Computing the Euler number of a binary image
    1.
    发明授权
    Computing the Euler number of a binary image 失效
    计算二进制图像的欧拉数

    公开(公告)号:US07027649B1

    公开(公告)日:2006-04-11

    申请号:US09722982

    申请日:2000-11-27

    IPC分类号: G06K9/46

    CPC分类号: G06K9/52

    摘要: An Euler number representation of a binary image is calculated. The binary image is considered as a series of partial images. The Euler number for each partial image is calculated using properties of runs of zeros and ones in the pixel matrix, and the results are combined together. The operations may be performed sequentially or in parallel. The calculations may be performed using discrete logic components for on-chip VLSI implementations.

    摘要翻译: 计算二进制图像的欧拉数表示。 二进制图像被认为是一系列部分图像。 使用像素矩阵中的零和运行的属性来计算每个部分图像的欧拉数,并将结果组合在一起。 可以顺序地或并行地执行操作。 可以使用用于片上VLSI实现的离散逻辑组件来执行计算。

    Image retrieval using distance measure
    3.
    发明授权
    Image retrieval using distance measure 失效
    使用距离测量的图像检索

    公开(公告)号:US06681060B2

    公开(公告)日:2004-01-20

    申请号:US09817000

    申请日:2001-03-23

    IPC分类号: G06K954

    摘要: A Mahalanobis distance measure is used to identify a query image among plural images in a database. The measure may be used to rank the similarity of one or more images to the query image. A variance-covariance matrix is calculated for all images in the database. The variance-covariance matrix is used to calculate the Mahalanobis distance between the query image and one or more images in the database. A range tree may be used to identify likely image candidates for performing the Mahalanobis distance measurement.

    摘要翻译: 马哈拉诺比斯距离度量用于识别数据库中的多个图像之间的查询图像。 该度量可用于对一个或多个图像与查询图像的相似性进行排序。 对数据库中的所有图像计算方差 - 协方差矩阵。 方差协方差矩阵用于计算查询图像与数据库中一个或多个图像之间的马氏距离。 可以使用范围树来识别用于执行马哈拉诺比斯距离测量的可能的图像候选。