System and method for using a similarity function to perform appearance matching in image pairs
    7.
    发明授权
    System and method for using a similarity function to perform appearance matching in image pairs 有权
    使用相似度函数执行图像对中的外观匹配的系统和方法

    公开(公告)号:US07831074B2

    公开(公告)日:2010-11-09

    申请号:US11539989

    申请日:2006-10-10

    IPC分类号: G06K9/00 G06K9/62 H04N5/225

    摘要: The present invention is directed to a method for populating a database with a set of images of an anatomical structure. The database is used to perform appearance matching in image pairs of the anatomical structure. A set of image pairs of anatomical structures is received, where each image pair is annotated with a plurality of location-sensitive regions that identify a particular aspect of the anatomical structure. Weak learners are iteratively selected and an image patch is identified. A boosting process is used to identify a strong classifier based on responses to the weak learners applied to the identified image patch for each image pair. The responses comprise a feature response and a location response associated with the image patch. Positive and negative image pairs are generated. The positive and negative image pairs are used to learn a similarity function. The learned similarity function and iteratively selected weak learners are stored in the database.

    摘要翻译: 本发明涉及一种用解剖结构的一组图像填充数据库的方法。 该数据库用于在解剖结构的图像对中执行外观匹配。 接收一组解剖结构的图像对,其中每个图像对用多个识别解剖结构的特定方面的位置敏感区域注释。 迭代选择弱学习者,并识别图像补丁。 基于对应用于每个图像对的所识别的图像补丁的弱学习者的响应,使用增强过程来识别强分类器。 响应包括与图像块相关联的特征响应和位置响应。 产生正负图像对。 正负图像对用于学习相似度函数。 学习的相似度函数和迭代选择的弱学习者存储在数据库中。

    Method and system for up-vector detection for ribs in computed tomography volumes
    10.
    发明授权
    Method and system for up-vector detection for ribs in computed tomography volumes 有权
    计算机断层扫描体积中肋骨向上检测的方法和系统

    公开(公告)号:US09020233B2

    公开(公告)日:2015-04-28

    申请号:US13602660

    申请日:2012-09-04

    IPC分类号: G06K9/00 G06K9/48 G06K9/62

    CPC分类号: G06K9/00 G06K9/48 G06K9/62

    摘要: A method and system for up-vector detection for ribs in a 3D medical image volume, such as a computed tomography (CT) volume is disclosed. A rib centerline of at least one rib is extracted in a 3D medical image volume. An up-vector is automatically detected at each of a plurality of centerline points of the rib centerline of the at least one rib. The up-vector at each centerline point can be detected using a trained regression function. Alternatively, the up-vector at each centerline point can be detected by detecting an ellipse shape in a cross-sectional rib image generated at each centerline point.

    摘要翻译: 公开了一种用于3D医学图像体积中的肋的上矢量检测的方法和系统,例如计算机断层摄影(CT)体积。 在3D医学图像体积中提取至少一个肋的肋中心线。 在至少一个肋的肋中心线的多个中心线点的每一个处自动检测向上矢量。 可以使用经过训练的回归函数检测每个中心线点处的向上矢量。 或者,可以通过在每个中心线点处产生的横截面肋图像中检测椭圆形状来检测每个中心线点处的向上矢量。