公开(公告)号：US20150245058A1

公开(公告)日：2015-08-27

申请号：US14632132

申请日：2015-02-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Alexander ALSHIN ,  Elena ALSHINA ,  Jianle CHEN ,  Woo-jin HAN ,  Nikolay SHLYAKHOV ,  Yoon-mi HONG

IPC: H04N19/523 ,  H04N19/59 ,  H04N19/82 ,  H04N19/513

CPC classification number: H04N19/86 ,  G06F17/17 ,  G06F17/175 ,  G06T3/4007 ,  G06T5/002 ,  H04N19/117 ,  H04N19/182 ,  H04N19/186 ,  H04N19/42 ,  H04N19/43 ,  H04N19/521 ,  H04N19/523 ,  H04N19/59 ,  H04N19/635 ,  H04N19/80 ,  H04N19/82

Abstract: Provided are a method of interpolating an image by determining interpolation filter coefficients, and an apparatus for performing the same. The method includes: differently selecting an interpolation filter, from among interpolation filters for generating at least one sub-pel-unit pixel value located between integer-pel-unit pixels, based on a sub-pel-unit interpolation location and a smoothness; and generating the at least one sub-pel-unit pixel value by interpolating, using the selected interpolation filter, pixel values of the integer-pel-unit pixels.

公开(公告)号：US20160151036A1

公开(公告)日：2016-06-02

申请号：US14956237

申请日：2015-12-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Woo-hyun NAM ,  Yong-sup PARK ,  Jae-sung LEE ,  Yun-sub JUNG ,  Yoon-mi HONG

IPC: A61B6/00

CPC classification number: A61B6/469 ,  A61B6/037 ,  A61B6/4441 ,  A61B6/488 ,  A61B6/5205 ,  G06F19/00 ,  G06T11/005 ,  G06T2211/424 ,  G06T2211/432

Abstract: A medical imaging apparatus includes a data acquirer configured to acquire measured data acquired by detecting an X-ray transmitted by an X-ray source to an object, and an image processor configured to acquire an initial image based on the measured data, alternately estimate region of interest (ROI)-outside measured data and ROI-inside measured data based on the measured data and the initial image, and acquire a reconstructed image based on the ROI-inside measured data.

Abstract translation: 医疗成像装置包括：数据获取器，被配置为获取通过检测由X射线源发送的X射线获得的测量数据到对象;以及图像处理器，被配置为基于测量数据获取初始图像，交替地估计区域 （ROI） - 基于测量数据和初始图像的测量数据和ROI内部测量数据，并且基于ROI内部测量数据获取重建图像。

公开(公告)号：US20150237359A1

公开(公告)日：2015-08-20

申请号：US14632176

申请日：2015-02-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Alexander ALSHIN ,  Elena ALSHINA ,  Jianle CHEN ,  Woo-jin HAN ,  Nikolay SHLYAKHOV ,  Yoon-mi HONG

IPC: H04N19/43 ,  H04N19/523 ,  H04N19/186 ,  H04N19/82 ,  H04N19/117 ,  H04N19/182 ,  H04N19/59

CPC classification number: H04N19/86 ,  G06F17/17 ,  G06F17/175 ,  G06T3/4007 ,  G06T5/002 ,  H04N19/117 ,  H04N19/182 ,  H04N19/186 ,  H04N19/42 ,  H04N19/43 ,  H04N19/521 ,  H04N19/523 ,  H04N19/59 ,  H04N19/635 ,  H04N19/80 ,  H04N19/82

Abstract: Provided are a method of interpolating an image by determining interpolation filter coefficients, and an apparatus for performing the same. The method includes: differently selecting an interpolation filter, from among interpolation filters for generating at least one sub-pel-unit pixel value located between integer-pel-unit pixels, based on a sub-pel-unit interpolation location and a smoothness; and generating the at least one sub-pel-unit pixel value by interpolating, using the selected interpolation filter, pixel values of the integer-pel-unit pixels.

公开(公告)号：US20140198996A1

公开(公告)日：2014-07-17

申请号：US14218494

申请日：2014-03-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN ,  Nikolay SHLYAKHOV ,  Byeong-doo CHOI ,  Yoon-mi HONG ,  Woo-jin HAN ,  Tammy LEE

IPC: G06T3/40

CPC classification number: G06T3/4007 ,  G06F17/175 ,  H04N7/014 ,  H04N19/117 ,  H04N19/182 ,  H04N19/30 ,  H04N19/48 ,  H04N19/523 ,  H04N19/59 ,  H04N19/80

Abstract: Provided are a method and apparatus for interpolating an image. The method includes: selecting a first filter, from among a plurality of different filters, for interpolating between pixel values of integer pixel units, according to an interpolation location; and generating at least one pixel value of at least one fractional pixel unit by interpolating between the pixel values of the integer pixel units by using the selected first filter.

Abstract translation: 提供了一种用于内插图像的方法和装置。 该方法包括：根据插值位置，从多个不同滤波器中选择第一滤波器，用于在整数像素单元的像素值之间进行内插; 以及通过使用所选择的第一滤波器在整数像素单元的像素值之间进行内插来生成至少一个分数像素单元的至少一个像素值。

公开(公告)号：US20170310965A1

公开(公告)日：2017-10-26

申请号：US15647720

申请日：2017-07-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Woo-jin HAN ,  Elena ALSHINA ,  Jung-hye MIN ,  Alexander ALSHIN ,  Il-koo KIM ,  Nikolay SHLYAKHOV ,  Tammy LEE ,  Sun-il LEE ,  Min-su CHEON ,  Jianle CHEN ,  Vadim SEREGIN ,  Yoon-mi HONG

IPC: H04N19/119 ,  H04N19/61 ,  H04N19/593 ,  H04N19/52 ,  H04N19/50 ,  H04N19/147 ,  H04N19/44 ,  H04N19/196 ,  H04N19/176 ,  H04N19/172 ,  H04N19/96 ,  H04N19/513

CPC classification number: H04N19/50 ,  H04N19/117 ,  H04N19/119 ,  H04N19/139 ,  H04N19/147 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/197 ,  H04N19/30 ,  H04N19/44 ,  H04N19/513 ,  H04N19/52 ,  H04N19/59 ,  H04N19/593 ,  H04N19/61 ,  H04N19/80 ,  H04N19/82 ,  H04N19/86 ,  H04N19/96

Abstract: A method of encoding a video is provided, the method includes: determining a filtering boundary on which deblocking filtering is to be performed based on at least one data unit from among a plurality of coding units that are hierarchically configured according to depths indicating a number of times at least one maximum coding unit is spatially spilt, and a plurality of prediction units and a plurality of transformation units respectively for prediction and transformation of the plurality of coding units, determining filtering strength at the filtering boundary based on a prediction mode of a coding unit to which pixels adjacent to the filtering belong from among the plurality of coding units, and transformation coefficient values of the pixels adjacent to the filtering boundary, and performing deblocking filtering on the filtering boundary based on the determined filtering strength.

公开(公告)号：US20170064314A1

公开(公告)日：2017-03-02

申请号：US15352173

申请日：2016-11-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Yoon-mi HONG ,  Woo-jin HAN

IPC: H04N19/36 ,  H04N19/124 ,  H04N19/63 ,  H04N19/159 ,  H04N19/625 ,  H04N19/61 ,  H04N19/13

CPC classification number: H04N19/36 ,  H04N19/124 ,  H04N19/13 ,  H04N19/159 ,  H04N19/174 ,  H04N19/184 ,  H04N19/40 ,  H04N19/42 ,  H04N19/61 ,  H04N19/625 ,  H04N19/63 ,  H04N19/98

Abstract: Provided are a method and apparatus for encoding a video signal and a method and apparatus for decoding a video signal. The method of encoding the video signal includes: determining an optimum scaling bit depth of the video signal in consideration of a maximum bit number of an intermediate value obtained during transformation of the video signal and a maximum bit precision of the video signal; scaling the video signal according to a local shift value corresponding to a difference between the determined optimum scaling bit depth and an original bit depth of the video signal; and transforming the scaled video signal.

公开(公告)号：US20170042494A1

公开(公告)日：2017-02-16

申请号：US15118691

申请日：2015-02-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Gye-hyun KIM ,  Jae-sung LEE ,  Jae-chool LEE ,  Hae-kyung JUNG ,  Yoon-mi HONG

IPC: A61B6/00 ,  G06T11/00 ,  A61B6/03

CPC classification number: A61B6/5205 ,  A61B6/025 ,  A61B6/032 ,  A61B6/461 ,  A61B6/501 ,  A61B6/502 ,  A61B6/503 ,  A61B6/504 ,  A61B6/5258 ,  A61B6/563 ,  G06T11/003 ,  G06T11/006

Abstract: A computed tomography (CT) apparatus includes a reconstruction unit which reconstructs a first CT image corresponding to a field of view (FOV) by using a first sinogram acquired by a CT scan of an object; and a correction unit which acquires a second sinogram by performing forward projection on the first CT image and acquires a second CT image by using the second sinogram and a third sinogram representing a portion of the object that is not included in the FOV. Thus, the CT apparatus reduces generation of image errors to thereby provide a high-quality reconstructed CT image.

Abstract translation: 计算机断层摄影（CT）装置包括重建单元，其通过使用通过对象的CT扫描获取的第一正弦图来重建与视场对应的第一CT图像（FOV）; 以及校正单元，其通过在第一CT图像上执行向前投影来获取第二正弦图，并且通过使用第二正弦图获取第二CT图像，以及表示不包括在FOV中的对象的一部分的第三正弦图。 因此，CT装置减少图像误差的产生，从而提供高质量的重建CT图像。

公开(公告)号：US20170064316A1

公开(公告)日：2017-03-02

申请号：US15352252

申请日：2016-11-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Yoon-mi HONG ,  Woo-jin HAN

IPC: H04N19/36 ,  H04N19/124 ,  H04N19/63 ,  H04N19/159 ,  H04N19/625 ,  H04N19/61 ,  H04N19/13

CPC classification number: H04N19/36 ,  H04N19/124 ,  H04N19/13 ,  H04N19/159 ,  H04N19/174 ,  H04N19/184 ,  H04N19/40 ,  H04N19/42 ,  H04N19/61 ,  H04N19/625 ,  H04N19/63 ,  H04N19/98

Abstract: Provided are a method and apparatus for encoding a video signal and a method and apparatus for decoding a video signal. The method of encoding the video signal includes: determining an optimum scaling bit depth of the video signal in consideration of a maximum bit number of an intermediate value obtained during transformation of the video signal and a maximum bit precision of the video signal; scaling the video signal according to a local shift value corresponding to a difference between the determined optimum scaling bit depth and an original bit depth of the video signal; and transforming the scaled video signal.

公开(公告)号：US20160045181A1

公开(公告)日：2016-02-18

申请号：US14778864

申请日：2014-03-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yoon-mi HONG ,  Gye-hyun KIM ,  Jae-sung LEE ,  Jae-chool LEE ,  Hae-kyung JUNG

IPC: A61B6/00 ,  A61B6/03

CPC classification number: A61B6/5258 ,  A61B6/032 ,  A61B6/4233 ,  A61B6/52 ,  A61B6/5205 ,  G06T11/006 ,  G06T2211/424

Abstract: Provided is a method for projection and back-projection for method and apparatus for image processing. The method for projection and back-projection includes the steps of: projecting the center of a detector cell included in a detection unit onto a common axis; mapping the boundaries of pixels in a pixel grid onto the common axis; projecting the center of the detector cell included in the detection unit onto the set common axis; and determining a pixel value on the basis of the step for mapping the boundaries of pixels onto the set common axis.

Abstract translation: 提供了一种用于图像处理的方法和装置的投影和反投影的方法。 投影和反投影的方法包括以下步骤：将包括在检测单元中的检测器单元的中心投影到公共轴上; 将像素网格中的像素的边界映射到公共轴上; 将包括在检测单元中的检测器单元的中心投影到设定的公共轴上; 以及基于用于将像素的边界映射到所述公共轴上的步骤来确定像素值。

公开(公告)号：US20150237358A1

公开(公告)日：2015-08-20

申请号：US14632169

申请日：2015-02-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Alexander ALSHIN ,  Elena ALSHINA ,  Jianle CHEN ,  Woo-jin HAN ,  Nikolay SHLYAKHOV ,  Yoon-mi HONG

IPC: H04N19/43 ,  H04N19/523 ,  H04N19/186 ,  H04N19/82 ,  H04N19/117 ,  H04N19/182 ,  H04N19/59

CPC classification number: H04N19/86 ,  G06F17/17 ,  G06F17/175 ,  G06T3/4007 ,  G06T5/002 ,  H04N19/117 ,  H04N19/182 ,  H04N19/186 ,  H04N19/42 ,  H04N19/43 ,  H04N19/521 ,  H04N19/523 ,  H04N19/59 ,  H04N19/635 ,  H04N19/80 ,  H04N19/82

Abstract: Provided are a method of interpolating an image by determining interpolation filter coefficients, and an apparatus for performing the same. The method includes: differently selecting an interpolation filter, from among interpolation filters for generating at least one sub-pel-unit pixel value located between integer-pel-unit pixels, based on a sub-pel-unit interpolation location and a smoothness; and generating the at least one sub-pel-unit pixel value by interpolating, using the selected interpolation filter, pixel values of the integer-pel-unit pixels.

Abstract translation: 提供了一种通过确定内插滤波器系数来内插图像的方法，以及用于执行图像的装置。 该方法包括：基于子像素单位内插位置和平滑度，从用于产生位于整数像素单位像素之间的至少一个子像素单位像素值的内插滤波器中不同地选择内插滤波器; 以及通过使用所选择的内插滤波器内插所述整数像素单位像素的像素值来生成所述至少一个子像素单位像素值。