Unrestraint palm image acquisition device

Abstract

The invention discloses an unrestraint palm image acquisition device, which comprises a shell, a lighting source, a camera for acquisition, a PC for control and storage and a monochrome backdrop, wherein the shell is divided into an upper acquisition area, a lower non-transparent area and a base. When acquiring, a hardware system does not limit the category of the left and the right hands of users, the placing position and angle of the palm as well as the shape size of the palm, an arc acquisition area is applicable to the natural gesture of the palm, the lighting source is controllable, theacquired palm image is clear and integral, and the invention can be used as the palm image acquisition device of various biometrics identification systems based on two-dimensional palm shapes and palm prints as well as fingerprints. The device has the advantages of simple construction, strong applicability and low cost. A palm database with high degree of freedom is built by utilizing the device,the obtained palm images are applied on palm print and palm shape feature recognition system, and very good effect is obtained.

Description

technical field [0001] The invention belongs to the technical field of computer image acquisition, and in particular relates to an unconstrained palm image acquisition device dedicated to a biological feature identification system. Background technique [0002] Palm features, including fingerprints, palm prints, palm shapes, etc., are an important research branch of biometric identification technology (Biometric Identification Technology). The characteristics of the palm part have the characteristics of high ease of use, few influencing factors of misidentification, high accuracy, high security level, and long-term stability. Therefore, the development of fingerprint recognition technology has always attracted much attention, and the recognition of palmprint and palm shape features has gradually received attention in recent years. [0003] Palm image acquisition is an indispensable prerequisite for palm feature recognition. Research in this field has made some progress in r...

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Problems solved by technology

[0006] Aiming at the disadvantages and deficiencies of the existing acquisition methods, such as many restrictions on users, poor adaptability and versatility, simple palm extraction and positioning algorithm, and poor applicability, the present invention proposes an unconstrained palm image acquisition device, which has a large degree of freedom in the position of the user's palm , the collection process is fast and convenient, with high comfort, no stains and palmprint deformation caused by stretching of the palm, etc., conforming to the development trend of easy-to-use palm collection system

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