公开(公告)号：US20170094272A1

公开(公告)日：2017-03-30

申请号：US15372686

申请日：2016-12-08

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

Inventor： Dmytro RUSANOVSKYY ,  Kemal UGUR

IPC: H04N19/117 ,  H04N19/105 ,  H04N19/523 ,  H04N19/436

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：US20140037006A1

公开(公告)日：2014-02-06

申请号：US13962009

申请日：2013-08-08

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

Inventor： Dmytro RUSANOVSKYY ,  Kemel UGUR

IPC: H04N7/36

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.

Abstract translation: 在数字视频图像编码和解码中，基于图像的对称属性选择滤波器类型，并且基于所选择的滤波器类型来计算内插滤波器的系数值。 在编码的视频数据中提供系数值，滤波器抽头长度和选定的滤波器类型。 也可以基于表示视频帧和参考图像之间的差的预测信号来计算系数值。 基于对视频帧执行的预定义的基本滤波器和运动估计，从参考图像计算预测信号。 预定义的基本滤波器具有固定的系数值。 系数值从视频帧中所选图像段中的像素值的内插中选择。 图像的对称属性可以是垂直对称性，水平对称性及其组合，使得只有一部分滤波器系数被编码。