For Color Scanning Patents (Class 348/210.99)
  • Patent number: 10192124
    Abstract: Disclosed is an optical unit wherein a rotating reflector rotates about a rotation axis in one direction, while reflecting light emitted from a light source. The rotating reflector is provided with a reflecting surface such that the light reflected by the rotating reflector, while rotating, forms a desired light distribution pattern, said light having been emitted from the light source. The light source is composed of light emitting elements. The rotation axis is provided within a plane that includes an optical axis and the light source. The rotating reflector is provided with, on the periphery of the rotation axis, a blade that functions as the reflecting surface.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: January 29, 2019
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventor: Satoshi Yamamura
  • Patent number: 8947448
    Abstract: A parallax representation unit in a displayed image processing unit uses a height map containing information on a height of an object for each pixel to represent different views caused by the height of the object. A color representation unit uses, for example, texture coordinate values derived by the parallax representation unit to render the image, shifting the pixel defined in the color map. The color representation unit uses the normal map that maintains normals to the surface of the object for each pixel to change the way that light impinges on the surface and represent the roughness accordingly. A shadow representation unit uses a horizon map, which maintains information for each pixel to indicate whether a shadow is cast depending on the angle relative to the light source, so as to shadow the image rendered by the color representation unit.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: February 3, 2015
    Assignees: Sony Corporation, Sony Computer Entertainment Inc.
    Inventors: Hiroyuki Segawa, Noriaki Shinoyama, Akio Ohba, Tetsugo Inada
  • Patent number: 8624985
    Abstract: A wide angle, athermalized, achromatic, hybrid imaging lens assembly captures return light from a target over a field of view, and projects the captured return light onto an array of image sensors of a solid-state imager during electro-optical reading of the target. The assembly includes a plastic lens group for optical aberration compensation, a glass lens group spaced away from the plastic lens group along an optical axis, and an aperture stop between the lens groups and having an aperture through which the optical axis extends. The glass lens group has substantially all the optical power of the imaging lens assembly for thermal stability, and the plastic lens group has substantially no optical power. A holder holds the lenses and the aperture stop in front of the array.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: January 7, 2014
    Assignee: Symbol Technologies, Inc.
    Inventors: Igor Vinogradov, Vladimir Gurevich, David Tsi-Shi
  • Patent number: 8619147
    Abstract: A device for capturing rendered text is described. The device incorporates one or more visual sensors that receive visual information as a part of capturing rendered text. The visual sensors are collectively capable of capturing both text that is permanently printed on a page, and text that is displayed transitorily on a dynamic device. The device further incorporates a visual information disposition subsystem for disposing of visual information received by the visual sensors. The device further incorporates a package that bears the visual sensors and the visual information disposition subsystem, and is suitable to be held in a human hand.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: December 31, 2013
    Assignee: Google Inc.
    Inventors: Martin T. King, Dale L. Grover, Clifford A. Kushler, James Q. Stafford-Fraser
  • Patent number: 8531538
    Abstract: An image processing apparatus includes a decoding processor including a decoder configured to decode encoded data of image data of one frame having a plurality of pixels encoded by a variable length coding method and generating decoded data, and a data transfer unit configured to select decoded data in a target partial region in which a predetermined image processing is to be performed as partial image data out of the decoded data inputted from the decoder and transfer the selected data; and an image processor configured to perform the given image processing on the partial image data selected in the data transfer unit and store the image-processed partial image data in a storage device.
    Type: Grant
    Filed: February 15, 2009
    Date of Patent: September 10, 2013
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Motohiro Nakai, Tomohiro Fukuoka
  • Patent number: 8514423
    Abstract: A device for imaging a flat object, for example a paper sheet in a printing machine, includes a light source, preferably an LED row, a lens and an image sensor. An observation angle between the object plane and lens axis is flat, that is to say less than 45°. The light source illuminates the flat object in a first, near region with light of a first wavelength and illuminates the flat object in a second, far region with light of a second wavelength. The first wavelength is shorter than the second wavelength, preferably being blue and red spectral regions. The first region is disposed nearer the image sensor than the second region. The device permits the so-called chromatic aberration of the lens to be utilized to advantageously reduce the tilt angle of the image sensor required by the so-called Scheimpflug condition. A printing machine having the device is also provided.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: August 20, 2013
    Assignee: Heidelberger Druckmaschinen Aktiengesellschaft
    Inventors: Tobias Müller, Andreas Rupprecht
  • Patent number: 8284279
    Abstract: A multispectral imaging method and system is provided. A multispectral imaging method of the present invention includes determining an on-off combination of a plurality of light sources illuminating a scene; illuminating the scene with the light sources according to the on-off combination selected on the basis of a first control signal generated by a microcontroller; capturing an image of the scene by operating a camera on the basis of a second control signal synchronized with the first control signal; determining a plurality of spectral basis functions and weights of the spectral basis functions; and acquiring a continuous spectral reflectance by summing values obtained by multiplying the spectral basis functions and respective weights. The multispectral imaging method of the present invention is practical and efficient in that a continuous spectral reflectance image can be acquired with a minimized number of measurements required for obtaining spectral reflectance.
    Type: Grant
    Filed: January 29, 2008
    Date of Patent: October 9, 2012
    Inventors: Jong-Il Park, Moon Hyun Lee, Michael Grossberg, Shree K. Nayar
  • Patent number: 8269845
    Abstract: A process for the optical detection of objects moved at a conveying speed. The process comprises illuminating the object in a temporally consecutive manner with a sequence of at least two light pulses of different colors and taking images of the object during each light pulse with a monochromatic optical area sensor comprising many sensor lines. The process comprises reading out and temporarily storing at least as many lines of each image as there are different colors of the light pulses. The read-out lines have a line pitch relative to each other. Sequentially combining lines from images taken under illumination by different colors to form color lines, with the lines combined with each other having the aforesaid line pitch or a multiple thereof relative to each other when they are being read out, and assembling the color lines into an overall color picture.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: September 18, 2012
    Assignee: EVK DI Kerschhaggl GmbH
    Inventors: Josef Fruehwirth, Axel Kulcke
  • Patent number: 7812860
    Abstract: A device for capturing rendered text is described. The device incorporates one or more visual sensors that receive visual information as a part of capturing rendered text. The visual sensors are collectively capable of capturing both text that is permanently printed on a page, and text that is displayed transitorily on a dynamic device. The device further incorporates a visual information disposition subsystem for disposing of visual information received by the visual sensors. The device further incorporates a package that bears the visual sensors and the visual information disposition subsystem, and is suitable to be held in a human hand.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: October 12, 2010
    Assignee: Exbiblio B.V.
    Inventors: Martin T. King, Dale L. Grover, Clifford A. Kushler, James Q. Stafford-Fraser
  • Patent number: 7456844
    Abstract: An image transmission method comprises the steps of: receiving a request including request information having size information concerning an image and/or area information concerning the image; reconstructing small image areas by taking out code words constituting the small image areas based on the request information, the code words being independent of one another; and transmitting a response including the small image area to a requester in each small image area reconstructed in the step of reconstructing small image areas.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: November 25, 2008
    Assignee: Ricoh Company, Ltd.
    Inventor: Junichi Hara
  • Patent number: 7397944
    Abstract: A color image processing pipeline performs an interpolation on color data to generate triplets located at distinct pixel locations. The pipeline includes defect correction and image enhancement blocks having a first color interpolation block for generating RGB information for each pixel of an input image pixel pattern, and a second color interpolation block for receiving the RGB information to provide enhanced RGB pattern pixels. Dedicated line memories and delay circuits associated with the defect correction and image enhancement blocks permit real-time processing of pixel data. First and second read/write buffers store a subset or pixel block of the image data, and invert a scanning mode of pixel data being fed to the dedicated line memories and delay circuits associated to at least the first color interpolation block, from row-wise to column-wise, for each subset of data to be stored therein.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: July 8, 2008
    Assignee: STMicroelectronics S.r.l.
    Inventors: Giuseppe Spampinato, Francesco Pappalardo, Paolo Antonino Foderá, Francesco Virlinzi, Alessandro Capra
  • Patent number: 7391556
    Abstract: A display system includes a transparent tapered plate comprising a first face, a second face, and a third face. The first face is substantially smaller than the second face and the third face. The display system also includes a row of tiltable mirror plates each comprising a reflective surface. Each of the mirror plates is configured to tilt to an “on” position to reflect incident light in an “on” direction or to tilt to an “off” position to reflect incident light in an “off” direction. An optical scanning system is configured to control the direction of the light reflected by the mirror plates in the “on” direction. The row of the tiltable mirror plates, optical scanning system and the tapered plate are configured to allow the light reflected by the row of mirror plates in the “on” direction to enter the tapered plate at the first face, be reflected by the second face, and produce a line of image pixels on the third face.
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: June 24, 2008
    Assignee: Spatial Photonics, Inc.
    Inventor: Shaoher X. Pan
  • Patent number: 7370972
    Abstract: In a two-dimensional image display device, speckle noise is reduced by a simple construction. A two-dimensional image display device for displaying an image by projecting coherent light onto a projection plane is provided with at least one coherent light source (1a), (1b), (1c) for outputting coherent light, a polarization state modulator 6 for modulating at least one of a polarization state and a phase of the coherent light emitted from the coherent light source, and a birefringent diffusion plate (7) for spatially varying the phase of the coherent light emitted from the polarization state modulator. The polarization states of light spots in the respective pixels of the image displayed on the projection plane are spatially and temporally varied, thereby forming various speckle patterns.
    Type: Grant
    Filed: December 24, 2004
    Date of Patent: May 13, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akihiro Morikawa, Ken'ichi Kasazumi, Kiminori Mizuuchi
  • Patent number: 7113333
    Abstract: Aspects of the invention provide a screen or the like that enables a bright, homogeneous projection image to be observed in a wide range across an area where viewers are present. A screen having a micro-lens array formed of a plurality of micro-lens elements each having a first surface having a curvature and a second surface of an almost planar shape through which incident light that comes incident on the first surface can be transmitted.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: September 26, 2006
    Assignee: Seiko Epson Corporation
    Inventor: Shunji Kamijima
  • Patent number: 6927855
    Abstract: A method is provided of determining an image recording device characterisation for a target image. A number of component spectra are determined from a set of target spectra obtained from the target image such that the spectra can be represented by combinations of one or more of the component spectra. A perceptual color space data set is defined and combinations of the component spectra which correspond to the perceptual color space data set are determined. A device data set is generated in accordance with the determined combinations and a device spectra response, the device data set representing a set of colors which can be generated by an image recording device having the device spectral response. A characterisation is then determined by reference to the relationship between the device and perceptual color space data sets.
    Type: Grant
    Filed: May 1, 2003
    Date of Patent: August 9, 2005
    Assignee: Fujifilm Electronic Imaging Limited
    Inventors: Michael John Wilsher, Martin Philip Gouch
  • Patent number: 6690420
    Abstract: An integrated circuit architecture of contact image sensor for generating bi-level images and associated method are disclosed. The architecture comprises an image sensor, an amplifier, an analyzing circuit and a comparator, in one particular embodiment, it further comprises an electrically erasable programmable read-only memory (EEPROM). The amplifier is coupled to the image sensor and receives electronic signals therefrom and further receives pairs of gain and offset from the EEPROM. The electronic signals are adjusted in the amplifier respectively and sequentially in accordance to the pairs of gain and offset. The analyzing circuit determines a dynamic threshold to the comparator that subsequently produces the bi-level images.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: February 10, 2004
    Assignees: Syscan, Inc., Shenzhen Syscan Technology Co., Limited.
    Inventor: Dongtai Liu