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    • 4. 发明申请
    • Methods for finding and characterizing a deformed pattern in an image
    • 用于查找和表征图像中的变形图案的方法
    • US20070183668A1
    • 2007-08-09
    • US11670199
    • 2007-02-01
    • Jason Davis
    • Jason Davis
    • G06K9/68G06K9/46
    • G06T7/0079G06K9/6206
    • A method is disclosed for finding a deformed pattern in an image using a plurality of sub-patterns. By advantageously restricting sub-pattern search ranges, search speed is improved, and the incidence of spurious matches is reduced. The method also quickly decides which sub-pattern result, of several potential candidates, is most likely to be the correct match for a deformed sub-pattern. Also, a method is provided for characterizing a deformed pattern in an image by using results from feature-based search tools to create a mapping that models the deformation of the pattern. A transform, selectable by a user, is fit to the results from the search tools to create a global deformation mapping. This transformation is fit only to feature points derived from matches resulting from successful sub-pattern search, without including data from areas of the pattern that were blank, not matched, or otherwise didn't contain information about the pattern's distorted location.
    • 公开了一种使用多个子图案在图像中发现变形图案的方法。 通过有利地限制子图案搜索范围,提高了搜索速度,并且减少了错配匹配的发生。 该方法还快速地确定几个潜在候选者的哪个子模式结果最有可能是变形子模式的正确匹配。 此外,提供了一种通过使用基于特征的搜索工具的结果来表征图像中的变形图案以创建对图案的变形进行建模的映射的方法。 由用户选择的变换适用于搜索工具的结果,以创建全局变形映射。 该变换仅适合于从成功的子模式搜索产生的匹配导出的特征点,而不包括来自空白,不匹配的模式的区域的数据,或者否则不包含关于模式的失真位置的信息。