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    Adaptive image data compression
    24.
    发明授权
    Adaptive image data compression 有权
    自适应图像数据压缩

    公开(公告)号：US06724817B1

    公开(公告)日：2004-04-20

    申请号：US09588266

    申请日：2000-06-05

    申请人： Thomas Albert Simpson ,  Yi Hu

    发明人： Thomas Albert Simpson ,  Yi Hu

    IPC分类号： H04N712

    CPC分类号： H04N1/333 ,  H04N19/15 ,  H04N19/152 ,  H04N19/176 ,  H04N19/18 ,  H04N19/196 ,  H04N19/60

    摘要： The invention relates to a method and apparatus for compressing an image data signal. The apparatus includes a compression control module arranged to eliminate frequency components produced from the image data signal which have a magnitude less than a threshold value. The apparatus compares the volume of the compressed image data signal with a target volume and selects to increase or decrease the applied compression level depending on the outcome of the comparison. The compression level is increased by increasing the threshold value and deacreased by decreasing the threshold value. The compression level, or ratio, is thus adaptable in real-time in order to meet a target volume for the compressed image. This is particularly advantageous in applications where, for example, the compressed image signal is to be transmitted over a fixed bandwidth link. The method and apparatus of the invention are particularly suitable for use in the implementation of the JPEG basline image compression standard.

    摘要翻译： 本发明涉及一种压缩图像数据信号的方法和装置。 该装置包括压缩控制模块，该压缩控制模块被布置成消除由图像数据信号产生的频率分量，其幅度小于阈值。 该装置将压缩图像数据信号的体积与目标体积进行比较，并且根据比较的结果选择增加或减少所应用的压缩等级。 通过增加阈值来增加压缩级别，并通过降低阈值来消除压缩级别。 因此，压缩级别或比率可以实时适应，以便满足压缩图像的目标体积。 这在例如压缩图像信号将通过固定带宽链路传输的应用中特别有利。 本发明的方法和装置特别适用于实现JPEG基线图像压缩标准。

    METHOD, APPARATUS, AND PROGRAM FOR DETECTING OBJECT
    26.
    发明申请
    METHOD, APPARATUS, AND PROGRAM FOR DETECTING OBJECT 有权
    用于检测对象的方法，装置和程序

    公开(公告)号：US20110019920A1

    公开(公告)日：2011-01-27

    申请号：US12921502

    申请日：2009-04-01

    申请人： Yi Hu

    发明人： Yi Hu

    IPC分类号： G06K9/46

    CPC分类号： G06K9/00261 ,  G06K9/00362 ,  G06K9/3241

    摘要： A region where a detecting target object exists is extracted by a comparison between an evaluated value indicating a probability that the detecting target object exists and a threshold, through the process of producing a differential image between different frames in plural frames constituting a continuous image, of setting an average value in an averaging region extended around each pixel of the differential image as a new value of each pixel, of obtaining the evaluated value by applying a filter that acts on a search region on an image to a search region extended around a search pixel that is extracted by comparing the new value and the threshold, on the differential image.

    摘要翻译： 通过通过在构成连续图像的多个帧中的不同帧之间产生差分图像的处理，通过将表示检测目标对象存在的概率的评估值与阈值之间的比较来提取存在检测目标对象的区域 将在差分图像的每个像素周围延伸的平均区域中的平均值设置为每个像素的新值，通过将对图像上的搜索区域作用的滤波器应用于搜索周围的搜索区域来获得评估值 在差分图像上通过比较新值和阈值提取的像素。