Invention Application
- Patent Title: ANNOTATION FREE LICENSE PLATE RECOGNITION METHOD AND SYSTEM
- Patent Title (中): 免提许可证认证方法和系统
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Application No.: US14658713Application Date: 2015-03-16
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Publication No.: US20160203380A1Publication Date: 2016-07-14
- Inventor: Orhan Bulan , Vladimir Kozitsky , Aaron M. Burry
- Applicant: Xerox Corporation
- Main IPC: G06K9/32
- IPC: G06K9/32 ; G06K9/62 ; G06T7/00 ; G06K9/18

Abstract:
Methods and systems for recognizing a license plate character. Synthetic license plate character images are generated for a target jurisdiction. A limited set of license plate images can be captured for a target jurisdiction utilizing an image-capturing unit. The license plate images are then segmented into license plate character images for the target jurisdiction. The license plate character images collected for the target jurisdiction can be manually labeled. A domain adaptation technique can be utilized to reduce the divergence between synthetically generated and manually labeled target jurisdiction image sets. Additionally, OCR classifiers are trained utilizing the images after the domain adaptation method has been applied. One or more input license plate character images can then be received from the target jurisdiction. Finally, the trained OCR classifier can be employed to determine the most likely labeling for the character image and a confidence associated with the label.
Public/Granted literature
- US09536315B2 Annotation free license plate recognition method and system Public/Granted day:2017-01-03
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