Subway on-site payment system

Abstract

The invention relates to a subway on-site payment system. The system comprises a fingerprint extraction device which is arranged on a subway payment control device and is used for collecting a fingerprint image of a checkout requester so as to output a corresponding payment fingerprint image, a liquid crystal display screen which is arranged on the subway payment control device and is used for displaying a deviation angle on site when the deviation angle is received, and a gray scale analysis device which is connected with the fingerprint extraction device and is used for receiving the paymentfingerprint image, detecting a gray scale balance degree of the payment fingerprint image to obtain the current balance degree corresponding to the payment fingerprint image and outputting the current balance degree corresponding to the payment fingerprint image. The system is advantaged in that the application scene of fingerprint payment is effectively expanded.

Description

technical field

[0001] The invention relates to the field of fingerprint fee deduction, in particular to an on-site subway fee payment system. Background technique

[0002] Fingerprint extraction includes the center (upper, lower) and triangular points (left, right), etc. The detailed feature points of the fingerprint mainly include the starting point, ending point, joint point and bifurcation point of the ridge line. Extract the feature point information (terminal point, bifurcation point...) of the fingerprint from the preprocessed image, and the information mainly includes parameters such as type, coordinates, and direction. The detailed features in the fingerprint usually include endpoints, bifurcation points, isolated points, short forks, rings, etc. The ridge line endpoints and bifurcation points have the most opportunities to appear in fingerprints, are the most stable, and are easy to obtain. These two types of extraction points can match the fingerprint features, ...

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