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    • 2. 发明申请
    • Image comparing apparatus using features of partial images
    • 使用部分图像特征的图像比较装置
    • US20060210170A1
    • 2006-09-21
    • US11376268
    • 2006-03-16
    • Manabu YumotoYasufumi ItohManabu OnozakiTakashi HoriyamaTeruaki MoritaMasayuki Ehiro
    • Manabu YumotoYasufumi ItohManabu OnozakiTakashi HoriyamaTeruaki MoritaMasayuki Ehiro
    • G06K9/46G06K9/68G06K9/36G06K9/32
    • G06K9/0008G06K9/00093
    • An image comparing apparatus receives two images to be compared with each other. For each of the two images, respective feature values of partial images in the image are determined. With respect to each partial image in one of the images, the position of a partial image that is in the other image and that has the maximum score of matching with the partial image in that one image is searched for. The search range is limited to partial images selected according to three or five different feature values determined in advance. Then, the similarity score representing the degree of similarity between these two images is calculated, based on information about a movement vector indicating a relation between a reference position for locating the partial image in one image and the maximum matching score position that is searched for with respect to the partial image. Images to be searched belong to the same category as that of the partial image. Here, the images are classified into categories based on the feature values.
    • 图像比较装置接收要彼此比较的两个图像。 对于两个图像中的每一个,确定图像中的部分图像的各自的特征值。 对于其中一个图像中的每个部分图像,搜索位于另一图像中并且具有与该图像中的部分图像匹配的最大分数的部分图像的位置。 搜索范围限于根据预先确定的三个或五个不同特征值选择的部分图像。 然后,基于关于指示用于定位一个图像中的部分图像的参考位置与用于定位一个图像中的部分图像的最大匹配分数位置之间的关系的运动矢量的信息,计算表示这两个图像之间的相似度的相似度分数, 尊重部分图像。 要搜索的图像属于与部分图像相同的类别。 这里,基于特征值将图像分类为类别。
    • 6. 发明授权
    • Image collating apparatus, image collating method, image collating program and computer readable recording medium recording image collating program
    • 图像整理装置,图像对照方法,图像对照程序和计算机可读记录介质记录图像对照程序
    • US07512275B2
    • 2009-03-31
    • US10967145
    • 2004-10-19
    • Manabu YumotoYasufumi ItohTakashi HoriyamaManabu OnozakiToshiya Okamoto
    • Manabu YumotoYasufumi ItohTakashi HoriyamaManabu OnozakiToshiya Okamoto
    • G06K9/62
    • G06K9/6202G06K9/00087
    • When first and second images are input, a partial image feature calculating unit calculates feature values of partial images of the two images. A maximum matching score position searching unit searches for a position of the second image that attains to the highest matching score with each of the partial images of the first image. A movement-vector-based similarity score calculating unit calculates similarity between the first and second images, using information related to that partial image whose movement vector has direction and length within a prescribed range, which movement vector representing positional relation between a reference position for measuring, for each of the partial images, the position of the partial image in the first image and the position of the maximum matching score corresponding to the partial image searched out by the maximum matching score position searching unit. The images as the object of collation may belong to the same category classified based on the feature values.
    • 当输入第一和第二图像时,部分图像特征计算单元计算两个图像的部分图像的特征值。 最大匹配分数位置搜索单元搜索与第一图像的每个部分图像达到最高匹配分数的第二图像的位置。 基于运动矢量的相似性评分计算单元使用与该移动矢量具有规定范围内的方向和长度的部分图像相关的信息来计算第一图像和第二图像之间的相似度,该运动矢量表示用于测量的基准位置之间的位置关系 对于每个部分图像,第一图像中的部分图像的位置和与由最大匹配分数位置搜索单元搜索的部分图像相对应的最大匹配分数的位置。 作为对照对象的图像可以属于基于特征值分类的相同类别。
    • 8. 发明申请
    • Apparatus, method and program performing image collation with similarity score as well as machine readable recording medium recording the program
    • 执行与相似性评分的图像对照以及记录该程序的机器可读记录介质的装置,方法和程序
    • US20060045350A1
    • 2006-03-02
    • US11212710
    • 2005-08-29
    • Yasufumi ItohManabu YumotoManabu Onozaki
    • Yasufumi ItohManabu YumotoManabu Onozaki
    • G06K9/62
    • G06K9/00087
    • Rectangular partial areas “Ri” for use in template matching in a process of determining match/mismatch between fingerprint images are spread adjacently to each other in one of the images. A boundary-including partial area is set in a portion including a crossing point of cross-shaped boundaries defined by the four neighboring partial areas. The plurality of partial areas formed of the neighboring partial areas and the boundary-including partial area are used as a template so that the number of the partial areas can be increased while ensuring a certain size of the partial area. Further, the boundary-including partial area covers the boundary between the neighboring partial areas so that continuity of image data at the boundary between the neighboring partial areas can be reflected in the determination of the match/mismatch between the images.
    • 在确定指纹图像之间的匹配/失配的过程中用于模板匹配的矩形部分区域“Ri”在图像之一中彼此相邻地扩展。 包含边界的部分区域被设置在包括由四个相邻部分区域限定的十字形边界的交叉点的部分中。 使用由相邻部分区域和包含边界的部分区域形成的多个部分区域作为模板,使得可以在确保部分区域的一定大小的同时增加部分区域的数量。 此外,包含边界的部分区域覆盖相邻部分区域之间的边界,使得在相邻部分区域之间的边界处的图像数据的连续性可以反映在图像之间的匹配/不匹配的确定中。