公开(公告)号：US08121421B2

公开(公告)日：2012-02-21

申请号：US12088643

申请日：2005-09-28

申请人： Kristofer Dovstam ,  Rickard Sjöberg ,  Joel Askelöf

发明人： Kristofer Dovstam ,  Rickard Sjöberg ,  Joel Askelöf

IPC分类号： G06K9/46

CPC分类号： H04N21/435 ,  H04N19/40 ,  H04N19/46 ,  H04N19/86 ,  H04N19/895 ,  H04N21/234363 ,  H04N21/234372 ,  H04N21/235 ,  H04N21/25825 ,  H04N21/25833 ,  H04N21/2662 ,  H04N21/6332 ,  H04N21/6336 ,  H04N21/654 ,  H04N21/6543 ,  H04N21/6582 ,  H04N21/8543

摘要： The invention relates to media management and combats media degradations arising when transcoding the media. The invention solves this by—generating processing hints based on the media transcoding. The hints are employed for controlling a post-transcoding processing of the transcoded media content in connection with rendering the media. The hints and this controlled processing increases the user-perceived quality when rendering the media by mitigating the media degradations caused by the transcoding. The processing hints could specify how the actual transcoding was performed by including values of the employed transcoding parameters or information of the alterations to the media caused by transcoding. Furthermore, instructions or commands for appropriate post-transcoding processing could also be processing hints according to the invention.

摘要翻译： 本发明涉及媒体管理并且抵抗当对媒体进行转码时产生的媒体劣化。 本发明解决了基于媒体转码的副产生处理提示。 这些提示用于控制与再现媒体有关的代码转换的媒体内容的后转码处理。 当通过减轻由转码引起的媒体劣化来渲染媒体时，提示和该受控处理增加了用户感知质量。 处理提示可以通过将所采用的转码参数的值或由代码转换引起的变更的信息包括在内来指定实际的代码转换。 此外，用于适当的后转码处理的指令或命令也可以是根据本发明的处理提示。

公开(公告)号：US08260056B2

公开(公告)日：2012-09-04

申请号：US12064213

申请日：2005-08-19

申请人： Joel Askelöf ,  Henric Axelsson ,  Kristofer Dovstam

发明人： Joel Askelöf ,  Henric Axelsson ,  Kristofer Dovstam

IPC分类号： G06K9/48

CPC分类号： G06T3/403

摘要： The invention teaches a method of positioning a first image having a first image format into a second image comprising multiple image blocks and having a second image format. A straight boundary of at least one image block in the second image is identified. The first image is positioned into the second image by aligning an edge of the first image with the identified straight boundary. Alternatively, a block row or column of the first image can be aligned with the straight boundary but then in such a way that an edge of the first image parallel to the block row or column is aligned with a boundary of a row or column of image blocks in the second image. This image positioning reduces any bleeding artifacts and the number of bits required for representing the image during encoding.

摘要翻译： 本发明教导了一种将具有第一图像格式的第一图像定位到包括多个图像块并具有第二图像格式的第二图像中的方法。 识别第二图像中的至少一个图像块的直边界。 通过将第一图像的边缘与所识别的直边界对准，将第一图像定位到第二图像中。 或者，第一图像的块行或列可以与直边界对齐，但是以使得与块行或列平行的第一图像的边缘与图像的行或列的边界对准 第二个图像中的块。 此图像定位可减少编码期间出现的任何出血伪像和表示图像所需的位数。

公开(公告)号：US07848597B2

公开(公告)日：2010-12-07

申请号：US11517563

申请日：2006-09-08

申请人： Jacob Ström ,  Joel Askelöf

发明人： Jacob Ström ,  Joel Askelöf

IPC分类号： G06K9/32

CPC分类号： G06T3/4023

摘要： In an image scaling method, an image (10) having an original row/column resolution NO is scaled into a scaled image (30) having a target row/column resolution NT. A filter set comprising α filters is provided, where α being equal to a quotient of the target resolution NT and a common denominator k of the original resolution NO and the target resolution NT. The common denominator k is a positive number larger than one. For at least one row/column (16/18) of image elements (12), a filtered image element (32) of the scaled image (30) is formed, for each filter in the filter set, by filtering at least one image element (12) of the at least one row/column (16/18) using the filter. This image element formation is repeated up to k times over the at least row/column (16/18) to form a scaled row/column (36/38) of image elements (32) of the scaled image (30).

摘要翻译： 在图像缩放方法中，具有原始行/列分辨率NO的图像（10）被缩放为具有目标行/列分辨率NT的缩放图像（30）。 提供了包括α滤波器的滤波器组，其中α等于目标分辨率NT的商和原始分辨率NO和目标分辨率NT的公分母k。 公分母k是大于1的正数。 对于图像元素（12）的至少一个行/列（16/18），通过对至少一个图像进行滤波，形成对于滤波器组中的每个滤波器的缩放图像（30）的滤波图像元素（32） 使用过滤器的至少一行/列（16/18）的元件（12）。 该图像元素形成在至少行/列（16/18）上重复多达k次以形成缩放图像（30）的图像元素（32）的缩放行/列（36/38）。