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Image sensor parameter adjustment method, device, atm and storage medium

An image sensor and parameter adjustment technology, which can be used in coin acceptance devices, instruments, banknote authenticity inspection, etc., can solve problems such as unequal background areas, waste of banknote recognition module resources, and prolong banknote image calculation time

Active Publication Date: 2019-12-06
SHENZHEN YIHUA COMP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, this fixed time period is often set based on experience, which may lead to unreasonable timing for CIS to start scanning, so that in the banknote image collected by CIS, the upper and lower background areas are too wide, or the upper and lower background areas are not equal, such as figure 1 As shown (the black area in the figure is the background area)
Therefore, the existing technical solutions will lead to waste of resources in the banknote identification module, prolonging the calculation time of the banknote image

Method used

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  • Image sensor parameter adjustment method, device, atm and storage medium
  • Image sensor parameter adjustment method, device, atm and storage medium
  • Image sensor parameter adjustment method, device, atm and storage medium

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Embodiment 1

[0027] This embodiment provides a parameter adjustment method of an image sensor, which is applicable to adjusting the parameters of the CIS in the ATM and determining the best time to start capturing images. This method can be adjusted by the parameters of the image sensor provided by the embodiment of the present invention. device, the device can be implemented in software and / or hardware, and generally can be integrated in the ATM. Such as figure 2 As shown, the method of this embodiment specifically includes:

[0028] S210. Collect banknote sample images corresponding to the banknote samples through the CIS to be tested. Wherein, the CIS to be tested has set acquisition parameters.

[0029] The image scanning of a large number of banknotes is performed by using the banknote recognition module in the ATM installed with the CIS to be tested, so as to obtain a large number of sample images of banknotes as the original image data for statistical analysis.

[0030] Wherein,...

Embodiment 2

[0046] On the basis of the above-mentioned embodiments, before the banknote sample image corresponding to the banknote sample is collected by the CIS to be tested, the parameter adjustment method of the image sensor further includes: confirming that the tilt angle of the banknote sample is not greater than that of the CIS to be tested Set the tolerable tilt angle.

[0047] After the banknote sample image corresponding to the banknote sample is collected by the CIS to be tested, the parameter adjustment method of the image sensor further includes: in the banknote sample image, determining that the banknote sample is determined by the first collection point in the banknote sample and the left collection edge of the CIS. and the right background size determined by the second collection point in the banknote sample and the right collection edge of the CIS, wherein the distance between the first collection point and the left collection edge is the shortest , the distance between th...

Embodiment 3

[0067] This embodiment provides a parameter adjustment device for an image sensor, which can be adapted to adjust the parameters of the CIS in the ATM and determine the best time to start collecting images. The device can be implemented in software and / or hardware, and Generally can be integrated in ATM. Such as Figure 4 As shown, the device includes: banknote sample image acquisition module 410, upper and lower background size determination module 420, individual difference calculation module 430 and target parameter adjustment module 440 of the CIS to be tested, wherein:

[0068] A banknote sample image acquisition module 410, configured to collect a banknote sample image corresponding to the banknote sample through the CIS to be tested, wherein the CIS to be tested has set acquisition parameters;

[0069] The upper and lower background size determining module 420 is used to determine, in the banknote sample image, the upper background size determined by the initial acquis...

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Abstract

The embodiment of the present invention discloses a parameter adjusting method and device of an image sensor, an ATM and a storage medium. The method comprises the steps of acquiring the paper currency sample images corresponding to the paper currency samples via a to-be-tested contact image sensor (CIS); in the paper currency sample images, determining the upper background sizes determined by theinitial acquisition points of the paper currency samples and the initial acquisition edge of the CIS, and the lower background sizes determined by the ending acquisition points of the paper currencysamples and the ending acquisition edge of the CIS; calculating the differences of the upper background sizes and the lower background sizes as the individual differences; calculating the statisticalaverage of the individual differences respectively corresponding to the at least two paper currency sample images acquired by the to-be-tested CIS, and adjusting a target parameter of the to-be-testedCIS according to the statistical average. By the above method, the optimal opportunity that the to-be-tested CIS starts to acquire the images can be determined, the upper and lower background areas in the paper currency images are balanced, and the resource waste in an image identification module and the calculation time of the paper currency images are reduced.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of image sensor control, and in particular, to a parameter adjustment method, device, ATM and storage medium of an image sensor. Background technique [0002] CIS (Contact Image Sensor, contact image sensor), used in the banknote identification module of ATM (Automatic Teller Machine, automatic teller machine), can obtain the analog image signal of banknotes. [0003] Usually, in the ATM, detection sensors (usually a pair of infrared radiation sensors) are provided on both sides of the banknote identification module to detect whether banknotes enter the banknote identification module via the banknote dispensing system. Under normal circumstances, due to the air resistance and the floating of banknotes in the banknote passing system, banknotes will often enter the banknote identification module with a certain inclination angle, and the infrared sensors on both sides will detect that the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G07D11/22G07D7/20
CPCG07D7/2075G07D11/22
Inventor 黄勃
Owner SHENZHEN YIHUA COMP