Patents by Inventor Masayuki Tachi

Masayuki Tachi 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: 20140347528
    Abstract: An apparatus for and a method of executing noise reduction processing and defect compensation processing on an image in an RGBW arrangement are provided. In pixel value compensation processing of a color pixel that makes up image data in the RGBW arrangement that has each color pixel of R, G, and B and a white (W) pixel, the W pixel is interpolated at a position of an attention pixel that is a compensation target, and at a position of a reference pixel which has the same color as an attention pixel within a reference area, smoothing weight is calculated based on each pixel value of the interpolation W pixel, and thus a compensation pixel value of the attention pixel is calculated by executing smoothing processing to which the calculated smoothing weight is applied. Moreover, by applying the W pixel in the neighborhood of the color pixel, it is determined whether or not the color pixel is in a texture area, and only if the color pixel is not in the texture, defect compensation processing is executed.
    Type: Application
    Filed: November 29, 2012
    Publication date: November 27, 2014
    Applicant: Sony Corporation
    Inventor: Masayuki Tachi
  • Publication number: 20140347516
    Abstract: There is provided a signal processor including a phase difference detection part configured to acquire a pixel value of one light-shielding pixel having a part of a light-receiving region shielded therein and pixel values of a peripheral pixel row of the light-shielding pixel in a light shielding direction. A corrected pixel value obtained by subjecting the pixel value of the light-shielding pixel to a reduced sensitivity correction is compared with the pixel values of the peripheral pixel row to detect a phase difference of the light-shielding pixel.
    Type: Application
    Filed: May 15, 2014
    Publication date: November 27, 2014
    Applicant: Sony Corporation
    Inventors: Kenichi Sano, Masayuki Tachi
  • Publication number: 20140267839
    Abstract: A signal processing unit; includes: a high-frequency signal determination section configured to determine whether a reference region as a peripheral region of a phase difference pixel is a high-frequency signal region in a specific direction based on a pixel signal output from an image pickup section having the phase difference pixel disposed therein; and a synthetic ratio determination section configured to, when the reference region is determined to be not the high-frequency signal region in the specific direction, determine, using a pixel difference of the reference region, a synthetic ratio of an interpolated value of the phase difference pixel by a gain multiple interpolation technique to an interpolated value of the phase difference pixel by a peripheral pixel interpolation technique.
    Type: Application
    Filed: March 7, 2014
    Publication date: September 18, 2014
    Applicant: Sony Corporation
    Inventors: Hisashi Nishimaki, Masayuki Tachi
  • Patent number: 8837853
    Abstract: There is provided an image processing apparatus including an image signal correction unit for performing a blur correction process on an image. The image signal correction unit includes a blur correction processing section configured to perform a blend process for a default filter and a coordinate position-corresponding high pass filter, which is generated according to an image height of a pixel to be subjected to blur correction, using a blend coefficient determined according to the image height of the pixel to be subjected to blur correction, and to perform a blur correction process using a filter generated through the blend process.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: September 16, 2014
    Assignee: Sony Corporation
    Inventor: Masayuki Tachi
  • Publication number: 20140253808
    Abstract: To provide a device and a method for executing remosaic processing for performing conversion into an image of a different pixel array. Remosaic processing for inputting, as an input image, a mosaic image in which pixel blocks configured of a plurality of same-color pixels are arrayed, and converting the pixel array of the input image into a different pixel array is executed. In this remosaic processing, from among constituent pixels of the input image, pixel value gradients in eight directions in a conversion-target pixel location that is targeted for color conversion processing are detected, an interpolated pixel value calculation mode for the conversion-target pixel is decided on the basis of the pixel value gradients in the eight directions, and an interpolated pixel value for the conversion-target pixel location is calculated in accordance with the decided processing mode.
    Type: Application
    Filed: June 29, 2012
    Publication date: September 11, 2014
    Applicant: Sony Corporation
    Inventor: Masayuki Tachi
  • Patent number: 8744206
    Abstract: Provided is an image processing apparatus including an infinite impulse response (IIR) mean value calculation section for calculating a mean value of signal values of reference pixels around a correction target pixel according to an IIR filter application process, an IIR variance value calculation section for calculating a variance value of the signal values of the reference pixels around the correction target pixel according to the IIR filter application process, an edge-preserving smoothing processing section for receiving the mean and variance values of the reference pixels and executing an edge-preserving smoothing process to which the mean and variance values are applied, and an IIR filter coefficient calculation section for updating an IIR filter coefficient to be applied to the IIR mean value calculation section and the IIR variance value calculation section according to a signal value of a pixel constituting an image.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: June 3, 2014
    Assignee: Sony Corporation
    Inventors: Yoshikuni Nomura, Masayuki Tachi
  • Publication number: 20130057734
    Abstract: There is provided an image processing apparatus including an image signal correction unit for performing a blur correction process on an image. The image signal correction unit includes a blur correction processing section configured to perform a blend process for a default filter and a coordinate position-corresponding high pass filter, which is generated according to an image height of a pixel to be subjected to blur correction, using a blend coefficient determined according to the image height of the pixel to be subjected to blur correction, and to perform a blur correction process using a filter generated through the blend process.
    Type: Application
    Filed: August 2, 2012
    Publication date: March 7, 2013
    Applicant: Sony Corporation
    Inventor: Masayuki Tachi
  • Publication number: 20120314946
    Abstract: Provided is an image processing apparatus including an infinite impulse response (IIR) mean value calculation section for calculating a mean value of signal values of reference pixels around a correction target pixel according to an IIR filter application process, an IIR variance value calculation section for calculating a variance value of the signal values of the reference pixels around the correction target pixel according to the IIR filter application process, an edge-preserving smoothing processing section for receiving the mean and variance values of the reference pixels and executing an edge-preserving smoothing process to which the mean and variance values are applied, and an IIR filter coefficient calculation section for updating an IIR filter coefficient to be applied to the IIR mean value calculation section and the IIR variance value calculation section according to a signal value of a pixel constituting an image.
    Type: Application
    Filed: May 29, 2012
    Publication date: December 13, 2012
    Applicant: Sony Corporation
    Inventors: Yoshikuni Nomura, Masayuki Tachi
  • Patent number: 8314863
    Abstract: An image processing device includes: a blurring correction processing unit configured to perform blurring correction processing on output signals of an imaging device having an RGBW array which includes RGB pixels and white (W) pixels, and generate blurring-corrected signals corresponding to each pixels; and a data conversion unit configured to convert the RGBW array into an RGB array; wherein the data conversion unit executes processing of generating blurring-corrected RGB signals (Rd, Gd, Bd) which are blurring-corrected signals corresponding to RGB that have been estimated from blurring-corrected signals generated by the blurring correction processing unit, and applying the blurring-corrected RGB signals (Rd, Gd, Bd) to determine RGB signals values configuring an RGB array.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: November 20, 2012
    Assignee: Sony Corporation
    Inventor: Masayuki Tachi
  • Publication number: 20110050918
    Abstract: An image processing device includes: a blurring correction processing unit configured to perform blurring correction processing on output signals of an imaging device having an RGBW array which includes RGB pixels and white (W) pixels, and generate blurring-corrected signals corresponding to each pixels; and a data conversion unit configured to convert the RGBW array into an RGB array; wherein the data conversion unit executes processing of generating blurring-corrected RGB signals (Rd, Gd, Bd) which are blurring-corrected signals corresponding to RGB that have been estimated from blurring-corrected signals generated by the blurring correction processing unit, and applying the blurring-corrected RGB signals (Rd, Gd, Bd) to determine RGB signals values configuring an RGB array.
    Type: Application
    Filed: August 23, 2010
    Publication date: March 3, 2011
    Inventor: Masayuki TACHI