Banknote identification instrument image acquisition and data processing method and circuit
A data processing and image acquisition technology, applied in the field of image processing, can solve the problems of reducing counterfeit identification performance, achieve the effect of speeding up processing, improving banknote recognition speed, and reducing requirements
Inactive Publication Date: 2015-11-25
ZHEJIANG UNIV
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The problem with this type of technical solution is that each banknote image has more effective pixels and a larger amount of data, but the system needs to recognize the image in a short period of time, and the image processing algorithm is more complicated, which has a great impact on the digital signal processor. High requirements, however, if the complexity of the algorithm is reduced, the performance of authentication will be reduced
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[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0033] figure 1 It is a method flowchart of an embodiment of the image acquisition and data processing method in the present invention, comprising the following steps:
[0034] Step S10: Acquiring banknote image analog signals line by line by using a line array image sensor.
[0035] Programmable logic devices or application-specific integrated ...
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The invention relates to the technical field of image processing, and discloses a banknote identification instrument image acquisition and data processing method. The method of the invention comprises the following process: obtaining a banknote image simulation signal line by line, obtaining a digital image signal through analog-to-digital conversion, performing signal correction, processing the digital image signal before and after correction processing, and outputting the processed digital image signal to a digital signal processor so as to perform banknote image detection and identification. The banknote identification instrument image acquisition and data processing method can effectively improve detection precision, accelerate the processing speed, and reduce a requirement for the digital signal processor; after processing is performed on a banknote image in a co-processing circuit, and additional data is inserted, the banknote image signal is transmitted to the digital signal processor, the method is in favor of rapidly obtaining image parameter information of boundary information, a banknote damaged condition, an exposure mode and the like, the workload of the digital signal processor is reduced, and the banknote identification speed is greatly improved.
Description
technical field [0001] The invention relates to the technical field of image processing, in particular to an image collection and data processing method and circuit of a banknote authenticator. Background technique [0002] All kinds of counterfeit money emerge in an endless stream in the society. With the improvement of criminals' counterfeiting technology, the degree of imitation of counterfeit money is getting higher and higher, which poses a threat to financial security and affects social stability. How to prevent counterfeit money from flowing into the market has become the focus of attention of major financial institutions and the general public. [0003] Banknotes from various countries have anti-counterfeiting designs, which have different anti-counterfeiting features under different lighting conditions. Therefore, people can make use of these features to observe with human eyes, or perform artificial authentication by observing with special imaging equipment. Howe...
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IPC IPC(8): G07D7/20
Inventor 唐慧明范飞军黄河郑克群江一帆
Owner ZHEJIANG UNIV