of the two measurement patterns are captured, and detects coordinates of measurement points which are represented in the measurement patterns from the captured image. The second projector corrects the projection target image based on the coordinates such that the projection image by the first projector and its own projection image are in a desired relationship.

Abstract: A projection system performs projection on a projection surface using a plurality of projectors including a first projector and a second projector. The projection system projects, using the first projector, a first guide in a position a predetermined amount of a margin spaced apart from a border of a projection region where an image is projected and projects, using the second projector, a second guide distinguishable from the first guide.

Abstract: A reprojection system which allows a projection to be displayed onto a display screen, and reprojected by that display screen. The display is received on the surface that itself displays, and it is then redisplayed on the surface. The redisplay can be at the same size or at a different size as the original projection. Preferably the redisplay is at the same relative intensity but a brighter actual intensity than the original display. The information is can be received and redisplayed in a number of different ways.

Abstract: Disclosed is a method for correcting color in a portable image projector in consideration of an effect of a background color when the portable image projector projects images. The method corrects the effect of the background color to be projected, using color constancy technique, and thereby represents high-quality image which can be projected on a white screen. The method includes the steps of determining if a background color exists on a projection screen using a portable camera, converting the size of a mask image in order to connect a spatial position of an original image and an image photographed by a camera, correcting brightness of the mask image in order to correct non-homogeneity of the brightness of the projected image due to the distribution of different brightness values of the background color, and correcting the background color in order to correct color distortion of the image projected in different colors on the background color.

Abstract: Disclosed is a method for reducing speckling in liquid crystal displays with coherent illumination. The method consists of providing a liquid-crystal display illuminated, e.g., with a laser light, in which the image is formed by passing the light through the light redirecting holographic elements arranged in a matrix pattern, then changing the direction of the beams emitted from the holographic elements by passing the emitted beams through the polarization-changing liquid crystal elements, and converting the image-carrying beams produced by the liquid crystal elements into a visible image by passing them to a viewer through a polarization analyzer.

Abstract: A six group projection zoom lens downsized with broadened angle of view while aberrations are satisfactorily corrected over the entire zoom range, including a negative lens group having a negative power, a second lens group having a positive power, a third lens group having a positive power, a fourth lens group having a negative power, a fifth lens group having a positive power, and a sixth lens group having a positive power in this order from the magnification side and is configured telecentric on the reduction side. The first and sixth lens groups are fixed while the second to fifth lens groups are moved independently of each other at the time of zooming. The fifth lens group includes a plurality of lenses and a biconvex lens is disposed on the most magnification side. The projection zoom lens satisfies conditional expressions (1): (R51a+R51b)/(R51a?R51b)?0 and (2): 25.0<?d51<45.0.

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: An elevating mechanism for a projection apparatus includes a bottom cover, a resetting element having a first elastic member, a sliding mount, a screw stud sleeve, a screw stud, and a second elastic member. The sliding mount is disposed on a first side of the bottom cover and leans against the resetting element, and the sliding mount has an opening, at least one slot and a thread structure. The screw stud sleeve has a plurality of engaging teeth engaging within the slot. The screw stud has a thread structure and the thread structure of the screw stud meshes with the thread structure of the sliding mount.

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: An image processing apparatus includes: an image information input unit which receives input of first image information; and a sharpness adjustment unit which divides a screen image corresponding to the first image information into a plurality of areas and performs a sharpness adjustment for each of the divided areas to output second image information.

Abstract: A method corrects trapezoid distortion of projected images using a projector. The projector includes a projection lens, a driver device, an image capturing device, and a storage system. A rectangular picture is read from the storage system and projected on a projection area by the projection lens. The method controls the image capturing device to capture an image from the projection area when the projection lens increases one trapezoid row correction grade, and corrects each trapezoid row of the captured image if the captured image has trapezoid rows. The method further controls the image capturing device to capture an image from the projection area when the projection lens increases one trapezoid column correction grade, and corrects each trapezoid column of the captured image if the captured image has trapezoid columns.

Abstract: Methods, apparatuses and systems to receive, via at least one sensor device, data related to an area around the at least one sensor device. A target area around the sensor device to project an interactive display space via a projector is determined based, at least in part, on the data received from the at least one sensor device. The target area will include a projected interactive display space wherein interactions and objects within the projected interactive display space are to be processed via a computing device operatively coupled to the at least one sensor device.

Abstract: Based on image data input to a display unit and an image on a display surface acquired by an acquisition unit, control is performed to decrease the difference between the input image data and the image displayed on the display surface.

Abstract: A projector includes a projecting portion, an image data producing portion, an angular velocity sensor, and a control portion. The projecting portion projects an image based on input image data. The image data producing portion produces the image data and then outputs the image data to the projecting portion. The angular velocity sensor detects angular velocity and is longitudinally arranged in a longitudinal direction that is different than a horizontal direction and a vertical direction of the front panel and configured to determine angular velocity in a direction of rotation about the longitudinal direction of the angular velocity sensor to determine movement of the projector in at least one of in the horizontal direction and the vertical direction. If the angular velocity is detected by the angular velocity sensor, the control portion controls the image data producing portion so as to adjust the image data.

Abstract: An apparatus and method are disclosed for dynamic keystone correction. A measurement module measures distances from a projector to each of at least three projected points of a first projected image projected on a first surface with projection angles between each projected point. The at least three projected points are endpoints for at least two vectors with a target ratio of vector lengths. An adjustment module calculates an actual ratio of actual vector lengths of the at least two vectors. The adjustment module further adjusts a first aspect ratio of first projected image until the actual ratio is equivalent to the target ratio.

Abstract: A micro-projection system for projecting light on a projection surface (104), comprising: at least one coherent light source (101); optical elements (102, 108, 109) in the optical path between said coherent light source and said projection surface; said optical elements including at least one reflective member (102) actuated by a drive signal for deviating light from said light source so as to scan a projected image onto said projecting surface; said optical elements including at least one pixel displacement unit (106) for providing a displacement signal synchronized with the image scanning signal so as to reduce speckle onto said projecting surface. The corresponding method for reducing speckle is also provided.

Abstract: A display module includes a plurality of light sources that emit light toward a display panel having a screen with a first aspect ratio. An image with a second aspect ratio different from the first aspect ratio is displayed in the first region and not in the second region, and one or more light sources corresponding to the second region are selectively turned off so that luminance of the first region is different from luminance of a second region.

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 remote communication apparatus for receiving the image of a remote user captured by an imaging device to show the image to another user includes a zoom controller for controlling a zoom ratio defining the angle of view of the imaging device, and an estimator for estimating a distance between the imaging device and the remote user on the basis of the zoom ratio of the imaging device.

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: A system for projecting content onto a shaped screen. The system includes a projector configured for projecting content having a particular shape and a rear projection screen with an optically active light redirecting film, such as Fresnel lenses, for receiving and displaying the projected content. The rear projection screen and the optically active light redirecting film each have a shape substantially conforming to the particular shape of the content. The optically active light redirecting film, such as a Fresnel lens sheet, provides for brightness uniformity and a wide view angle. The rear projection screen can include a turning film for displaying content received from the projector at an angle.

Abstract: An image projector includes a pattern image generator generating image data of a pattern image which specifies a position of a grid point by a flat portion as an intermediate tone level of a background image, a high tone portion higher than the intermediate tone level and a low tone portion lower than the intermediate tone level; a projection device projecting the pattern image on a screen; an image for correction input device inputting an imaged image for correction; a geometric distortion detector detecting geometric distortion information of the grid point which divides the imaged image for correction into blocks based on an imaged image for correction where the pattern image projected on the screen has been imaged and inputted by the image for correction input device; and a geometric distortion corrector correcting geometric distortion of a projected image projected on the screen based on the geometric distortion information.

Abstract: A scanning projector includes a MEMS device with a scanning mirror that sweeps a light beam in two dimensions. A laser limit comparison circuit determines a metric from measured peak scan angles and measured light output. The metric is compared to a threshold and a light source is shut down when the metric exceeds the threshold.

Abstract: A CPU generates an image by performing inverse projection transformation for an input image by using an inverse matrix of a matrix which enlarges a size of the input image. When a position A on the input image is transformed into a position B on the generated image by the inverse projection transformation, the CPU obtains a ratio of a distance between pixels around the position B to a distance between pixels around the position A. The CPU calculates filter coefficients for a low-pass filter using a product of a Nyquist frequency of the input image and the ratio as a cutoff frequency. The CPU obtains a sum of results obtained by multiplying pixel values of pixels in a pixel array including the position A in the input image by the filter coefficients, as a pixel value at the position A in an image having undergone filter processing.

Abstract: A projector that projects an image to a projection object using light emitted from a light source lamp, including a light adjustment sensor that measures the projection distance to the projection object and the intensity of reflected light from the projection object; a zoom position sensor that detects a zoom ratio; and a control section that adjusts the intensity of light emitted from the light source lamp based on the projection distance and the reflected light intensity measured by the adjustment sensor and the zoom ratio detected by the zoom position sensor so as to keep the luminance of a projection image displayed on the projection object constant.

Abstract: An image projection system (103) includes an image projector (104) and an image orientation device (106). The image orientation device (106) can be configured to cause a reference line (110) associated with an image (108) to remain aligned in a predetermined orientation on a projection surface (109) regardless of projection system motion. A second image orientation device (206) can be included as well. The second image orientation device (206) can be configured to cause portions of an image (208) to move with projection system motion while a reference line (210) remains stable.

Abstract: A coordinate detection system can comprise a display screen, a touch surface corresponding the top of the display screen or a material positioned above the screen and defining a touch area, at least one camera outside the touch area and configured to capture an image of space above the touch surface, and a processor executing program code to identify whether an object interferes with the light from the light source projected through the touch surface based on the image captured by the at least one camera. The processor can be configured to carry out a calibration routine utilizing a single touch point in order to determine a plane corresponding to the touch surface by using mirror images of the features adjacent the touch surface, images of the features, and/or based on the touch point and a normal to the reflective plane defined by an image of the object and its mirror image.

Abstract: A projection display device includes an optical modulation element configured to modulate light outputting from a light source, and a projection unit configured to project light modulated by the optical modulation element on a projection screen. The projection display device includes an element control unit that controls the optical modulation element to display a test pattern image, an acquiring unit that acquires an image obtained by capturing the test pattern image from an image capture element that captures the test pattern image projected on the projection screen, and an adjusting unit that adjusts an image projected on the projection screen on the basis of the capture image acquired by the acquiring unit. The element control unit controls the optical modulation element such that a guidance image that guides focus adjustment of the image projected on the projection screen is displayed.

Abstract: A projection unit comprising a coherent light source such as a laser diode and a beam shaping element forming a light beam which is directed towards a display, characterized in that it comprises a laser speckle suppression device which is positioned between the laser source and the display and wherein the laser speckle suppression device is a diffusing element actuated randomly by a piezoelectric vibrating structure.

Abstract: A rear-projection type display device has a projection device, a transmission type screen, a housing, and input means. The projection device projects a light from a light source, as an optical image. The optical image is projected to the transmission type screen. The housing accommodates the projection device and the transmission type screen. A user operation is inputted to the input means. The rear-projection type display device includes a storage section, a distortion amount detection section, a correction amount calculation section, and a correction section. The storage section stores a distortion detection image to be displayed on the transmission type screen.