Invention Grant
- Patent Title: Image search with feature point transformation
- Patent Title (中): 图像搜索与特征点转换
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Application No.: US12768559Application Date: 2010-04-27
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Publication No.: US08472757B2Publication Date: 2013-06-25
- Inventor: Hirotaka Shiiyama , Hidetomo Sohma , Koichi Magai , Masahiro Matsushita
- Applicant: Hirotaka Shiiyama , Hidetomo Sohma , Koichi Magai , Masahiro Matsushita
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2009-125844 20090525
- Main IPC: G06K9/54
- IPC: G06K9/54

Abstract:
An image search apparatus, which determines a similarity between an input query image and a registered comparison destination image and searches an image similar to the query image, extracts a plurality of corresponding pairs of feature points in two images based on feature points selected from the both images. A coordinate transformation coefficient to execute a coordinate transformation process is decided so that coordinates of the feature point of one of the two images match coordinates of the feature point of the other image, in relation to each pair. Only if an amount of transformation of coordinates satisfies the constraint conditions designated in advance, the coordinate transformation process using the coordinate transformation coefficient is executed in relation to the plurality of pairs of feature points, and coordinates of the feature points after the transformation of one image are compared with coordinates of the corresponding feature points of the other image.
Public/Granted literature
- US20100296736A1 IMAGE SEARCH APPARATUS AND METHOD THEREOF Public/Granted day:2010-11-25
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