With Moving Color Filters Patents (Class 348/270)
  • Patent number: 10796200
    Abstract: In an example method for training image signal processors, a reconstructed image is generated via an image signal processor based on a sensor image. An intermediate loss function is generated based on a comparison of an output of one or more corresponding layers of a computer vision network and a copy of the computer vision network. The output of the computer vision network is based on the reconstructed image. An image signal processor is trained based on the intermediate loss function.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: October 6, 2020
    Assignee: Intel Corporation
    Inventors: Aleksandar Sutic, Zoran Zivkovic, Gilad Michael
  • Patent number: 10281675
    Abstract: An optical apparatus for manipulating light in an optical system that includes means for mechanically coupling the apparatus to an optical input device with the optical system such thus received light passes from the optical input device onwards toward an optical processor and means for moving at least one optical component between an aligned position and a non-aligned position.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: May 7, 2019
    Assignee: Starlight Xpress Ltd.
    Inventors: Terrence Christopher Platt, Michael Andrew Hattey
  • Patent number: 10057498
    Abstract: This invention provides a vision system camera assembly and method for using the same that employs a light-field camera with an associated vision system image sensor and overlying microlens optics to acquire images of a scene. The camera generates a light field allowing object features at varying depths of field to be clearly imaged in a concurrent manner. In an illustrative embodiment a vision system, and associated method of use thereof, which images an object or other subject in a scene includes a vision system camera with an optics assembly and a light field sensor assembly. The camera is constructed and arranged to generate light field image data from light received through the optics assembly. A light field process analyzes the light field image data and that generates selected image information. A vision system processor then operates a vision system process on the selected image information to generate results therefrom.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: August 21, 2018
    Assignee: Cognex Corporation
    Inventors: Laurens Nunnink, William Equitz, David J. Michael
  • Patent number: 9651425
    Abstract: A color sensor array includes a plurality of sensors. Each of the plurality of sensors has a width dimension and a length dimension that is elongated with respect to the width dimension. The length dimensions of the sensors are substantially equal to one another and parallel to an illumination plane. Each of the plurality of sensors includes a face defined by opposing first and second elongated sides and opposing first and second non-elongated sides. The first non-elongated sides of the plurality of sensors are aligned with one another along an axis that is substantially perpendicular to the illumination plane.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: May 16, 2017
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Stephan R. Clark, Brett E. Dahlgren
  • Patent number: 9455722
    Abstract: In a method and apparatus for using a clock generating circuit to minimize settling time after dynamic power supply voltage ramping, a clock signal may be generated using a clock generating circuit having, among other things, open feedback loop switch logic and a dynamic fast lock control signal generator. Whereupon, when in operation, the open feedback loop switch logic is responsive to a controlled change in power supply voltage condition such that a feedback loop of the clock generating circuit is opened during power supply voltage ramping (e.g., during transitions to or from battery conservation modes). In response to opening the feedback loop, the dynamic fast lock control signal generator selectively applies a stabilizing control signal to a variable clock signal generator (e.g., a voltage controlled oscillator) such that the generated clock signal can quickly lock onto the proper target frequency.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: September 27, 2016
    Assignee: ATI Technologies ULC
    Inventors: Shirley Lam, Nancy Chan, Mikhail Rodionov, Ramesh Senthinathan
  • Patent number: 9400365
    Abstract: A filter wheel assembly includes a filter wheel and an optical assembly. The filter wheel includes a plurality of viewing openings. The optical assembly includes an optical element secured within an aperture of a housing. The optical assembly is securable to the filter wheel at a viewing opening by a magnetic force. An optical apparatus includes an optical assembly receiver and first and second optical assemblies. The first optical assembly is securable to the optical assembly receiver and the second optical assembly is securable to the first optical assembly by a magnetic force to align the optical assembly receiver and the optical assemblies.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: July 26, 2016
    Assignee: Cellomics, Inc.
    Inventors: Dirk John Vandenberg, III, Keith R. Heffley
  • Patent number: 9393078
    Abstract: A medical-use light-source apparatus includes a light source lamp, a connector to which a body cavity endoscope and an ophthalmic observation apparatus can be selectively connected, a determiner which determines whether the body cavity endoscope or the ophthalmic observation apparatus is currently connected to the connector, and a lamp controller which sets a value of a maximum light amount of the illumination light to a first threshold value when the determiner determines that the body cavity endoscope is currently connected to the connector, and sets a value of a maximum light amount of the illumination light to a second threshold value that is smaller than the first threshold value when the determiner determines that the ophthalmic observation apparatus is currently connected to the connector.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: July 19, 2016
    Assignee: HOYA CORPORATION
    Inventors: Yoshitaka Shibahara, Hiroyuki Watanabe, Hidenori Takushima
  • Patent number: 9270953
    Abstract: An image capture unit includes an image sensor and a lens structure disposed proximate to the image sensor to focus an image onto the image sensor. A movable color filter grouping is disposed over the lens structure. The movable color filter grouping includes a plurality of N color filters arranged therein such that all light that is incident upon the image sensor through the lens structure is directed through only one of the plurality of N color filters of the movable color filter grouping per each exposure of the image sensor. A positioning device is attached to the movable color filter grouping to reposition the movable color filter grouping such that substantially all of the light that is incident upon the image sensor through the lens structure is directed through a different one of the plurality of N color filters for each successive exposure of the image sensor.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: February 23, 2016
    Assignee: OmniVision Technologies, Inc.
    Inventors: Chia-Ching Wang, Jau-Jan Deng, Yun-Chiang Hsu
  • Patent number: 9247127
    Abstract: Fast focusing methods and devices for multi-spectral imaging are disclosed. The method comprising selecting one of a plurality of imaging channel as a reference channel, adjusting rotation positions of a stepper motor, calculating focus measures corresponding to all rotation positions of the stepper motor, and obtaining a first distribution curve; in each of the other imaging channels, selecting at least three rotation positions of the stepper motor, matching focus measures at the selected rotation positions with the first distribution curve to obtain a second distribution curve and a offset value between the first distribution curve and the second distribution curve, and calculating a clear focusing position of the imaging channel to be focused according to the offset value; performing a fine-tuning focusing, and thereby obtaining a more precise clear focusing position. A fast focusing for multi-spectral imaging and obtain clear multi-spectral images is obtained.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: January 26, 2016
    Assignee: THE HONG KONG RESEARCH INSTITUTE OF TEXTILES AND APPAREL LIMITED
    Inventors: Huiliang Shen, Wei Wang, Zhi-Huan Zheng, John Haozhong Xin, Sijie Shao
  • Patent number: 9031285
    Abstract: A method and system for detecting floating objects in maritime video is disclosed. The horizon is detected within the video. Modeling of the sky and water is performed on the video. Objects are detected that are not water and sky within the video.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: May 12, 2015
    Assignee: UtopiaCompression Corporation
    Inventors: Hieu Tat Nguyen, Prakash Ramu, Hai Wei, Xiaoqing Liu, Jacob Yadegar
  • Patent number: 9013623
    Abstract: A color image sensor having a plurality of sensor elements arranged in a two-dimensional array, wherein the sensor elements each include an optical filter whose transmission behavior is electrically adjustable, and wherein the color image sensor includes a control for controlling the optical filters.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: April 21, 2015
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Michael Schmid, Stephan Gick
  • Patent number: 8988565
    Abstract: An imaging apparatus, including imaging optical system having a lens group and an aperture stop, and a solid-state image sensor which includes a photoelectric conversion layer made of an organic material and a color filter layer with color filters of two or more colors and a separation wall. The photoelectric conversion layer has a thickness of 0.1 82 m to 1 ?m, each of the color filters has a refractive index of 1.5 to 1.8, the separation wall has a width of 0.05 ?m to 0.2 ?m and a refractive index of 1.22 to 1.34, and the lens group and the solid-state image sensor are disposed such that the relationship between a pixel pitch D (?m) of the sensor and a maximum angle ? (°) of a principal ray incident on the sensor is 45???25.D?20 where D?2.6 ?m.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: March 24, 2015
    Assignee: FUJIFILM Corporation
    Inventors: Hideki Asano, Takeharu Tani
  • Publication number: 20150042853
    Abstract: A solid-state imaging device includes: a pixel unit in which a plurality of pixels are arranged in a matrix pattern; and a pixel signal read-out unit including an AD conversion unit performing AD conversion of a pixel signal read out from the pixel unit, wherein each pixel included in the pixel unit includes division pixels divided into regions in which photosensitivity levels or electric charge accumulating amounts are different from one another, wherein the pixel signal reading unit includes a normal read-out mode and a multiple read-out mode, and wherein the AD conversion unit acquires a pixel signal of one pixel by adding the division pixel signals read out in accordance with the read-out mode while performing AD conversion for the division pixel signals.
    Type: Application
    Filed: October 23, 2014
    Publication date: February 12, 2015
    Inventors: Yusuke Minagawa, Go Asayama
  • Patent number: 8934048
    Abstract: Apparatus and methods for using infra-red light provide for enhanced operation in camera applications. In an embodiment, a safety camera includes an optical filter that provides an input to an imager from received light having wavelengths in the infra-red spectrum. Output from the imager can be analyzed to determine safety hazard events in an area viewed by the safety camera.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: January 13, 2015
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Francis Lawrence Leard, James Edward Dogul
  • Patent number: 8908244
    Abstract: An image processing apparatus includes an achromatization determination portion, an achromatization processing portion, and a line designation portion. If a black pixel is present within a predetermined peripheral range from a target pixel in a sub-scanning direction, the achromatization determination portion determines whether to achromatize the target pixel, on the basis of an attribute of a background determination pixel present in an opposite direction from the target pixel with respect to the black pixel and within a range of a predetermined number of pixels from the black pixel. If no black pixel is present within the predetermined peripheral range from the target pixel in the sub-scanning direction, the achromatization determination portion determines not to achromatize the target pixel.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: December 9, 2014
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Masaki Miyashita
  • Patent number: 8866962
    Abstract: An imaging apparatus capable of performing shooting with flash light emitted by a flash device includes an imaging unit configured to capture an image of an object to output image data, and a charging control unit configured to perform charging control of a capacitor configured to accumulate energy for performing flash emission by the flash device. The charging control unit, in a case where shooting with flash light emitted by the flash device is performed, among a plurality of shooting operations for acquiring a plurality of pieces of image data to be used for image combining processing, performs the charging control so that charging of the capacitor is not performed until the last shooting of the plurality of shooting operations for acquiring a plurality of pieces of image data to be used for the image combining processing is finished.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: October 21, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shinichiro Yano
  • Publication number: 20140232912
    Abstract: There is provided an image pickup unit capable of suppressing occurrence of false color and color mixture and acquiring a color image with high image quality. The image pickup unit includes: an image sensor including a plurality of pixels and acquiring an image pickup data; a variable filter provided on a light receiving face of the image sensor, and transmitting a selective wavelength; and a filter drive section (a wavelength selection circuit and a system control section) driving the variable filter and thereby setting its transmission wavelength. By acquiring the image pickup data while time-divisionally switching the transmission wavelength of the variable filter, pixel data corresponding to the transmission wavelength of the variable filter are acquired in a temporally-successive manner.
    Type: Application
    Filed: September 28, 2012
    Publication date: August 21, 2014
    Applicant: Sony Corporation
    Inventor: Rui Morimoto
  • Patent number: 8767102
    Abstract: This disclosure describes a method of improving filter wheel imaging data capture and other functionality through use of an improved filter wheel design with pie shaped filter segments, continuously rotating image capture, multiple filtered images, and easily removable and attachable filter segments.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: July 1, 2014
    Assignee: Pixelteq, Inc.
    Inventors: David E. Fish, Emil Janicek
  • Publication number: 20140168446
    Abstract: A pixel array is provided. The pixel array comprises a plurality of two-dimensionally arranged 4*4 Bayer matrix units, in which the matrix unit comprises a plurality of pixels, any of a green filter, a red filter and a blue filter is disposed in one pixel, and one or more of the green filters are replaced by white color filters in the matrix units. A camera using the same and a color processing method based on the pixel array are also provided.
    Type: Application
    Filed: February 21, 2014
    Publication date: June 19, 2014
    Applicants: BYD COMPANY LIMITED, SHENZHEN BYD AUTO R&D COMPANY LIMITED
    Inventors: Mao PENG, Jingjun FU, Wenge HU
  • Patent number: 8724008
    Abstract: An image processing apparatus obtains a plurality of pre-restoration images of an object for chromatic components when these images are taken at a first in-focus position to a third in-focus position corresponding to the RGB chromatic components, obtains an image pickup state and an image restoration filter corresponding to the image pickup state for each chromatic component, restores the pre-restoration image at an in-focus position for each chromatic component utilizing the obtained image restoration filter, and synthesizes the restored images.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: May 13, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Chiaki Inoue, Koshi Hatakeyama
  • Publication number: 20140118585
    Abstract: An embodiment relates to a method for color processing of an input image, the method including the steps of low-pass filtering of the input image to obtain a low-pass component, high-pass filtering of the input image to obtain a high-pass component, processing the input image for edge detection to obtain edginess parameters, and performing a color-space transformation of the input image based on the low-pass component, the high-pass component, and the edginess parameters.
    Type: Application
    Filed: October 29, 2013
    Publication date: May 1, 2014
    Applicant: STMICROELECTRONICS S.R.L.
    Inventors: Filippo NACCARI, Arcangelo Ranieri BRUNA, Simone BIANCO, Raimondo SCHETTINI
  • Patent number: 8692912
    Abstract: This disclosure describes an apparatus and method of multi-spectral imaging to obtain and analyze information contained in the spectral distribution (reflection, absorption, or emission) of components within the image. The spectral information is captured in a series of images from differing spectral regions. This series of images are then combined into a composite image using re-colorization and image stabilization algorithms for display in real time. The process can be repeated continuously allowing spectral changes over time to be captured and analyzed. In the alternative one sequence of images can be captured for use as a still image.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: April 8, 2014
    Assignee: Pixelteq, Inc.
    Inventors: David E. Fish, Jason M. Eichenholz
  • Publication number: 20140071316
    Abstract: An imaging apparatus, including imaging optical system having a lens group and an aperture stop, and a solid-state image sensor which includes a photoelectric conversion layer made of an organic material and a color filter layer with color filters of two or more colors and a separation wall. The photoelectric conversion layer has a thickness of 0.1 82 m to 1 ?m, each of the color filters has a refractive index of 1.5 to 1.8, the separation wall has a width of 0.05 ?m to 0.2 ?m and a refractive index of 1.22 to 1.34, and the lens group and the solid-state image sensor are disposed such that the relationship between a pixel pitch D (?m) of the sensor and a maximum angle ? (°) of a principal ray incident on the sensor is 45???25.D?20 where D?2.6 ?m.
    Type: Application
    Filed: November 11, 2013
    Publication date: March 13, 2014
    Applicant: Fujifilm Corporation
    Inventors: Hideki ASANO, Takeharu TANI
  • Patent number: 8659686
    Abstract: System and methods of target detection utilize quantum mechanical transition in surface material of a target, such as a weather balloon in flight against a background (sky, clouds), to produce an inflection in spectral reflectance. The system includes at least two filters alternating in front of the lens as the camera attempts to acquire alternate filtered data. The filters can include a rotating filter wheel with two filters alternately sampling the brightest and darkest points around an inflection point in the spectral reflectance curve of the target's material. Target material is observed to blink, or alternate between bright and dark, as filters alternate in front of the camera lens while the background is unchanging, rendering optimal first detection of the target, and may be readily automated. The described process can use a filter wheel, but use of an electrically tunable filter can provide a device with no moving parts.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: February 25, 2014
    Assignee: The United States of America as Represented by the Secretary of the Air Force
    Inventor: Frank O. Clark
  • Publication number: 20140022422
    Abstract: Interpolation precision of phase difference detection pixels is raised. An image pickup device includes: a color filter disposed with a repeating basic array pattern configured by 3×3 pixel square arrays of a first array pattern and a second array pattern disposed symmetrically about a point; a first phase difference detection pixel that is placed at a position of a pixel corresponding to 1 corner portion out of the 4 corner portions of at least one array pattern in 1 pair of the first array pattern and the second array pattern out of 2 pairs of the first array pattern and the second array pattern configuring the basic array pattern; and a second phase difference detection pixel that is placed at a position of a pixel corresponding to 1 corner portion out of the 4 corner portions in the array pattern, out of the first array pattern.
    Type: Application
    Filed: September 23, 2013
    Publication date: January 23, 2014
    Applicant: FUJIFILM Corporation
    Inventors: Hiroshi ENDO, Takashi AOKI, Yoichi IWASAKI, Kazuki INOUE, Kenkichi HAYASHI, Seiji TANAKA, Noriko KAWAMURA
  • Patent number: 8542271
    Abstract: A monitor device for use with an endoscope apparatus, which has first and second display modes. In the first display mode, the monitor device displays, in real time, any image transmitted in a normal radio communication state. In the second display mode, the monitor device displays a noise-free image in real time, if a radio communication error occurs. If one-frame (or one-field) image data is not received within the frame (or field) time due to a communication error, the monitor device displays, in the second display mode, the image data received in a normal state immediately before the one-frame (or one-field) image data, and informs the operator of the communication error.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: September 24, 2013
    Assignees: Olympus Corporation, Olympus Medical Systems Corp.
    Inventors: Takahisa Endo, Takemitsu Honda
  • Patent number: 8373794
    Abstract: A movable sensor including a plurality of photo pixel sites arranged in an array comprising a photo sensor and a neutral density filter filtering the photo sensor. Each of the neutral density filters have a density value that are graduated over a range of densities. The sensor is linearly movable across an image. Each point in the image is exposed to at least one pixel site with the graduated density values and each of the photo pixel sites of the array is exposed to a same light input during a time span of exposure, such that the image is captured at a defined range of exposure values and can be combined into a single high dynamic range image.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: February 12, 2013
    Assignee: International Business Machines Corporation
    Inventor: Robert P Hablutzel
  • Patent number: 8259200
    Abstract: An imaging apparatus includes: an imaging section receiving color light and interpolation light including at least a part of a wavelength range of the color light in order to interpolate the brightness of the color light and converting the received color light and interpolation light into a signal; a control section controlling a first exposure time of the color light and a second exposure time of the interpolation light separately according to the brightness of an object to be imaged; and an image creating section creating an image on the basis of a color signal, which is output when the imaging section receives the color light, during the first exposure time controlled by the control section and on the basis of an interpolation signal, which is output when the imaging section receives the interpolation light, during the second exposure time controlled by the control section.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: September 4, 2012
    Assignee: Sony Corporation
    Inventor: Hiroshi Iwasa
  • Patent number: 8243093
    Abstract: Aspects of the present invention relate to creation, modification and implementation of dither pattern structures applied to an image to diminish contouring artifacts. Some aspects relate to dither pattern structures with pixel values in a first color channel pattern that are spatially dispersed from pixel values in a corresponding pattern in a second color channel. Some aspects relate to application. Some aspects relate to systems and apparatus for creation and application of these dither pattern structures comprising pixel values dispersed across color channels.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: August 14, 2012
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Xiao-Fan Feng, Scott J. Daly
  • Patent number: 8233058
    Abstract: An image processing apparatus includes a spectrum estimation unit for estimating a spectrum for each pixel from multiband image data comprising image data in multiple different wavelength ranges; a memory for storing spectral data suitable for each of multiple different shooting modes; and a conversion unit for determining a shooting mode of the multiband image data and converting the spectrum into band data with different spectral characteristics using the spectral data stored in the memory, the spectral data suitable for the determined shooting mode.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: July 31, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Mitsuaki Hattori
  • Patent number: 8172399
    Abstract: A stereo 3D projector with the ability to provide the native lumen output of the projector when not in 3D mode. This is accomplished by using two rotating polarizing filters at least partially overlapping, each with at least two or more segments, some of which are fully transparent and at least some of which are polarized linearly or circularly.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: May 8, 2012
    Assignee: International Business Machines Corporation
    Inventors: Casimer M. DeCusatis, Timothy M. Trifilo
  • Patent number: 8159598
    Abstract: Attempts to achieve a higher resolution and a higher frame rate of a distance image when a distance to an object within a target space is estimated using the TOF method would cause CCD saturation due to shot noise or environment light, and lower distance precision. A distance estimation apparatus illuminates an object with illumination light for distance estimation emitted from a light source that can emit light (electromagnetic wave) having a predetermined illumination frequency, receives reflected light of the illumination light, obtains information about the distance from the apparatus to the object, generates distance image data based on the distance information, extracts edge information of a color image formed using a visible light component obtained in synchronization with the reflected light, and corrects distance information of a target part of the distance image using distance information of a neighboring part of the target part based on the edge information.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: April 17, 2012
    Assignee: Panasonic Corporation
    Inventors: Tatsumi Watanabe, Yasuhiro Kuwahara, Takeshi Ito, Bumpei Toji, Daisuke Sato, Shinya Kiuchi, Yoshiaki Owaki
  • Patent number: 8139166
    Abstract: An image projection apparatus includes an image processing device, an illuminating device, a light valve, and a projection optical system; wherein the projection optical system is formed in such a way that at least one of a first deviation corresponding to an amount of the magnification chromatic aberration of a light having a central wavelength of the red light relative to the green light and a second deviation corresponding to an amount of the magnification chromatic aberration of the blue light relative to the green light is larger than a fixed-pixel pitch, and a third deviation corresponding to an amount of the magnification chromatic aberration of a light having a maximum wavelength of the red light relative to a light having a minimum wavelength of the red light is not larger than the fixed-pixel pitch; wherein the first deviation and/or the second deviation is eliminated by supplying the compensated video signal to the light valve.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: March 20, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Muneharu Kuwata, Tomohiro Sasagawa
  • Patent number: 8115854
    Abstract: An image sensor and a method of forming an image sensor. The image sensor includes an array of pixel cells at a surface of a substrate. Each pixel cell has a photo-conversion device. At least one a micro-electro-mechanical system (MEMS) element including a photonic crystal structure is provided over at least one of the pixel cells. The MEMS-based photonic crystal element is supported by a support structure and configured to selectively permit electromagnetic wavelengths to reach the photo-conversion device upon application of a voltage. As such, the MEMS-based photonic crystal element of the invention can replace or compliment conventional filters, e.g., color filter arrays.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: February 14, 2012
    Assignee: Micron Technology, Inc.
    Inventor: Chandra Mouli
  • Patent number: 8031969
    Abstract: Methods and apparatuses for selecting appropriate anisotropic filtering levels for images. An image is obtained, that image is Fourier transformed into its frequency components, and then those frequency components are normalized. The Fourier transformed into its frequency components are assigned to Fourier buckets (or bins) having dimensions selected in accord with the number of available anisotropic filtering levels. A predetermined threshold value is used to select one of the Fourier buckets by comparing the predetermined threshold value with the contents of the Fourier buckets. The selected Fourier bucket is used to determine an appropriate anisotropic filtering level for the image. Some embodiments of the present invention can provide for an automatic selection and setting of the appropriate anisotropic filtering level.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: October 4, 2011
    Assignee: NVIDIA Corporation
    Inventor: Jeffrey T. Kiel
  • Patent number: 7973829
    Abstract: An object of the invention is to provide an image sensing apparatus capable of sensing an image in consideration of the influence of inserting/removing an optical filter, an image sensing method, a recording medium, and a program. To achieve this object, a brightness value calculation unit calculates the first brightness value representing the brightness of part or all of an object which is imaged on a CCD image sensing element. A brightness value correction unit calculates the second brightness value by correcting the first brightness value calculated by the brightness value calculation unit on the basis of the light reduction amount generated by inserting an ND filter. A system controller controls an optical system and signal processing in a DSP circuit by using the second brightness value calculated by the brightness value correction unit.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: July 5, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoshiro Udagawa
  • Patent number: 7901086
    Abstract: For displaying a color image by recombination of several single color images, parasitic noise like speckles due to scattering within the system, in particular when laser light is involved, with the invention a significant improvement with a low number of parts can be realized by use of a color wheel that comprises in radially divided zones refractive elements for redirecting light beams incoming at different impinging angles and redistributing elements, e.g. a hologram, that provide for a defined output beam in an optical axis. The sequence of the individual light processing zones on the color wheel are synchronized with respective laser sources. The invention combines the functionality of plural elements, reduces speckles and avoids losses.
    Type: Grant
    Filed: March 12, 2007
    Date of Patent: March 8, 2011
    Assignee: SONY Deutschland GmbH
    Inventors: Olivier Ripoll, Markus Kamm
  • Patent number: 7828447
    Abstract: A projector includes a light-source unit, a color wheel, and a connecting portion. The light-source unit with a first support structure is configured for providing light beams. The color wheel includes a color filter, a rotating portion, a motor and a second support structure. The color filter is rotatable together with the rotating portion driven by the motor, which is fixed on the second support structure. The connecting portion is configured for connecting the first and second support structures together and aligning the light-source unit with the color wheel.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: November 9, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Wen-Pin Yeh
  • Patent number: 7796880
    Abstract: A flash device includes a flash module and a color wheel. The flash module includes a flash lamp and a trigger circuit for triggering the flash lamp. The color wheel includes a color filter disk. The color filter disk includes a number of filter segments, wherein each of the filter segments is capable of being inserted into the light-emitting path of the flash lamp by rotation the color filter disk.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: September 14, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Ming-Shan Chan, Pei-Ching Kuo, Sheng-An Wang
  • Patent number: 7623708
    Abstract: Color shift correction comprising: (a) imaging an object and acquiring image data of each of a plurality of color planes including planes of primaries; (b) determining whether a color of each of pixels of color image data obtained by combining the image data of each of the plurality of color planes is imaginary; (c) counting the number of pixels determined in step (b) to have imaginary color and calculating the number of pixels within one frame which have imaginary color; (d) repeating a process of performing a pixel shift operation, relative to image data of each of the plurality of color planes, and performing steps (b) and (c) using the image data of each of the plurality of color planes having undergone the pixel shift operation, and obtaining, a pixel shift operation for the color planes; and (e) correcting the image data of the plurality of color planes on the basis of the pixel shift operation.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: November 24, 2009
    Assignee: Fujifilm Corporation
    Inventor: Hitoshi Urabe
  • Patent number: 7554586
    Abstract: A system and method for multi-spectral image capture of a first scene includes acquiring a first series of images of the first scene with one or more image acquisition systems and filtering each of the first series of images of the scene with a different non-interference filter, illuminating each image of the first series of images with a different illuminant, or acquiring each of the images of the first series of images with a different image acquisition system. Each of the image acquisition systems has at least one color channel, each of the non-interference filters has a different spectral transmittance, and each of the illuminants has a different spectral power distribution.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: June 30, 2009
    Assignee: Rochester Institute of Technology
    Inventors: Francisco Hideki Imai, Roy Stephen Berns
  • Patent number: 7426065
    Abstract: An imager apparatus comprises a pixel and a first filter positioned in an incident light path for a portion of the pixel, the filter being operable to alternate between transmitting and reducing incident light on the pixel portion.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: September 16, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: William Robert Haas, Kirk Steven Tecu, Dave W. Boll
  • Patent number: 7290883
    Abstract: The disclosed embodiments relate to a system and method for projecting video onto a screen. A video unit (10) may comprise a color wheel (14), a light source (12) configured to project light through the color wheel (14) during a spoke time, and a digital micromirror device (18) configured to reflect the projected light (30) onto a screen (26). The method may comprise the acts of shining a generally white light (28) through a region on a color wheel (14) to create a colored light (30), the region comprising two color filters, reflecting the colored light (30) off of a micromirror disposed on a digital micromirror device (18), and projecting the reflected colored light (34) onto a screen (26).
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: November 6, 2007
    Assignee: TTE Tchnology, Inc.
    Inventor: Brent William Hoffman
  • Patent number: 7158323
    Abstract: Disclosed is an optical filter switching apparatus used in an optical instrument for converting externally input image information into video image information and outputting the video image information. The apparatus comprises: an optical filter holding section holding a first optical filter and a second optical filter; an actuator having a rotary solenoid which rotates between a first position and a second position. A rotational power transmission section transmits the rotational force of the rotary solenoid to the optical filter holding section; and a microprocessor controls the rotary solenoid of the actuator in accordance with at least one external input signal and the power level of the video image information. The rotary solenoid is rotated to at least one of the first and second positions.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: January 2, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hak-je Kim, Jun-kyu Kim
  • Patent number: 7139040
    Abstract: A system and method for correcting non-periodic event time of arrival data in a control system. The system and methods are particularly applicable to the speed and phase control of a color wheel used with spatial light modulators. The circuitry automatically and accurately compensates for non-periodic index signals occurring when one or more index marks on the color wheel are misplaced. The system adds to or subtracts clock pulses from the actual time of arrival of a specific index mark until the corrected value equals the desired or nominal value. The system then generates a PWM signal for controlling the speed and phase of the color wheel.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: November 21, 2006
    Assignee: Texas Instruments Incorporated
    Inventor: Stephen W. Marshall
  • Patent number: 7098952
    Abstract: An imager includes an array of pixel sensors. Each pixel sensor indicates at least two different primary color components of an image. For each pixel sensor, at least two storage locations are located in the array and store the indications from the pixel sensor.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: August 29, 2006
    Assignee: Intel Corporation
    Inventors: Tonia G. Morris, Kevin M. Connolly, Larry A. Booth, Jr.
  • Patent number: 7042506
    Abstract: A solid-state image pick-up system according to the present invention comprises an image pick-up lens for making incident light from a subject form an image on an image pick-up surface, a light source alternately emitting a plurality of color light beams at a given period, a solid-state image pick-up device for receiving the subject light separated through the color separating section to convert it into a given subject picture signal, an image pick-up mode selecting circuit for selecting one of a standard mode for picking up a dynamic mode and a high-sensitivity mode for picking up a still picture, and a control section for controlling the period for the color separating section on the basis of the output of the image pick-up mode selecting circuit.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: May 9, 2006
    Assignee: Olympus Corporation
    Inventors: Akihiro Kubota, Yukihiro Sugimoto, Toshiyuki Noguchi, Hiroshi Itoh
  • Patent number: 6738104
    Abstract: A new method for phase locking the color wheel in a color field-sequential projection display. At periodic interrupts, the method determines which color wheel index mark should be driven into coincidence with the Vsync signal. It does this by measuring the delay between Vsync and any index mark and then based on the current state of the spoke-sync counter and this delay value, a new next state is determined to drive the nearest index mark to Vsync to the Vsync position. At worst case this technique requires only one-half a color wheel revolution of phase correction to re-lock the system when the TV channel is changed and for the 5/2 and 7/2 spoke-sync modes, popular 50 Hz and 60 Hz modes, only one-quarter revolution of phase correction of the color wheel is required for re-lock.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: May 18, 2004
    Assignee: Texas Instruments Incorporated
    Inventor: Stephen W. Marshall
  • Patent number: 6702446
    Abstract: The invention relates to a projection display device comprising a illumination system having a light source and an optical bar for providing an illumination beam, an image display system comprising a display panel for modulating the illumination beam with image information and projecting the image on a screen, and a color filter provided on a wheel, rotatably mounted at its hub, for transmitting colored portions of the illumination beam for illuminating the display panel. In order to improve the efficiency of the projection display device, the color filter comprises adjacent spiral-shaped filter portions for simultaneously illuminating portions of the display panel by the colored portions of the illumination beam so that the portions of the display panel are consecutively illuminated by the colored portions of the illumination beam.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: March 9, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Adrianus Johannes Stephanes Maria De Vaan, Gerardus Johannes Josephus Vanlier
  • Patent number: RE41272
    Abstract: An imaging apparatus with divers resolution includes a light source, a reflection lens set, a major lens and an image-capture unit. The light source is used to illuminate a document for further generating a document image. The reflection lens set includes a plurality of reflection lenses for forwarding the document image consecutively to the major lens. The major lens is used to receive the document image transported by the reflection lens set and to form the document image at a focal point thereof. The image-capture unit includes a plurality of image-capture elements with various resolution for meeting divers usage requirements. While in usage, a suitable image-capture element with particular resolution can be shifted to the focal point of the major lens for performing the imaging.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: April 27, 2010
    Inventor: Tsang-Huai Chang