Multi-spectrum bill image collecting device based on CIS and processing method

An image acquisition device and image acquisition technology, applied in the fields of electronic circuits, bill feature recognition, and machine vision, can solve problems such as instability and image redundancy, and achieve the effect of improving accuracy

Active Publication Date: 2013-12-11
SOUTH CHINA UNIV OF TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0008] In the first case, the edge signal of the infrared sensor is directly used as the field synchronization trigger signal of the image. Due to the distance requirement between the infrared sensor and the CIS, the collected

Method used

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  • Multi-spectrum bill image collecting device based on CIS and processing method
  • Multi-spectrum bill image collecting device based on CIS and processing method
  • Multi-spectrum bill image collecting device based on CIS and processing method

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Embodiment

[0044] The present invention selects a three-channel CIS with multiple light sources, including visible light, ultraviolet light and infrared light, and each light source can be individually controlled to facilitate the combination of different spectra. The purpose of choosing a three-channel CIS is to reduce the time for each frame or line image acquisition of the CIS and improve the real-time performance of the equipment.

[0045] figure 1 It is a schematic structural diagram of the device, which at least includes an infrared sensor 1, a photoelectric switch sensor 2, a grating disc 3), a transmission mechanism 4, a multi-light source contact image sensor CIS5, an FPGA control circuit 6, a light source control circuit 7, a sensor circuit 8, A / D conversion circuit 9 and DC motor 10 .

[0046]The infrared sensor 1 and the photoelectric switch sensor 2 transmit the signal to the FPGA through the filter, amplification and level conversion of the sensor circuit 8, as the field s...

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Abstract

The invention provides a multi-spectrum bill image collecting device based on a CIS and a processing method. The multi-spectrum bill image collecting device at least comprises an infrared sensor, an optoelectronic switch sensor, an optical grating disc, a delivery mechanism, the multi-light-source CIS, an FPGA control circuit, a light source control circuit, a sensor circuit, an A/D converting circuit and a direct current motor. According to the device and the method, under the multi-spectrum condition, the visible light, ultraviolet light, infrared light or combined light initiative light sources are used for illuminating bills to complete image shooting, a computer series port is adopted to select light source schemes, and high-speed, real-time and high-quality image collection, display and storage are achieved. When the multi-spectrum bill image collecting device based on the CIS and the processing method are used, high-quality bill image data under the multi-spectrum condition can be rapidly obtained. The multi-spectrum bill image collecting device based on the CIS and the processing method can be used for true-or-false analysis of the bills, therefore, the high-speed and accurate recognition on the true and false bills can be achieved, and the accuracy, the stability and the real-time performance of a bill recognition system are improved.

Description

[0001] technical field [0002] The invention relates to the technical field of electronic circuits, in particular to the image acquisition technology of bills with anti-counterfeiting features, and provides a new image acquisition device and method for bill feature recognition, machine vision and other fields. Background technique [0003] With the development of related technologies, the production level of counterfeit bills is getting higher and higher, and the phenomenon of confusing real ones is becoming more and more rampant, affecting people's daily life and social stability. Therefore, it is imperative to improve the recognition ability of existing identification equipment. [0004] Important bills basically have anti-counterfeiting features, and most of them can be reflected in multispectral images. The real and fake bills show different features in the multispectral image, which is convenient for equipment to distinguish and identify. Therefore, multispectral imag...

Claims

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Application Information

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IPC IPC(8): G07D7/20G07D7/121G07D7/128
Inventor 陈安段俊欢胡跃明吴忻生
Owner SOUTH CHINA UNIV OF TECH
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