公开(公告)号：US09549199B2

公开(公告)日：2017-01-17

申请号：US15052198

申请日：2016-02-24

Applicant: Core Wireless Licensing S.a.r.l.

Inventor： Kemal Ugur ,  Jani Lainema ,  Antti Hallapuro

IPC: H04N11/02 ,  H04N19/53 ,  H04N19/533 ,  H04N19/176

CPC classification number: H04N19/53 ,  G06T7/238 ,  H04N5/145 ,  H04N19/105 ,  H04N19/176 ,  H04N19/523 ,  H04N19/533

Abstract: An apparatus for providing motion estimation for video encoding includes a selection element and a processing element. The selection element is configured to select a subset including less than all of candidate pixel locations from among a plurality of candidate pixel locations used for motion vector determination based on a relationship between a best candidate pixel location of a first level of accuracy and a best candidate pixel location of a second level of accuracy. The processing element is configured to process an input video sequence to determine a motion vector at the first level of accuracy, to refine the motion vector at the second level of accuracy, and to determine the motion vector at a third level of accuracy using only the subset of candidate pixel locations.

Abstract translation: 一种用于提供用于视频编码的运动估计的装置包括选择元件和处理元件。 选择元件被配置为基于第一准确度水平的最佳候选像素位置与最佳候选者之间的关系，从用于运动矢量确定的多个候选像素位置中选择包括小于所有候选像素位置的子集 像素位置具有第二级准确度。 所述处理元件被配置为处理输入视频序列以确定所述第一准确度水平的运动矢量，以精确的第二精度级别的运动矢量，并且仅使用所述精度的第三精度水平确定所述运动矢量 候选像素位置的子集。

公开(公告)号：US09769490B2

公开(公告)日：2017-09-19

申请号：US13962009

申请日：2013-08-08

Applicant: Core Wireless Licensing S.a.r.l.

Inventor： Dmytro Rusanovskyy ,  Kemal Ugur

IPC: H04N19/523 ,  H04N7/12 ,  H04N19/117 ,  H04N19/136 ,  H04N19/63 ,  H04N19/42

CPC classification number: H04N19/523 ,  H04N7/12 ,  H04N19/105 ,  H04N19/117 ,  H04N19/136 ,  H04N19/172 ,  H04N19/182 ,  H04N19/42 ,  H04N19/436 ,  H04N19/63

Abstract: In digital video image encoding and decoding, a filter type is selected based on symmetrical properties of the images and coefficient values of an interpolation filter are calculated based on the selected filter type. Coefficient values, filter tap-length and selected filter-type are provided in the encoded video data. Coefficient values are also calculated based on a prediction signal representative of the difference between a video frame and a reference image. The prediction signal is calculated from the reference image based on a predefined base filter and motion estimation performed on the video frame. The predefined base filter has fixed coefficient values. Coefficient values are selected from interpolation of pixel values in a selected image segment in the video frame. Symmetry properties of images can be a vertical symmetry, a horizontal symmetry and a combination thereof, so that only a portion of the filter coefficients are coded.

公开(公告)号：US20160295231A1

公开(公告)日：2016-10-06

申请号：US15052198

申请日：2016-02-24

Applicant: Core Wireless Licensing S.a.r.l.

Inventor： Kemal Ugur ,  Jani Lainema ,  Antti Hallapuro

IPC: H04N19/53 ,  H04N19/176 ,  H04N19/533

CPC classification number: H04N19/53 ,  G06T7/238 ,  H04N5/145 ,  H04N19/105 ,  H04N19/176 ,  H04N19/523 ,  H04N19/533

Abstract: An apparatus for providing motion estimation for video encoding includes a selection element and a processing element. The selection element is configured to select a subset including less than all of candidate pixel locations from among a plurality of candidate pixel locations used for motion vector determination based on a relationship between a best candidate pixel location of a first level of accuracy and a best candidate pixel location of a second level of accuracy. The processing element is configured to process an input video sequence to determine a motion vector at the first level of accuracy, to refine the motion vector at the second level of accuracy, and to determine the motion vector at a third level of accuracy using only the subset of candidate pixel locations.

Abstract translation: 用于提供用于视频编码的运动估计的装置包括选择元件和处理元件。 选择元件被配置为基于第一准确度水平的最佳候选像素位置与最佳候选者之间的关系，从用于运动矢量确定的多个候选像素位置中选择包括小于所有候选像素位置的子集 像素位置具有第二级准确度。 所述处理元件被配置为处理输入视频序列以确定所述第一准确度水平的运动矢量，以精确的第二精度级别的运动矢量，并且仅使用所述精度的第三精度水平确定所述运动矢量 候选像素位置的子集。