Raster Shape Distortion Patents (Class 348/746)
  • Patent number: 11962946
    Abstract: There is provided with an image processing apparatus that generates a display image to be displayed in a display system including a display area. An obtaining unit obtains one input image acquired through shooting by one image capturing apparatus. A generating unit generates the display image from the input image on the basis of a correspondence between a first projection plane corresponding to the input image and a second projection plane corresponding to the display area.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: April 16, 2024
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masatoshi Ishii
  • Patent number: 11893957
    Abstract: An image system dynamically updates drive sequences in an image system. Drive sequences are image display settings or display driving characteristics with which a display is operated. The image system may determine the drive sequence at least partially based on input from one or more sensors. For example, the image system may include sensors such as an inertial measurement unit, a light sensor, a camera, a temperature sensor, or other sensors from which sensor data may be collected. The image system may analyze the sensor data to calculate drive sequence settings or to select a drive sequence from a number of predetermined drive sequences. Displaying image content on a display includes providing the display with image data and includes operating the display with various drive sequences.
    Type: Grant
    Filed: January 17, 2023
    Date of Patent: February 6, 2024
    Assignee: Snap Inc.
    Inventors: Andrew Iverson, Howard V. Goetz, Glen R. Sands, Kevin Ferguson
  • Patent number: 11850499
    Abstract: According to an augmented reality based interactive sports device using a LiDAR sensor proposed in the present invention, it is possible to allow enjoying sports indoors only with the user's body without requiring a user to wear a separate object or device by projecting an image for sports content on the floor and tracking a user motion of the sports content using the LiDAR sensor to control the interaction between the sports content and the user, allow using the floor surface efficiently due to wide range of motion tracking, and allow quickly and accurately tracking a motion of each user by tracking a user motion using two LiDAR sensors even when multiple users are using sports content at the same time.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: December 26, 2023
    Assignee: TWOHANDSINTERACTIVE CO., LTD.
    Inventor: Wangyun Yoo
  • Patent number: 11652968
    Abstract: A method for implementing a synchronous rising, falling, or translation of a projection image along with the movement of a rollable screen is provided. After a system is powered on and started, a projection screen first reports a current position of a screen to a project host via a communication link. The projection host performs a preprocessing on a projection image according to the current screen position n0 obtained from the projection screen and an image is projected onto the projection screen. The projection host informs the projection screen via the communication link and confirms that the current projection image is aligned according to the current position of the projection screen. After the projection screen obtains confirmation information from the projection host, the projection screen is driven to reach the next position, and the projection host obtains the next specific position of the projection screen via the communication link.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: May 16, 2023
    Assignee: JIANGSU SHUNHE INTERNET OF THINGS TECHNOLOGY CO., LTD.
    Inventors: Chunguang Bi, Yuehua Shi
  • Patent number: 10656893
    Abstract: A display device includes a screen, first and second projectors, a detector, and a controller. The screen has first and second surfaces. The first projector projects a first horizontally non-inverted image as viewed from the first surface. The second projector projects a second horizontally non-inverted image as viewed from the second surface. The detector detects a person at least viewing one of the first and second surfaces. The controller controls switching of an operation between the first and second projectors in accordance with a detection result of the detector.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: May 19, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Masafumi Ono, Tomotaka Matsuyuki, Sayaka Hirose, Yuri Takeuchi
  • Patent number: 10638103
    Abstract: An image projection apparatus displays includes a lens attachable portion to which a plurality of projection lenses having different optical characteristics are interchangeably attached, a drive signal producer configured to produce, for each color light beam, a drive signal used to drive the light modulation element based on an input image signal, and an information acquirer configured to acquire information on an optical characteristic of the projection lens attached to the lens attachable portion. The information on the optical characteristic of the projection lens contains information on a chromatic aberration of the projection lens. The drive signal producer reduces influence of a shift below the modulation pixel caused by the chromatic aberration of the projection lens by using the information on the optical characteristic, and produces the drive signal corresponding to at least one of the plurality of color light beams.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: April 28, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Keisuke Kobayashi
  • Patent number: 10559060
    Abstract: The present invention includes a) creating geometry data of a theater screen, and mapping position information of seating on the geometry data to reconstruct a virtual theater structure, b) generating a grid mesh for each seat of the theater screen without changing edges of the theater screen, and c) generating a compensation map with minimized distortion of the grid mesh for each seat, and based on this, single-sampling compensating a pixel of an image to be displayed on the theater screen by the compensation map.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: February 11, 2020
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Junyong Noh, Jungjin Lee, Sangwoo Lee, Bumki Kim
  • Patent number: 10459328
    Abstract: A display device includes a screen, first and second projectors, and a controller. The screen has first and second surfaces. The first projector projects a first horizontally non-inverted image as viewed from the first surface. The second projector projects a second horizontally non-inverted image as viewed from the second surface. The controller controls switching of an operation between the first and second projectors and also performs control so that the first horizontally non-inverted image projected on the first surface will be projected on the second surface and so that the second horizontally non-inverted image projected on the second surface will be projected on the first surface.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: October 29, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Masafumi Ono, Tomotaka Matsuyuki, Sayaka Hirose, Yuri Takeuchi
  • Patent number: 10401597
    Abstract: A projection optical system is constituted by, in order from the reduction side, a first optical system constituted by a plurality of lenses for forming an image displayed by image display elements as an intermediate image, and a second optical system constituted by a plurality of lenses for forming the intermediate image on a magnification side conjugate plane. Conditional Formula (1), being that 0.020<enP/TL2<0.160, is satisfied, wherein enP is the distance along the optical axis from the surface most toward the magnification side in the second optical system to the position of an entrance pupil in the case that the magnification side is a light entry side, and TL2 is the distance along the optical axis from the surface most toward the reduction side in the second optical system to the surface most toward the magnification side in the second optical system.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: September 3, 2019
    Assignee: FUJIFILM Corporation
    Inventor: Masaru Amano
  • Patent number: 10268318
    Abstract: Examples disclosed herein relate to aligning content displayed from a projector on to a touch sensitive mat. Examples include detecting a border of the mat, wherein the mat includes a surface area of a first spectral reflectance characteristic on to which the projector is to project the content, and the border of a second spectral reflectance characteristic different from the first spectral reflectance characteristic surrounding a perimeter of the surface area. As an example, detecting the border of the mat generally includes differentiating the second spectral reflectance characteristic of the border from the first spectral reflectance characteristic of the surface area. Examples include detecting a border of the content displayed on to the mat, and adjusting projector settings for the border of the content displayed on to the mat to fit within the detected border of the mat.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: April 23, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jinman Kang, David Bradley Short, Daniel R Tretter, Kar-Han Tan, Yun Tang, Otto Sievert
  • Patent number: 10218951
    Abstract: Briefly, in accordance with one or more embodiments, a MEMS scanned beam projector includes a light source to emit a light beam, a scanning platform to redirect the light beam impinging on the platform, and a display controller to control the light source and the scanning platform to cause the scanning platform to scan the light beam in a vertical direction and a horizontal direction in a scan pattern to project an image onto a projection surface. The display controller is configured to correct for image distortion in the projected image by providing a compensated drive signal to the scanning platform to compensate for the image distortion.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: February 26, 2019
    Assignee: Microvision, Inc.
    Inventors: Jari Honkanen, Robert James Jackson, P. Selvan Viswanathan, Jonathan A. Morarity, David W. Armour
  • Patent number: 10218925
    Abstract: The present invention discloses a method and an apparatus for correcting lens distortion. In some feasible implementation manners of the present invention, image data acquired from a lens is corrected in a horizontal direction; the image data corrected in the horizontal direction is written into a dynamic memory; image data in the dynamic memory is corrected in a vertical direction; and lens distortion correction is performed in two steps: in the horizontal direction and in the vertical direction, so that lens distortion correction is implemented at a low cost. The present invention further discloses a corresponding apparatus for correcting lens distortion.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: February 26, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Shuiping Li, Angang Deng, Cong Xu
  • Patent number: 10180581
    Abstract: The present invention discloses an image correction method for an adjustable virtual reality helmet. The method comprises the steps of: pre-storing in the helmet a corresponding relation table between a configuration parameter and an image correction parameter and an image correction formula of the helmet; acquiring a real-time configuration parameter of the helmet; searching in the corresponding relation table an image correction parameter corresponding to a configuration parameter closest to the real-time configuration parameter; and performing image correction by calling the image correction formula based on a searched image correction parameter. The present invention also provides an image correction system for an adjustable virtual reality helmet. The present invention can provide better image correction effects for an adjustable virtual reality helmet.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: January 15, 2019
    Assignee: Beijing Pico Technology Co., Ltd.
    Inventors: Ligang Li, Yunlong Yang, Xiaogang Wang
  • Patent number: 10132620
    Abstract: A method for using structured light in a handheld projection device is provided that includes projecting a structured light pattern in at least one portion of a frame being projected by the handheld projection device, wherein the at least one portion of the frame is a subset of the frame, capturing an image of the projected frame, computing scene depth information based on the structured light pattern in the captured image, and using the scene depth information in processing of a subsequent frame of the video stream.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: November 20, 2018
    Assignee: Texas Instruments Incorporated
    Inventors: Vivienne Sze, Goksel Dedeoglu, Vinay Sharma
  • Patent number: 9696145
    Abstract: A method for using structured light in a handheld projection device is provided that includes projecting a structured light pattern in at least one portion of a frame being projected by the handheld projection device, wherein the at least one portion of the frame is a subset of the frame, capturing an image of the projected frame, computing scene depth information based on the structured light pattern in the captured image, and using the scene depth information in processing of a subsequent frame of the video stream.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: July 4, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Vivienne Sze, Goksel Dedeoglu, Vinay Sharma
  • Patent number: 9565394
    Abstract: A system and a method for displaying an image are disclosed herein. The system includes a surface on which the image is displayed and a display rendering device to display the image on the surface. The system also includes a capture device to detect the surface, a processor, and a non-transitory computer-readable storage medium including instructions that cause the processor to: determine dimensions of the surface, determine a first orientation of the surface, convert the image to display on the surface based on the determined dimensions of the surface and the determined first orientation of the surface, detect repositioning of the surface to a second orientation, determine the second orientation of the surface, and convert the image to display on the surface based on the determined dimensions of the surface and the determined second orientation of the surface relative to the capture device.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: February 7, 2017
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Geoffrey C Mayne, David Bradley Short, Daniel Weinstein, Dan Riedler
  • Patent number: 9478053
    Abstract: An image display device capable of performing a shape correction of an image displayed on an image display surface having a corner composed of a plurality of surfaces is provided. The image display device includes: an OSD processing unit that displays identification images respectively corresponding to four sides of an image; an identification image selection unit that accepts an operation of selecting the displayed identification image; a moving operation unit that accepts an operation of moving a node set at a predetermined position of the side corresponding to the selected identification image; and an image processing unit that corrects the shape of the image by moving, based on the operation accepted with the moving operation unit, the node of the side of the image displayed on an image display surface composed of a plurality of surfaces.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: October 25, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Jun Yoshimura, Makoto Kobayashi
  • Patent number: 9445066
    Abstract: A CPU controls an attitude adjustment unit to change the lengths of legs of an electric leg part independently of each other so that a roll angle is changed to roll a projected image, and controls an image converter to correct the projected image to be a rectangular image on a projection target based on the changed roll angle.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: September 13, 2016
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Hideaki Inoue
  • Patent number: 9317972
    Abstract: Method and apparatus for displaying augmented reality contents are disclosed. The method may include controlling a camera to scan an environment in view of a user, identifying a set of surfaces in the environment for displaying user interface windows according to characteristics of the environment, prioritizing a set of augmented reality contents for display with respect to the set of surfaces in the environment, and displaying the set of augmented reality contents on the set of surfaces in a display. Characteristics of the environment comprise at least aspect ratio of the set of surfaces with respect to the set of augmented reality contents to be displayed, and/or background color of the set of surfaces with respect to the set of augmented reality contents to be displayed.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: April 19, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Babak Forutanpour, Shriram Ganesh, Daniel S. Baker, Devender A. Yamakawa
  • Patent number: 9189988
    Abstract: Techniques involving the management of display parameters are disclosed. For example, an apparatus may include a display, a radio module, and a control module. The display employs various operational parameters, which can take on different values. Exemplary parameters include refresh rate and/or pixel clock rate. The radio module may receive a wireless signal at one or more reception frequencies. The control module may select values for these operational parameters of the display. This selection may be made according to characteristics of interference that would be emitted from the display at the one or more reception frequencies. Upon making this selection, the control module may direct the display to employ the selected parameter values.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: November 17, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Jerome C. Tu, Olivier Boireau, Isabel Mahe, Wen Zhao, Yury Fomin, Jianxiong Shi, Alexander Fertelmeister
  • Patent number: 9055242
    Abstract: A method of operating an image sensor chip including a motion sensor pixel sensing a motion of an object and a depth sensor pixel, the method including the operations of activating either the depth sensor pixel or the motion sensor pixel according to a mode selection signal, and processing a pixel signal output by either the activated depth sensor pixel or the activated motion sensor pixel.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 9, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tae Chan Kim, Hae Kyoung Kong
  • Publication number: 20150103257
    Abstract: An image processing device used for a projector displays an image by projecting the image on a projection surface. A detection image generation section adapted to generate a detection image, which is an image adapted to detect a state of a projection image displayed on the projection surface, and includes a plurality of detection image parts is provided. Each of the detection image parts includes a plurality of regions having respective luminance values different from each other. The detection image generation section changes the luminance distribution of each of the detection image parts of the detection image to be generated so that the maximum luminance values of the detection image parts included in the taken detection image obtained by taking the detection image projected on the projection surface fall within an allowable range.
    Type: Application
    Filed: March 19, 2013
    Publication date: April 16, 2015
    Inventor: Yoshitaka Nakashin
  • Publication number: 20150092114
    Abstract: A keystone correction apparatus and method of curved display are provided. The apparatus includes a curved screen that displays an image and a projector that has an infrared lighting device to irradiate infrared light to the curved screen. An infrared imaging device is configured to capture infrared light reflected from the curved screen. A controller is configured to determine whether the curved screen is distorted using an infrared image captured by the infrared imaging device and perform a keystone correction.
    Type: Application
    Filed: December 29, 2013
    Publication date: April 2, 2015
    Applicant: HYUNDAI MOTOR COMPANY
    Inventor: Jong Bok Lee
  • Patent number: 8985782
    Abstract: A projector that projects an image allows selection of one of a plurality of controlled objects located in correspondence with the vertices of the contour of the image and the sides of the contour, moves the selected controlled object within the image based on input operation, and corrects the contour of the image based on the moved controlled object.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: March 24, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Jun Yoshimura, Makoto Kobayashi
  • Patent number: 8944610
    Abstract: An image projection apparatus includes a light source; a projected image outputting unit having multiple mirrors arranged in a matrix, to which radiating light emitted from the light source while controlling an angle of a light reflection face of each of the mirrors; a control unit controls the angle of light reflection face of the mirrors using the a division half-toning control based on image data of a projected image, and settings of control parameters used for the time division half-toning control; and an image capturing device to capture the projected mage. When the control unit detects a false contour in a projected test pattern image based on image data of the projected test pattern image captured by the image capturing device, the control unit corrects the control parameters for the time division half-toning control based on detection of the false contour.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: February 3, 2015
    Assignee: Ricoh Company, Ltd.
    Inventor: Otoichi Nakata
  • Publication number: 20150029407
    Abstract: An image processing apparatus generates image data for projection by applying a deformation process to obtained image data based on an input parameter related to the deformation process. The image processing apparatus prohibits execution of the deformation process if it is determined that a magnification related to the deformation process based on the input parameter with respect to the obtained image data is out of a predetermined range.
    Type: Application
    Filed: July 11, 2014
    Publication date: January 29, 2015
    Inventors: Tetsurou Kitashou, Akihiro Takamura
  • Patent number: 8941785
    Abstract: A projector includes a moving unit adapted to move positions of at least six correction points, which are included in a correcting image, a reception unit adapted to receive a designation on a value of a parameter representing linearity, a derivation unit adapted to derive a correspondence relationship of the coordinates between and input image and the correcting image using coordinates of the at least six correction points moved by the moving unit, and the parameter having the value designation of which is received by the reception unit, and a processing unit adapted to perform a correction process on the input image based on the correspondence relationship derived by the derivation unit.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: January 27, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Manabu Saigo
  • Publication number: 20150009416
    Abstract: Provided is a display device including an image display unit configured to display an image with a plurality of pixels arranged on a display surface, an eyepiece optical unit configured to project the display surface of the image display unit in a manner that a predetermined angle of view is obtained, and an image correction unit configured to correct a display image on the display surface at a position of each of representative pixels which are discretely located on the display surface, on the basis of distortion generated due to the eyepiece optical unit.
    Type: Application
    Filed: December 17, 2012
    Publication date: January 8, 2015
    Applicant: SONY CORPORATION
    Inventors: Ken Tamayama, Akira Fujinawa, Masayuki Shimizu, Kiyoshi Ikeda
  • Patent number: 8913200
    Abstract: An encoding apparatus for inputting a first image signal and a second image signal from an input source different from an input source of the first image signal adaptively decides a first bit rate and a second bit rate which are respectively assigned to a first encoding unit for encoding the input first image signal and a second encoding unit for encoding the input second image signal on the basis of the first image signal, on the basis of photographing mode information or distortion ratios of encoding by the encoding units.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: December 16, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Koji Togita
  • Patent number: 8894217
    Abstract: An image projection apparatus includes a light source; a projected image outputting unit having multiple mirrors arranged in a matrix, to which radiating light emitted from the light source while controlling an angle of a light reflection face of each of the mirrors; a control unit controls the angle of light reflection face of the mirrors using the a division half-toning control based on image data of a projected image, and settings of control parameters used for the time division half-toning control; and an image capturing device to capture the projected mage. When the control unit detects a false contour in a projected test pattern image based on image data of the projected test pattern image captured by the image capturing device, the control unit corrects the control parameters for the time division half-toning control based on detection of the false contour.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: November 25, 2014
    Assignee: Ricoh Company, Ltd.
    Inventor: Otoichi Nakata
  • Patent number: 8866976
    Abstract: A projector capable of notifying the user of the fact that the installation angle has been varied when the projector is in operation is provided. The projector includes an angle detector adapted to detect an installation angle of the projector, a keystone distortion correction device adapted to perform a keystone distortion correction of a projection image projected on the projection surface based on the installation angle detected by the angle detector, and a controller adapted to record a variation in the installation angle as installation angle variation information on the storage device in a case in which the angle detector detects the variation when the projector is in operation, and then announce occurrence of the variation in the installation angle in a case in which the installation angle variation information is recorded on the storage device in a power-OFF sequence of the projector.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: October 21, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Takashi Ozawa
  • Patent number: 8820944
    Abstract: A portable image projection device has a housing with first and second members pivotable between device folded and unfolded positions. First lens optics mounted within the first member are configured for projecting light modulated by a spatial light modulator along an optical axis through a first aperture with a first throw ratio with the device in the folded position. A second lens optics element movably mounted within the first member is configured for selective movement between positions of non-intersection and intersection with the optical axis. The second lens optics element is configured for cooperating with at least part of the first lens optics for projecting the light modulated by the spatial light modulator along the optical axis through a second aperture with a second throw ratio less than the first throw ratio with the device in the unfolded position.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: September 2, 2014
    Assignee: Texas Instruments Incorporated
    Inventor: Jose S. Vasquez
  • Patent number: 8794768
    Abstract: A projection display device including: an image projection section configured to project an image toward a projection surface; an imaging section configured to shoot the image projected on the projection surface; a location specifying section configured to specify a location of a position indication light based on a shot image by the imaging section; and a display control section configured to set a projection range of the image to a range including an image area corresponding to the location specified by the location specifying section, and to alter the projection range of the image in accordance with the set projection range.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: August 5, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Takaaki Ozawa
  • Patent number: 8789954
    Abstract: A front projection display system for a vehicle including a pico projector including keystone correction; and, a retractable pico front projector screen operatively connected to the pico projector. In one embodiment, a common housing contains the pico projector and the retractable pico front projector screen. In another embodiment the pico projector is mounted within the protective covering. In some embodiments the front projector screen is motor driven and in other embodiments it operated by hand. The present invention is particularly advantageous in an aircraft environment where size and weight considerations are imperative.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: July 29, 2014
    Assignee: Rockwell Collins, Inc.
    Inventors: Steven C. Atkins, Chris A. Jameson, Timothy J. Bohr, James R. Dan, David F. Little, Alfred S. Alvarado
  • Patent number: 8733943
    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.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: May 27, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventor: Toshitaka Tachibana
  • Patent number: 8727539
    Abstract: In at least one embodiment of the disclosure, a projector comprises an imaging unit that photographs a projection surface and acquires a first photographed image during a projection of a featured image at a first time point and acquires a second photographed image during the projection of the featured image at a second time point different from the first time point. An image processing unit generates a reference image based on the first photographed image and generates a comparative image based on the second photographed image. A movement detecting unit detects a change in a relative position of the projector with respect to the projection surface by using the reference image and the comparative image generated by the image processing unit.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: May 20, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Akinari Todoroki
  • Patent number: 8717419
    Abstract: An image processing apparatus executes a distortion correction on coordinates of a target pixel in a virtual viewpoint image based on distortion characteristics of a virtual camera and calculates coordinates in the virtual viewpoint image after the distortion correction. The image process apparatus calculates ideal coordinates in a captured image from the coordinates in the virtual viewpoint image after the distortion correction and calculates real coordinates in the captured image from the ideal coordinates in the captured image based on distortion characteristics of an imaging unit. The image process apparatus calculates a pixel value corresponding to the real coordinates from image data of the virtual viewpoint image and corrects the pixel value corresponding to the real coordinates based on ambient light amount decrease characteristics of the imaging unit and ambient light amount decrease characteristics of the virtual camera.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: May 6, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiro Yahata, Takuya Kotani
  • Patent number: 8690337
    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.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: April 8, 2014
    Assignee: Funai Electric Co., Ltd.
    Inventors: Hiroshi Nishigaki, Atsuya Hirano, Atsuhiko Chikaoka, Ken Nishioka
  • Patent number: 8690348
    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.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: April 8, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jeong Nam Yeom, Sung Hoon Kim, Joon Myun Cho, Joo Chan Sohn
  • Patent number: 8643792
    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.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: February 4, 2014
    Assignee: Fakespace Labs, Inc.
    Inventors: Ian E. McDowall, Mark T. Bolas
  • Patent number: 8579443
    Abstract: Briefly, in accordance with one or more embodiments, a scanned beam display, comprises a light source to generate a beam to be scanned and a scanning platform to scan the beam into an exit cone. The scanning platform receives the beam at a selected feed angle, and the scanning platform has a surface structure to redirect the exit cone at an exit angle that is less than the feed angle.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: November 12, 2013
    Assignee: Microvision, Inc.
    Inventors: Joshua M. Hudman, Wyatt O. Davis, Mark O. Freeman, Mark P. Helsel, David Roy Bowman, Kelly D. Linden
  • Patent number: 8573780
    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.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: November 5, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Atsushi Ishii
  • Patent number: 8553149
    Abstract: A television leveling module determines, using at least one accelerometer module in response to activation of the television leveling module, an angle of orientation relative to horizontal of a television coupled to a horizontal level-adjustable mounting assembly. An indication of the angle of orientation relative to horizontal is displayed on a television display. The display of the indication of the angle of orientation relative to horizontal of the television is iteratively updated in response to detected adjustments of the angle of orientation. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: October 8, 2013
    Assignee: Sony Corporation
    Inventor: Frederick W. Ansfield
  • Patent number: 8545025
    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.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: October 1, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Naoki Suzuki
  • Patent number: 8534844
    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.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: September 17, 2013
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: Rod D. Waltermann, Scott Edwards Kelso, John Carl Mese, Nathan J. Peterson, Arnold S. Weksler
  • Patent number: 8529069
    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.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: September 10, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Nobuhiro Oka
  • Patent number: 8485668
    Abstract: Techniques for utilizing an infrared illuminator, an infrared camera, and a projector to create a virtual 3D model of a real 3D object in real time for users' interaction with the real 3D object.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: July 16, 2013
    Assignee: Microsoft Corporation
    Inventors: Chunhui Zhang, Ji Zhao, Chunshui Zhao, Rui Gao
  • Patent number: 8480237
    Abstract: A projector includes a light modulation section provided with a plurality of pixels arranged, and adapted to modulate light from a light source by the pixel, and when executing a keystone distortion correction on an image to be projected on a projection surface in response to an operation of an operation section, a maximum pixel area, which is a maximum area in which an image of the light modulation section is formed, and an image forming area in which the image to be the object of the keystone distortion correction is formed are projected simultaneously on the projection surface.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: July 9, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Akihiko Tamura
  • Patent number: 8425050
    Abstract: A projection display device includes: a projection section having an optical system; a parameter obtaining section adapted to obtain a first parameter corresponding to the projection angle showing a relative posture of the projection display device to the projection surface; a vanishing point calculation section adapted to calculate a position of a vanishing point based on the first parameter; an actual zoom ratio obtaining section adapted to obtain an actual zoom ratio; a parameter calculating section adapted to correct the first parameter based on a fixed reference zoom ratio and the actual zoom ratio to thereby calculate a second parameter; and a keystone correction section adapted to perform a keystone correction of the image based on the fixed reference zoom ratio and the second parameter.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: April 23, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Shiki Furui
  • Patent number: 8376549
    Abstract: A laser projection display and a method of compensating for image distortion of the same stereoscopic liquid crystal display device having a touch panel and a method for manufacturing the same are disclosed. Herein, the method includes displaying a picture including a red image, a green image, and a blue image, selecting one of the red image, the green image, and the blue image so as to perform pixel alignment of the picture, calculating pixel coordinate values x+dx and y+dy corresponding to the selected image (herein, x represents the x coordinate value prior to alignment, y represents the y coordinate value prior to alignment, dx represents a varied x coordinate value after alignment, and dy represents a varied y coordinate value after alignment), calculating distortion compensation coordinate values X? and Y? corresponding to the pixel coordinate values x+dx and y+dy, and mapping the distortion compensation values X? and Y?, thereby compensating for an image distortion occurring in the selected image.
    Type: Grant
    Filed: July 20, 2009
    Date of Patent: February 19, 2013
    Assignee: LG Electronics Inc.
    Inventors: Jung Hoon Seo, Jung Hwan Choi, Jae Wook Kwon