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    • 2. 发明授权
    • Image coding apparatus, digest image preparing apparatus and method
    • 图像编码装置,摘要图像准备装置和方法
    • US07457468B2
    • 2008-11-25
    • US10890262
    • 2004-07-14
    • Shigeki HigashijimaYukio FujiiKoichi Terada
    • Shigeki HigashijimaYukio FujiiKoichi Terada
    • G06K9/36H04N7/12
    • H04N19/61H04N19/51
    • A digest image preparation apparatus includes an image coding circuit for receiving a moving picture to output a coded image obtained by coding the moving picture and extracting a certaing feature parameters produced upon the coding to be outputted, a feature vector computation circuit for receiving the feature parameters to output feature vectors of image frames defined in n dimensions and a curve simplification circuit for simplifying loci generated by arranging the n-dimensional feature vectors outputted by the feature vector computation circuit in time series manner to output ranking information. It then becomes possible to reduce a necessary cost for the image coding and a ranking information calculation.
    • 摘要图像准备装置包括图像编码电路,用于接收运动图像以输出通过对运动图像进行编码而获得的编码图像,并提取在要输出的编码时产生的证明特征参数;特征矢量计算电路,用于接收特征参数 输出以n维定义的图像帧的特征矢量和曲线简化电路,用于简化通过以时间序列方式布置由特征矢量计算电路输出的n维特征向量而产生的轨迹,以输出排序信息。 然后,可以减少图像编码所需的成本和排序信息的计算。
    • 3. 发明授权
    • Digital-watermark-embedding and picture compression unit
    • 数字水印嵌入和图像压缩单元
    • US07352877B2
    • 2008-04-01
    • US10620603
    • 2003-07-17
    • Yoshifumi FujikawaYukio FujiiKoichi Terada
    • Yoshifumi FujikawaYukio FujiiKoichi Terada
    • G06K9/00
    • G06T1/0057G06T1/0028G06T2201/0051G06T2201/0061
    • In order to avoid content deteriorations caused by embedment of a digital watermark into a moving picture, a process to search a picture for a motion and a process to filter a picture for medical care must be carried out, raising a processing cost. It is thus difficult to implement equipment for processing such pictures at a low cost. In a compound apparatus for encoding compressed code of a moving picture by employing a unit for embedding a digital watermark into a picture, a digital-watermark embedment quantity is determined by using a motion vector and a quantization parameter in a process to embed a digital watermark into the picture. It is thus no longer necessary to carry out the process to search a picture for a motion and the process to filter a picture for medical care for embedment of a digital watermark so that the cost of the entire apparatus can be reduced substantially.
    • 为了避免将数字水印嵌入到运动图像中引起的内容恶化,必须执行搜索图片以进行运动的处理和用于过滤用于医疗的图片的处理,从而提高处理成本。 因此难以实现以低成本处理这样的图像的设备。 在通过采用用于将数字水印嵌入图像的单元来编码运动图像的压缩码的复合装置中,在嵌入数字水印的处理中通过使用运动矢量和量化参数来确定数字水印嵌入量 进入图片。 因此,不再需要执行搜索图像以进行运动的处理以及用于过滤用于医疗的图像以用于嵌入数字水印的处理,使得可以显着降低整个装置的成本。