Image analysis – Pattern recognition – Feature extraction
Reexamination Certificate
2007-06-05
2007-06-05
Mehta, Bhavesh M (Department: 2624)
Image analysis
Pattern recognition
Feature extraction
C382S181000, C382S190000, C382S191000, C382S209000, C382S280000, C382S232000, C382S218000
Reexamination Certificate
active
10057756
ABSTRACT:
An image processing method for detecting an object from an input image using a template image, including inputting a specified image with respect to both a template image and an input image, calculating an edge normal direction vector of said specified image, generating an evaluation vector from said edge normal direction vector, subjecting the evaluation vector to orthogonal transformation, a step of performing a product sum calculation of corresponding spectral data with respect to each evaluation vector that has been subjected to orthogonal transformation and has been obtained for each of said template image and said input image, and a step of subjecting it to inverse orthogonal transformation and generating a similarity value map. The formula of the similarity value, the orthogonal transformation, and the inverse orthogonal transformation each have linearity. The pattern recognition is one in which the component of the similarity value is not subjected to positive
egative reversal through variations in brightness of the background.
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English Language Abstract of JP 05-028273.
Imagawa Kazuyuki
Iwasa Katsuhiro
Matsuo Hideaki
Takata Yuji
Yoshimura Tetsuya
Darby & Darby
Matsushita Electric - Industrial Co., Ltd.
Mehta Bhavesh M
Strege John
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