公开(公告)号：US10438328B1

公开(公告)日：2019-10-08

申请号：US15380118

申请日：2016-12-15

Applicant: GOOGLE INC.

Inventor： Jyrki Alakuijala ,  Pascal Massimino ,  Lode Vandevenne

IPC: G06T5/00 ,  G06T7/90

Abstract: A method includes obtaining, at one or more computing devices, an input image, applying an image sharpening process to at least one of one or more chroma components of the input image, subsampling the one or more chroma components of the input image to reduce a spatial resolution of the one or more chroma components of the input image, encoding the input image subsequent to applying the image sharpening process and subsampling, and performing at least one of storing or transmitting the input image subsequent to encoding.

公开(公告)号：US09153017B1

公开(公告)日：2015-10-06

申请号：US14460392

申请日：2014-08-15

Applicant: Google Inc.

Inventor： Andrew Ian Russell ,  Pascal Massimino

IPC: G06K9/00 ,  G06T5/50 ,  G06T5/00 ,  G06T7/40

CPC classification number: H04N1/409 ,  H04N1/6027 ,  H04N9/646 ,  H04N19/154 ,  H04N19/59 ,  H04N19/895

Abstract: A method includes obtaining, at one or more computing devices, an input image; determining a first value of a quality metric for the input image; generating a first chroma subsampled representation of the input image; and generating a reconstructed image based on the chroma subsampled representation. The method also includes determining a second value of the quality metric for the reconstructed image; determining an error value based on the first value of the quality metric and the second value of the quality metric; and generating a second chroma subsampled representation of the input image based in part on the error value.

Abstract translation: 一种方法包括在一个或多个计算设备处获取输入图像; 确定输入图像的质量度量的第一值; 产生所述输入图像的第一色度子采样表示; 以及基于色度子采样表示来生成重建图像。 该方法还包括确定重建图像的质量度量的第二值; 基于质量度量的第一值和质量度量的第二值确定误差值; 以及部分地基于所述误差值来生成所述输入图像的第二色度子采样表示。