Signal coding and decoding with pre- and post-processing
    2.
    发明公开
    Signal coding and decoding with pre- and post-processing 审中-公开
    Signalkodierung und -dekodierung mittels Vor- und Nachverarbeitung

    公开(公告)号:EP1840875A1

    公开(公告)日:2007-10-03

    申请号:EP06006924.2

    申请日:2006-03-31

    IPC分类号: G10L19/14 H04N7/26

    摘要: The present invention relates to the field of data compression. More particularly, the present invention relates to the pre-processing which is applied to a signal before it is encoded and to the post-processing of a signal after it is decoded. The present invention provides a pre-processor for signals to be encoded comprising a filtering device for filtering a signal with one or more filters and a providing device for providing information about the filtering process. The present invention further provides a post-processor for previously filtered, encoded and decoded signals comprising an information retrieving device for retrieving information about the filtering process and an inverse filtering device for inverse filtering the decoded signal based on the retrieved information.

    摘要翻译: 本发明涉及数据压缩领域。 更具体地说,本发明涉及在其被编码之前应用于信号的预处理和对其进行解码之后的信号的后处理。 本发明提供一种用于要编码的信号的预处理器,包括用于利用一个或多个滤波器对信号进行滤波的滤波装置和用于提供关于滤波处理的信息的提供装置。 本发明还提供了一种用于先前滤波的,编码和解码的信号的后处理器,包括用于检索关于滤波处理的信息的信息检索装置和用于基于检索到的信息对解码信号进行反向滤波的逆滤波装置。

    Method for processing digital image data
    3.
    发明公开
    Method for processing digital image data 有权
    Verfahren zur Verarbeitung数位板Bilddaten

    公开(公告)号:EP1821257A1

    公开(公告)日:2007-08-22

    申请号:EP06003044.2

    申请日:2006-02-15

    发明人: Lei, Zhichun

    IPC分类号: G06T5/00

    摘要: The present invention relates to a method for processing digital image data (ID), wherein the process of multi rate, multi resolution and/or multi scale signal processing is involved in order to realize a respective multi rate, multi resolution and/or multi scale sharpness enhancement with respect to said image data (ID).

    摘要翻译: 本发明涉及一种处理数字图像数据(ID)的方法,其中涉及多速率,多分辨率和/或多尺度信号处理的过程,以便实现相应的多速率,多分辨率和/或多尺度 相对于所述图像数据(ID)的锐度增强。

    Adaptive histogram equalization for images with strong local contrast
    4.
    发明公开
    Adaptive histogram equalization for images with strong local contrast 审中-公开
    自适应直方图

    公开(公告)号:EP1840831A1

    公开(公告)日:2007-10-03

    申请号:EP06006925.9

    申请日:2006-03-31

    发明人: Lei, Zhichun

    IPC分类号: G06T5/40

    摘要: The present invention relates to a method, apparatus and computer program product for contrast enhancement of images based on adaptive histogram equalization. In particular it relates to preventing adaptive histogram equalization from causing fading artifacts and object extension artifacts. An adaptive histogram equalization method is provided comprising the steps of dividing an image into regions of pixels, determining structures of local pixel value differences of a predefined strength of the image, building for every region a histogram of the pixel values based on the determined structures of local pixel value differences and mapping pixel values of each region based on the histogram corresponding to the region.

    摘要翻译: 本发明涉及一种基于自适应直方图均衡的图像对比度增强的方法,装置和计算机程序产品。 特别地,它涉及防止自适应直方图均衡引起衰落伪影和对象延伸伪像。 提供一种自适应直方图均衡方法,包括以下步骤:将图像划分为像素区域,确定图像的预定强度的局部像素值差异的结构,基于所确定的结构的结构为每个区域构建像素值的直方图 局部像素值差异,并且基于对应于该区域的直方图来映射每个区域的像素值。

    Method for classifying a signal
    5.
    发明公开
    Method for classifying a signal 有权
    Verfahren zur Klassifizierung eines信号

    公开(公告)号:EP1821417A1

    公开(公告)日:2007-08-22

    申请号:EP06003045.9

    申请日:2006-02-15

    IPC分类号: H04B1/10

    CPC分类号: G10L25/48 G10L21/02

    摘要: The present invention relates to a method for classifying a signal (S). An intermediate signal (IS) is decimated in order to obtain a processed signal (PS) as a new intermediate signal (IS). A processed signal (PS) is compared with respect to the signal (S) to be classified to thereby generate comparison data (CompDAT). Based on the comparison data (CompDAT) said signal (S) to be classified is classified, thereby classification data (ClassDAT) are generated.

    摘要翻译: 本发明涉及一种用于对信号(S)进行分类的方法。 抽取中间信号(IS)以获得作为新的中间信号(IS)的处理信号(PS)。 处理信号(PS)相对于被分类的信号(S)进行比较,从而生成比较数据(CompDAT)。 根据比较数据(CompDAT),对要分类的信号(S)进行分类,生成分类数据(ClassDAT)。

    Motion and scene change detection using color components
    7.
    发明公开
    Motion and scene change detection using color components 审中-公开
    Bewegungsdetektion undSzenenänderungserkennungmittels Farbkomponenten

    公开(公告)号:EP1924097A1

    公开(公告)日:2008-05-21

    申请号:EP06124054.5

    申请日:2006-11-14

    IPC分类号: H04N7/26

    摘要: The present invention relates to the fields of motion detection, scene change detection and temporal domain noise reduction. Especially, the present invention relates to a device, a method and a software for detecting motion and/or scene change in a sequence of image frames. The device for detecting motion and/or scene change in a sequence of image frames comprises a difference generator adapted to calculate one or more differences between values of pixels of separate image frames, the pixel values comprising color information, and a discriminator for providing an indication whether the calculated one or more pixel value differences correspond to noise or correspond to image content based on the one or more pixel value differences.

    摘要翻译: 本发明涉及运动检测,场景变化检测和时域降噪的领域。 特别地,本发明涉及用于检测图像帧序列中的运动和/或场景变化的装置,方法和软件。 用于检测图像帧序列中的运动和/或场景变化的装置包括差分发生器,其适于计算分离图像帧的像素值之间的一个或多个差异,包括颜色信息的像素值以及用于提供指示的鉴别器 所计算的一个或多个像素值差是否对应于噪声或者对应于基于所述一个或多个像素值差异的图像内容。