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    • 82. 发明公开
    • IMAGE TRANSMISSION SYSTEM, IMAGE TRANSMISSION UNIT AND METHOD FOR DESCRIBING TEXTURE OR A TEXTURE-LIKE REGION
    • 图像传输系统,图像传输单元和方法描述纹理和纹理相似区域的
    • EP1395954A2
    • 2004-03-10
    • EP02747320.6
    • 2002-05-23
    • MOTOROLA, INC.THE CHANCELLOR, MASTERS AND SCHOLARSOF THE UNIVERSITY OF OXFORD
    • KADIR, Timor,Woolfson College OxfordHOBSON,, Paola, Marcella
    • G06T7/40
    • G06K9/4647G06T7/44
    • A method for characterising texture or a texture-like region in an image includes the steps of obtaining saliency values (104) of an image or set of images and applying a threshold to the saliency values (108), to remove the less salient features. A three dimensional shape, for example a cuboid of a predefines size, is generated (210) and saliency space sampled by moving the cuboid across spatial dimensions of the saliency space. An estimation of z probablility density function of scales within that sample space is generated and texture or a texture-like region in the saliency space is characterised using the estimation. This provides a method by which texture can be classified within an image to aid image interpretation. In particular, the texture is classified independent of scale, orientation and illumination. The method is particularly useful for texture classification problems where: the scale is unknown, the scale may vary, or a general scene description is required.
    • 一种用于字符伊辛纹理或纹理状区域的图像中的方法包括:获得图像的显着性值(104)或图像组和将阈值应用到显着性值(108)以除去少的显着特征的步骤。 一种三维形状,例如一个预定义尺寸的长方体,生成(210)和显着性的空间通过移动横跨显着空间的空间尺寸的长方体采样。 生成样本空间内做规模的这种probablility密度函数和纹理或在显着的空间的纹理状区域的估计是使用估计特征的。 这提供了通过该纹理可被分类的图像中,以帮助图像判读的方法。 特别地,该纹理是规模,取向和照明分类独立。 该方法对于纹理分类问题是特别有用的,其中:所述刻度是未知的,规模可能会发生变化,或者是必需的一般场景描述。
    • 85. 发明公开
    • TELEPHONE APPARATUS AND A COMMUNICATION METHOD USING SUCH APPARATUS
    • 手机部门
    • EP1391101A1
    • 2004-02-25
    • EP02743028.9
    • 2002-05-13
    • Motorola Limited
    • SHAHAF, MarkOR-SHRAGA, BoazAVAYU, Izak
    • H04M1/58H04M1/60H04M9/08
    • H04M9/08
    • In accordance with a first aspect of the present invention there is provided a telephone apparatus including a transmitter portion and a receiver portion, an input transducer for converting input audio signals into electrical signals, a connectable input link between the input transducer and the transmitter portion to deliver whenconnected an input electrical signal to the transmitter portion to be transmitted by the transmitter portion, an output transducer for converting an output electrical signal into an audio signal and a connectable output link between the receiver portion and the output transducer for delivering when connected an output signal to the output transducer, optionally an echo cancellation circuitry portion adapted to sample the output signal and produce an echo replica signal, optionally a mixer included in the input link for mixing an echo replica signal produced by the echo cancellation circuit with an input signal produced by the input transducer, and an echo suppression circuitry portion including detector means for producing a first magnitude signal which represents a magnitude property of a first smple of an output signal So in the output link and a second magnitude signal which represents a magnitude property of a second sample of an input electrical signal Si in the input link between the mixer and the transmitter portion, an analyser, connected to receive inputs comprising the first and second magnitude signals from the detector means, for measuring a relationship between thefirst and second magnitude signals and for producing a control signal when the relationship exceeds a threshold, wherein the detector means is operable periodically to analyse characteristics of the signal So to estimate the amount of background noise in the signal So and to pass as an input to the analyser a signal representing the estimated amount of backgroudn noise wherein the threshold above which the analyser produces an output control signal is set adaptively by the analyser dependent on the estimated background noise.