公开(公告)号：JP2011151838A

公开(公告)日：2011-08-04

申请号：JP2011052098

申请日：2011-03-09

Applicant: Apple Inc ,  アップル インコーポレイテッド

Inventor： TONG XIN ,  WU HSI-JUNG ,  PUN THOMAS ,  DUMITRA ADRIANA ,  HASKEL BARIN ,  NORMILE JIM

IPC: H04N7/32

CPC classification number: H04N19/126 ,  H04N19/137 ,  H04N19/14 ,  H04N19/142 ,  H04N19/15 ,  H04N19/152 ,  H04N19/154 ,  H04N19/172 ,  H04N19/176 ,  H04N19/177 ,  H04N19/192

Abstract: PROBLEM TO BE SOLVED: To provide a multi-pass encoding method that encodes several images (e.g., several frames of a video sequence). SOLUTION: An encoding operation (110) that encodes images is iteratively performed. The encoding operation is based on a nominal quantization parameter, which the method uses to compute quantization parameters for the images (132). During several different iterations of the encoding operation, the method uses several different nominal quantization parameters (125). The method stops its iterations (140) when it reaches a terminating criterion (e.g., it identifies an acceptable encoding of the images). COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供对多个图像（例如，视频序列的几个帧）进行编码的多遍编码方法。 解决方案：迭代地执行编码图像的编码操作（110）。 编码操作基于标称量化参数，该方法用于计算图像的量化参数（132）。 在编码操作的几个不同迭代期间，该方法使用几个不同的标称量化参数（125）。 该方法在达到终止标准（例如，其识别图像的可接受编码）时停止其迭代（140）。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：HK1101052A1

公开(公告)日：2007-10-05

申请号：HK07106057

申请日：2007-06-07

Applicant: APPLE INC

Inventor： TONG XIN ,  WU HSI-JUNG ,  PUN THOMAS ,  DUMITRA ADRIANA ,  HASKEL BARIN ,  NORMILE JIM

IPC: H04N20060101

Abstract: Some embodiments of the invention provide a multi-pass encoding method that encodes several images (e.g., several frames of a video sequence). The method iteratively performs an encoding operation that encodes these images (Figure 1, 110). The encoding operation is based on a nominal quantization parameter, which the method uses to compute quantization parameters for the images (132). During several different iterations of the encoding operation, the method uses several different nominal quantization parameters (125). The method stops its iterations (140) when it reaches a terminating criterion (e.g., it identifies an acceptable encoding of the images).

公开(公告)号：EP1762093A4

公开(公告)日：2011-06-29

申请号：EP05773224

申请日：2005-06-24

Applicant: APPLE INC

Inventor： TONG XIN ,  WU HSI-JUNG ,  PUN THOMAS ,  DUMITRA ADRIANA ,  HASKEL BARIN ,  NORMILE JIM

IPC: H04N7/12 ,  H04N7/26

CPC classification number: H04N19/126 ,  H04N19/137 ,  H04N19/14 ,  H04N19/142 ,  H04N19/15 ,  H04N19/152 ,  H04N19/154 ,  H04N19/172 ,  H04N19/176 ,  H04N19/177 ,  H04N19/192