Patents by Inventor Shuji Senda

Shuji Senda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20150117762
    Abstract: Provided is an image processing device that can bring about the sufficient resemblance between an original image and a restored image obtained corresponding to a low resolution input image. The image processing device includes a means that uses a dictionary for storing data associating deteriorated patches which are from a deteriorated image formed by deteriorating a prescribed image, and restoration patches which are from the prescribed image, and calculates, as a degree-of-similarity between plural input patches generated by dividing an input image and the deteriorated patches, a weighted degree-of-similarity between weighted deteriorated patches and weighted input patches, in which forms of the deteriorated patches and the input patches are reconfigured using a patch weight which is continuous weighting; a means that selects, on the basis of the weighted degree-of-similarity, a restoration patch for each input patch; and a means that combines the restoration patches to generate a restored image.
    Type: Application
    Filed: December 10, 2012
    Publication date: April 30, 2015
    Applicant: NEC Corporation
    Inventors: Takashi Shibata, Akihiko Iketani, Shuji Senda
  • Patent number: 8908988
    Abstract: Error-function determining means makes use of a blur function serving as a function representing the degree of blurring of a blurred input image and a geometrical-deformation matrix serving as a matrix for restricting an operation to lay out a 2-dimensional code shown by the input image on cells each serving as a configuration unit of the 2-dimensional code in order to determine an error function serving as a function satisfying a relation that, the smaller the error between the input image and an image obtained by adding geometrical deformations and blurs to a recovered image obtained from a recovering process, the more the approach to a result determined in advance. Pixel-value restricting means determines pixel-value restriction information prescribing a restriction condition for a restriction imposed on a predetermined pixel value obtained from discretization of pixel values of the 2-dimensional code to be recovered.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: December 9, 2014
    Assignee: NEC Corporation
    Inventors: Takashi Shibata, Akihiko Iketani, Shuji Senda
  • Publication number: 20140355900
    Abstract: For each pixel of an input image, a direction toward which variation in pixel value between the relevant pixel and its peripheral pixels is largest and an amount of the variation in pixel value are computed, where a direction unit vector that indicates the direction toward which the variation is largest and a variation vector that represents the amount of the largest variation in the pixel value are computed. For each pixel, a regularization strength is computed utilizing the direction unit vector, the variation vector, and a regularization strength computing formula so that the larger the amount of the variation in pixel value toward a direction indicated by the direction unit vector, the less the regularization strength. An optimization function is determined based on the input image and the regularization strength for each pixel thereof and assigns a value for each pixel, by which the determined optimization function has the minimum value, to the corresponding pixel of a restored image to be generated.
    Type: Application
    Filed: June 21, 2012
    Publication date: December 4, 2014
    Applicant: NEC CORPORATION
    Inventors: Takashi Shibata, Akihiko Iketani, Shuji Senda
  • Patent number: 8897601
    Abstract: An image conversion parameter calculation device accurately calculates a conversion parameter for image alignment with a processing amount that does not depend on the size of an image to be aligned. A pixel selection element randomly selects pixels from a predetermined number or pixels of not more than the predetermined number from a first image. A parameter derivation element derives a conversion parameter by performing processing for pixels selected by the pixel selection element, the conversion parameter being a parameter for converting, to the first image, a second image that is subject to image alignment with the first image.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: November 25, 2014
    Assignee: NEC Corporation
    Inventor: Shuji Senda
  • Publication number: 20140340529
    Abstract: An automatic projection image correction system (1) includes: a projection image frame detection unit (101) that detects straight lines forming a frame of a screen-projected image which is projected onto a screen by a projector from a captured image obtained by capturing the screen-projected image using a camera; and a projector plane parameter estimation unit (102) that sets coordinate axes to a projector image, which is an original image of the screen-projected image, and the captured image and estimates at least one of a distance between the screen and the projector, an inclination of the screen with reference to an optical axis of the projector, and a zoom ratio of the projector, using an inclination of the optical axes of the projector and the camera, a distance between the optical centers of the projector and the camera, an intrinsic parameter of the camera, coordinate data of the detected straight lines at coordinates of the captured image, and coordinate data of straight lines corresponding to the fra
    Type: Application
    Filed: September 11, 2012
    Publication date: November 20, 2014
    Applicant: NEC Corporation
    Inventors: Takashi Shibata, Akihiko Iketani, Shuji Senda
  • Publication number: 20140334720
    Abstract: The present invention generates a highly-accurate restored image while reducing computation costs by obtaining a similar effect to when the adjacent similarity of restoration patches is taken into consideration.
    Type: Application
    Filed: December 10, 2012
    Publication date: November 13, 2014
    Applicant: NEC CORPORATION
    Inventors: Takashi Shibata, Akihiko Iketani, Shuji Senda
  • Publication number: 20140321738
    Abstract: A dictionary creation device including a blurred image generation unit which outputs a blurred image generated by performing a blurring process to a learning image together with a blur parameter indicating a blurring state of the blurred image, a patch pair generation unit which generates a restoration patch and a blurred patch as a patch pair that is composed of the patches located at the corresponding positions of the learning image and the blurred image, and a registration unit which associates the patch pair with a blur parameter corresponding to the blurred patch in the patch pair and registers them in a dictionary.
    Type: Application
    Filed: December 10, 2012
    Publication date: October 30, 2014
    Inventors: Takashi Shibata, Akihiko Iketani, Shuji Senda
  • Publication number: 20130279755
    Abstract: The present invention includes: a database which stores a position on a map and feature information in an image which can be taken by an imaging device at the position, to be associated with each other; an extraction means for extracting the feature information from the image; an estimation means for estimating the position at which the imaging device exists on a map on the basis of the extracted feature information referring to the database; a display means for displaying an estimated current position of the imaging device; a determination means for determining whether or not an imaging direction of the imaging device is varied by a predetermined amount from a direction in which the image from which the feature information is extracted is taken during the imaging; and a control means for controlling the extraction means so that new feature information is extracted, upon determining that the direction is varied by the predetermined amount; wherein the estimation means combines the new feature information and
    Type: Application
    Filed: December 16, 2011
    Publication date: October 24, 2013
    Applicant: NEC CORPORATION
    Inventor: Shuji Senda
  • Publication number: 20130195373
    Abstract: Error-function determining means makes use of a blur function serving as a function representing the degree of blurring of a blurred input image and a geometrical-deformation matrix serving as a matrix for restricting an operation to lay out a 2-dimensional code shown by the input image on cells each serving as a configuration unit of the 2-dimensional code in order to determine an error function serving as a function satisfying a relation that, the smaller the error between the input image and an image obtained by adding geometrical deformations and blurs to a recovered image obtained from a recovering process, the more the approach to a result determined in advance. Pixel-value restricting means determines pixel-value restriction information prescribing a restriction condition for a restriction imposed on a predetermined pixel value obtained from discretization of pixel values of the 2-dimensional code to be recovered.
    Type: Application
    Filed: August 11, 2011
    Publication date: August 1, 2013
    Applicant: NEC CORPORATION
    Inventors: Takashi Shibata, Akihiko Iketani, Shuji Senda
  • Publication number: 20130064451
    Abstract: An image conversion parameter calculation device capable of accurately calculating a conversion parameter for image alignment with a processing amount that does not depend on a size of an image to be aligned is provided. Pixel selection element 2 randomly selects a pixel of a predetermined number or pixel of not more than the predetermined number from a first image. Parameter derivation element 6 derives a conversion parameter by performing processing for selected pixels which are the pixels selected by the pixel selection element, the conversion parameter being a parameter for converting, to the first image, a second image that is subject to image alignment with the first image.
    Type: Application
    Filed: September 9, 2010
    Publication date: March 14, 2013
    Applicant: NEC CORPORATION
    Inventor: Shuji Senda
  • Patent number: 8339357
    Abstract: The grouping unit assigns an m-digit value expressed by an n-ary notation to each input candidate character one-for-one to classify the respective input candidate characters into n groups on a basis of each of the m digits. The group displaying unit causes the display device to display, in the lump on a group basis, the input candidate characters classified on a digit basis. Among n selection keys corresponding to the respective groups, the input device has one key operated by a user to output information indicating which selection key is operated (information indicative of a selection key operated) to the character structuring unit. The character structuring unit determines a character according to information input from the input device.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: December 25, 2012
    Assignee: NEC Corporation
    Inventor: Shuji Senda
  • Patent number: 8224099
    Abstract: A difference region extracting section 122 extracts differential regions based on screen data of a previous screen stored in transmission screen data storage section 124 and a current screen stored in a screen data storage section 121. A priority determining section 123 calculates change data density indicating a degree of a change of pixel values for every differential region. For example, when a user operates an icon on the screen, the change data density of the differential region corresponding to the icon becomes larger than the change data density of the differential region corresponding to the background portion of a video image. An encoding section 125 writes screen code data of each differential region in a transmission buffer 141 in descending order of the change data density.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: July 17, 2012
    Assignee: NEC Corporation
    Inventors: Akitake Mitsuhashi, Shuji Senda
  • Publication number: 20120170861
    Abstract: In an image processing apparatus, a conditional probability calculating element calculates the probability of existence of an attribute as to each region in an input degraded image, for each attribute. Optimization function determining element uses a conditional probability calculated by the conditional probability calculating element with regard to each region in the degraded image for each attribute, a-priori knowledge defined as a conditional probability of appearance of an attribute in a region of a candidate of a restored image when there is the attribute in the region, and the input degraded image to determine an optimization function using the candidate of the restored image as a variable and yielding a smaller value as the candidate of the restored image is closer to a true restored image. Restored image determining element adopts the candidate of the restored image with which the optimization function yields a minimum value as the restored image.
    Type: Application
    Filed: September 9, 2010
    Publication date: July 5, 2012
    Applicant: NEC CORPORATION
    Inventors: Takashi Shibata, Akihiko Iketani, Shuji Senda
  • Publication number: 20110163988
    Abstract: An inside/outside determining unit determines whether a touch position of a contact body is located outside or inside an inside/outside determining target region defined with respect to a display position of an image object as a target region for inside/outside determination of the touch position of the contact body. The signal generating unit generates a signal indicating the operation performed with respect to the image object when it is determined that the touch position of the contact body is located outside the inside/outside determining target region.
    Type: Application
    Filed: July 7, 2009
    Publication date: July 7, 2011
    Applicant: NEC CORPORATION
    Inventor: Shuji Senda
  • Publication number: 20100322523
    Abstract: A difference region extracting section 122 extracts differential regions based on screen data of a previous screen stored in transmission screen data storage section 124 and a current screen stored in a screen data storage section 121. A priority determining section 123 calculates change data density indicating a degree of a change of pixel values for every differential region. For example, when a user operates an icon on the screen, the change data density of the differential region corresponding to the icon becomes larger than the change data density of the differential region corresponding to the background portion of a video image. An encoding section 125 writes screen code data of each differential region in a transmission buffer 141 in descending order of the change data density.
    Type: Application
    Filed: June 27, 2008
    Publication date: December 23, 2010
    Inventors: Akitake Mitsuhashi, Shuji Senda
  • Publication number: 20100250561
    Abstract: The present invention is directed to a contents display system that arranges an image corresponding to contents in accordance with predetermined attribute information. The contents display system is provided with a contents arrangement means that arranges a contents image corresponding to contents that do not meet a predetermined limitation condition at a position where a viewing recognition of at least part of the contents corresponding image is not obstructed by a contents image corresponding to contents that meet a predetermined limitation condition.
    Type: Application
    Filed: October 31, 2008
    Publication date: September 30, 2010
    Applicant: NEC CORPORATION
    Inventors: Kyosuke Nishiyama, Shuji Senda
  • Publication number: 20100231503
    Abstract: The grouping unit assigns an m-digit value expressed by an n-ary notation to each input candidate character one-for-one to classify the respective input candidate characters into n groups on a basis of each of the m digits. The group displaying unit causes the display device to display, in the lump on a group basis, the input candidate characters classified on a digit basis. Among n selection keys corresponding to the respective groups, the input device has one key operated by a user to output information indicating which selection key is operated (information indicative of a selection key operated) to the character structuring unit. The character structuring unit determines a character according to information input from the input device.
    Type: Application
    Filed: June 30, 2006
    Publication date: September 16, 2010
    Applicant: NEC CORPORATION
    Inventor: Shuji Senda
  • Publication number: 20100225667
    Abstract: A thumbnail creating section creates a thumbnail of a specified object to be read. A linear information computing section computes an internal coordinate used as linear information from attribute information on each content. An order-of-priority determining section determines the order of priority of each content. A thumbnail line-forming section forms a line of thumbnails according to the scale specified by the user. A superposition thumbnail nondisplay section does not display a thumbnail having the lower order of priority than that of the other of the superposed thumbnails.
    Type: Application
    Filed: January 30, 2007
    Publication date: September 9, 2010
    Inventors: Kyosuke Nishiyama, Shuji Senda
  • Publication number: 20100042936
    Abstract: There is provided a browsing technology capable of performing a browsing operation intuitively as well as by a smaller number operations without the need of a device capable of performing a direct pointing such as a mouse in a layout arrangement reflecting the intention of a creator of a browsing document. Browsing documents are displayed at an ordinary display mode and in a zapping display mode. The ordinary display mode is a mode for displaying an entire display screen (a first display region) on which an entire HTML document, in which a browsing target is blocked, is displayed and a detail display screen (a second display region) on which the detail of the blocked HTML document is displayed.
    Type: Application
    Filed: August 21, 2006
    Publication date: February 18, 2010
    Applicant: NEC CORPORATION
    Inventors: Satoru Ooga, Kyousuke Nishiyama, Shuji Senda, Yushin Tatsumi
  • Publication number: 20100031014
    Abstract: An information concealing device comprises a mask means for prompting the user to specify a secret area in an input image, a secret area specifying means for generating image data describing the image of the specified area in the input image and describing an area other than the specified area in a single color, an encoding means for converting the image data, which describes the image of the specified area in the input image and describes an area other than the specified area in a single color, to image data describing a code, and an embedding means for generating the image data of an image describing the specified area in the input image in a single color and embedding the code into the image.
    Type: Application
    Filed: December 5, 2007
    Publication date: February 4, 2010
    Inventor: Shuji Senda