The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 15, 2014
Filed:
Jul. 08, 2011
Ching-tai Chiang, Kaohsiung, TW;
Rong-ching Wu, Kaohsiung, TW;
Chen-sen Ouyang, Kaohsiung, TW;
Jong-ian Tsai, Kaohsiung, TW;
Ching-Tai Chiang, Kaohsiung, TW;
Rong-Ching Wu, Kaohsiung, TW;
Chen-Sen Ouyang, Kaohsiung, TW;
Jong-Ian Tsai, Kaohsiung, TW;
I Shou University, Kaohsiung, TW;
Abstract
A method for extracting feature vectors from a palm image includes the steps of: determining a palm contour in the palm image, and labeling pixels on the palm contour as contour pixels in order along the palm contour; determining a rotation angle of the palm contour relative to a coordinate system; obtaining corrected contour pixels to offset the rotation angle; determining a plurality of feature points from the corrected contour pixels; obtaining a plurality of sub-images from the palm image with reference to the feature points, one of the sub-images corresponding to a palm center and another one of the sub-images corresponding to a corresponding palm finger; and determining the feature vectors with reference to the sub-images, each of the feature vectors corresponding to a corresponding one of the sub-images.