Acquisition device and processing method of palm print image

Abstract

The invention relates to an acquisition device and a processing method of a palm print image. An image sensor and spotted light sources are encapsulated in a small box, wherein the spotted light sources are evenly distributed at the periphery of the image sensor; a receiving end of the image sensor is arranged opposite to a hand-shaped depression positioned on a hand placement table in ambient light and used for acquiring a hand image containing shape information of the user hand positioned on the hand placement table from the ambient light; a personal computer extracts a palm print image from the hand image acquired by the image sensor by using the palm print image processing method, also extracts palm print image features from the palm print image, then carries out palm print feature comparison with a palm print image feature module registered by a storage user of a storage device, identifies the acquired palm print image of the user hand image and realizes the identification of user identity. The processing method of the palm print image can be used for correcting the offset and the deflection caused by unfixed hand position to obtain the palm print image, eliminating the influence caused by monotonic change of the ambient light and extracting stable palm print image features.

Description

technical field [0001] The invention belongs to the technical field of digital image processing, pattern recognition and database management, in particular to an identity authentication system and an authentication method for collecting hand images in ambient light and performing identity authentication based on palmprint image recognition on a personal computer terminal . Background technique [0002] With the vigorous development of information technology, computers are making people's daily life informational and networked. People have already been able to conduct online bank account processing, online document retrieval and downloading, and government affairs disclosure processing by government management agencies anytime and anywhere through the Internet. The enhancement of the processing capability of the personal computer terminal further broadens the scope of the computer in people's daily use. There are already technologies using the personal computer terminal to r...

AI Technical Summary

Problems solved by technology

[0012] In order to solve the problem in the prior art that the position, angle, and posture of the hand need to be fixed only by means of columns, the purpose of the present invention is to acquire hand images in ambient light without requiring a special housing for external light. For shielding, in the process of image acquisition, the user only needs to put his hand on the hand resting table. In particular, there is a hand model with a hand-shaped depression on the hand resting table, so as to prompt the user to place the hand. The placement position, angle and posture in the range of depression are not limited, so as to realize utilizing palmprint image recognition on personal computer, for this reason, the object of the present invention is to provide a kind of acquisition equipment of palmprint image and palmprint image processing method

Images