Patents by Inventor Won Woo Jang

Won Woo Jang 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).

  • Patent number: 8306320
    Abstract: A Two-Dimensional (2D) image segmentation apparatus for segmenting pixels of a progressive input 2D image includes a group information storing unit storing information of pixel groups including a plurality of adjacent pixels; a pixel determining unit determining coordinates of an input pixel, and determining whether the input pixel is an effective pixel for segmentation; a group scanning unit scanning a adjacent pixel group disposed in a scan range preset from the effective pixel in the group storing unit when the input pixel is determined as the effective pixel by the pixel determining unit; and a group information updating unit updating information of a pixel group stored in the group information storing unit according to whether there is the scanned adjacent pixel group and a pixel group including an input pixel preceding the effective pixel. Moreover, a method is provided that removes red-eye using area information of a pixel group determined by the segmentation apparatus.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: November 6, 2012
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Kang Joo Kim, Bong Soon Kang, Suk Chan Kim, Won Woo Jang, Sung Jin Lee, Jung Hwan Park, Hak Sun Kim, Won Tae Choi, Boo Dong Kwak
  • Patent number: 8145009
    Abstract: Provided are an apparatus for removing ringing noise and an apparatus for removing noise. The apparatuses includes a representative value setting block dividing pixel data in one block including a plurality of pixel data into two groups through a K-means algorithm and setting a representative value in each of the groups; a parameter generator block calculating intervals and approaches between all the pixel data in the block and a pair of the representative values; and a correction block correcting an inputted pixel data value using the intervals and the approaches.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: March 27, 2012
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Boo Dong Kwak, Bong Soon Kang, Won Woo Jang, Hak Sun Kim, Joo Hyun Kim, Won Tae Choi
  • Patent number: 8145014
    Abstract: There is provided an apparatus for removing color noise including: a color interpolation unit performing color interpolation on a bayer pattern image output from an image sensor; a high-pass filter unit performing high-pass filtering on each of the pixels of the bayer pattern image to generate high-pass filtered values of each of the pixels; a high frequency region determining unit comparing pixel values of a target pixel, from which color noise is removed, and pixels adjacent to the target pixel with the high-pass filtered values to determine whether the target pixel is included in a high frequency region; and a color noise region determining unit using differences between color values of the target pixel interpolated by the color interpolation unit and determining whether the target pixel is included in a color noise region when it is determined that the target pixel is included in the high frequency region.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: March 27, 2012
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Boo Dong Kwak, Bong Soon Kang, Joo Young Ha, Sung Mok Lee, Won Woo Jang, Won Tae Choi, Joo Hyun Kim
  • Patent number: 8131084
    Abstract: Provided is an apparatus for improving the sharpness of an image. The apparatus includes an edge detector, an effective edge judging unit, an effective edge classifying unit, an isolated edge judging unit, and a 2-D HPF applying unit. The edge detector calculates an edge value using brightness relation with neighboring pixels with respect to each of pixels of an input image. The effective edge judging unit determines effective edge pixels. The effective edge classifying unit determines weak edge pixels and strong edge pixels. The isolated edge judging unit judges an isolated edge pixel included in an isolated edge. The 2-D HPF applying unit applies a first 2-D HPF to the weak edge pixels, and applies a second 2-D HPF to the strong edge pixels to generate edge strengthening values. The edge strengthening value applying unit adds the edge strengthening values to brightness values of the respective pixels of the input image.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: March 6, 2012
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Joo Hyun Kim, Bong Soon Kang, Hyun Soo Kim, Won Woo Jang, Kyung Rin Kim, Won Tae Choi, Boo Dong Kwak
  • Publication number: 20120033885
    Abstract: There is provided an apparatus for improving the sharpness of an image, which may prevent occurrence of distortion of an image in an edge enhancement process of the image by applying an active weight in accordance with a two-dimensional (2D) high pass filtering value of the image. The apparatus may include: a 2D high pass filter outputting a high frequency element value for the luminance values of pixels of an input image; a weight generating unit generating a weight changed depending on a magnitude of the high frequency element value; a weight applying unit applying the weight to the high frequency element value; and an edge enhancement image generating unit adding, to the luminance values of the pixels of the input image, the high frequency element value to which the weight is applied to thereby output an image of which an edge is enhanced.
    Type: Application
    Filed: April 22, 2011
    Publication date: February 9, 2012
    Applicants: Dong-A University Research Foundation For Industry-Academy Cooperation, SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Joo Young HA, Won Tae CHOI, Bong Soon KANG, Byung Hyun KIM, Joo Hyun KIM, Sun Mi SIN, Won Woo JANG, Hak Yong HAN, Gi Dong LEE
  • Publication number: 20120033884
    Abstract: There are provided an apparatus and a method for estimating edge areas of pixels in a digital image to thereby prevent an edge sharpening algorithm from being applied to non-edge area of the digital image. Therefore, the apparatus can accurately determine whether each pixel is in an edge area or in a non-edge area, by generating a binary mask obtained by using a luminance difference average between each pixel and each of neighboring pixels in the digital image. Moreover, the determination of an edge-area or a non-edge area may be applied to various digital images, by adjusting a level of edge-area determination.
    Type: Application
    Filed: April 21, 2011
    Publication date: February 9, 2012
    Applicants: Dong-A University Research Foundation for Industry-Academy Cooperation, SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Joo Young Ha, Won Tae Choi, Byung Hyun Kim, Bong Soon Kang, Won Woo Jang, Kyung Rin Kim, Jung Joo Yang, Gi Dong Lee, Kang Joo Kim
  • Publication number: 20110249890
    Abstract: An apparatus for enhancing the visibility of color images includes: a luminance value cumulative distribution calculator that calculates a cumulative distribution function of the number of pixels from a minimum value of luminance values; a baseband signal determining unit that determines baseband signal pixels having luminance values smaller than a threshold level; a luminance compensation value generator that generates luminance compensation values to apply the lower-level luminance compensation values as the pixels have higher-level luminance values, for the pixels having the luminance values larger than the threshold level; a luminance gain generator that determines a luminance gain applied to the luminance compensation values according to a mean luminance values of the input images and the level of the luminance values of the pixels to which the luminance compensation values are applied; and a luminance value enhancing unit that summing the luminance compensation values including the gain with the luminan
    Type: Application
    Filed: December 23, 2010
    Publication date: October 13, 2011
    Applicants: Dong-A University Research Foundation For Industry-Academy Cooperation, SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Joo Hyun Kim, Won Tae Choi, Bong Soon Kang, Sung Mok Lee, Won Woo Jang, Hak Yong Han
  • Publication number: 20100194991
    Abstract: An apparatus for auto white balance includes a histogram generation unit writing respective histograms of Cb values and Cr values with regard to pixels included in an input image frame, a single-tone determination unit comparing respective maximum values of the histograms of Cb values and Cr values with a first threshold value, and determining the input image frame as a single-tone image if at least one of the maximum values is higher than the first threshold value, and an auto white balance gain computation unit computing and an auto white balance gain by using color information of an input image frame and outputting the computed auto white balance gain, wherein if the input image frame is determined to be a single-tone image, the auto white balance gain computation unit outputs an auto white balance gain computed with respect to a previous input image frame.
    Type: Application
    Filed: October 19, 2009
    Publication date: August 5, 2010
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Joo Hyun Kim, Bong Soon Kang, Sung Mok Lee, Won Woo Jang, Kyung Rin Kim, Won Tae Choi, Joo Young Ha
  • Publication number: 20100150440
    Abstract: A color interpolation apparatus includes: a threshold value determining unit that calculates a luminance value of each of a plurality of areas set based on each pixel of a bayer pattern image generated by an image sensor, and determines edge determining threshold values used for determining each edge of the set areas; an edge information calculating unit that calculates pixel value variations in multiple directions of horizontal, vertical, diagonal, and central directions of the corresponding set areas by using pixel values of pixels included in each set area, and calculates edge information regarding each set area by using the calculated multi-directional pixel value variations; an area determining unit that determines a type of an edge present in each set area by using the edge determining threshold values deterred by the threshold value determining unit and the edge information calculated by the edge information calculating unit; and a color interpolation unit that applies a color interpolation filter prev
    Type: Application
    Filed: June 2, 2009
    Publication date: June 17, 2010
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Boo Dong KWAK, Bong Soon Kang, Hyun Soo Kim, Won Woo Jang, Kyung Rin Kim, Won Tae Choi, Joo Young Ha
  • Publication number: 20100014771
    Abstract: Provided is an apparatus for improving the sharpness of an image. The apparatus includes an edge detector, an effective edge judging unit, an effective edge classifying unit, an isolated edge judging unit, and a 2-D HPF applying unit. The edge detector calculates an edge value using brightness relation with neighboring pixels with respect to each of pixels of an input image. The effective edge judging unit determines effective edge pixels. The effective edge classifying unit determines weak edge pixels and strong edge pixels. The isolated edge judging unit judges an isolated edge pixel included in an isolated edge. The 2-D HPF applying unit applies a first 2-D HPF to the weak edge pixels, and applies a second 2-D HPF to the strong edge pixels to generate edge strengthening values. The edge strengthening value applying unit adds the edge strengthening values to brightness values of the respective pixels of the input image.
    Type: Application
    Filed: November 21, 2008
    Publication date: January 21, 2010
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Joo Hyun KIM, Bong Soon KANG, Hyun Soo KIM, Won Woo JANG, Kyung Rin KIM, Won Tae CHOI, Boo Dong KWAK
  • Publication number: 20090226083
    Abstract: A Two-Dimensional (2D) image segmentation apparatus for segmenting pixels of a progressive input 2D image includes a group information storing unit storing information of pixel groups including a plurality of adjacent pixels; a pixel determining unit determining coordinates of an input pixel, and determining whether the input pixel is an effective pixel for segmentation; a group scanning unit scanning a adjacent pixel group disposed in a scan range preset from the effective pixel in the group storing unit when the input pixel is determined as the effective pixel by the pixel determining unit; and a group information updating unit updating information of a pixel group stored in the group information storing unit according to whether there is the scanned adjacent pixel group and a pixel group including an input pixel preceding the effective pixel. Moreover, a method is provided that removes red-eye using area information of a pixel group determined by the segmentation apparatus.
    Type: Application
    Filed: November 19, 2008
    Publication date: September 10, 2009
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD
    Inventors: Kang Joo KIM, Bong Soon KANG, Suk Chan KIM, Won Woo JANG, Sung Jin LEE, Jung Hwan PARK, Hak Sun KIM, Won Tae CHOI, Boo Dong KWAK
  • Publication number: 20090136127
    Abstract: There is provided an apparatus for removing color noise including: a color interpolation unit performing color interpolation on a bayer pattern image output from an image sensor; a high-pass filter unit performing high-pass filtering on each of the pixels of the bayer pattern image to generate high-pass filtered values of each of the pixels; a high frequency region determining unit comparing pixel values of a target pixel, from which color noise is removed, and pixels adjacent to the target pixel with the high-pass filtered values to determine whether the target pixel is included in a high frequency region; and a color noise region determining unit using differences between color values of the target pixel interpolated by the color interpolation unit and determining whether the target pixel is included in a color noise region when it is determined that the target pixel is included in the high frequency region.
    Type: Application
    Filed: August 8, 2008
    Publication date: May 28, 2009
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Boo Dong KWAK, Bong Soon KANG, Joo Young HA, Sung Mok LEE, Won Woo JANG, Won Tae CHOI, Joo Hyun KIM
  • Publication number: 20090083359
    Abstract: Provided is a square root calculation apparatus. The apparatus includes a section judgment unit, a coefficient storing unit, and an adder. The section judgment unit stores information regarding a plurality of sections obtained by dividing an entire range of an input value into predetermined intervals, and judges one of the sections to which the input value belongs when the input value is input. The coefficient storing unit stores, in advance, first-order term coefficients and constant terms of first-order approximate equations obtained by approximating square root curves for respective sections, multiplies a first-order term coefficient of the first-order approximate equation in the section to which the input value belongs, by the input value to output a first-order term, and outputs a constant term in the section to which the input value belongs. The adder adds the first-order term and the constant term output from the coefficient storing unit to calculate an approximated square root value.
    Type: Application
    Filed: September 16, 2008
    Publication date: March 26, 2009
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Kang Joo KIM, Bong Soon KANG, Won Woo JANG, Hyun Soo KIM, Won Tae CHOI
  • Publication number: 20080285877
    Abstract: Provided are an apparatus for removing ringing noise and an apparatus for removing noise. The apparatuses includes a representative value setting block dividing pixel data in one block including a plurality of pixel data into two groups through a K-means algorithm and setting a representative value in each of the groups; a parameter generator block calculating intervals and approaches between all the pixel data in the block and a pair of the representative values; and a correction block correcting an inputted pixel data value using the intervals and the approaches.
    Type: Application
    Filed: May 15, 2008
    Publication date: November 20, 2008
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Boo Dong KWAK, Bong Soon Kang, Won Woo Jang, Hak Sun Kim, Joo Hyun Kim, Won Tae Choi