A positioning-assisted mobile terminal palmprint collection method and system

Abstract

The invention discloses a mobile terminal palmprint collection method and system for assisting positioning, the method comprising: displaying a first auxiliary line, a second auxiliary line and an auxiliary point on the screen of the mobile terminal; acquiring an image of the user's palm ; determine the boundary position of the palm according to the image; according to the boundary position, determine whether the palm is in the area defined by the first auxiliary line and the second auxiliary line, if not, remind the user to adjust the position of the palm; if , intercepting a partial image within the area defined by the first auxiliary line and the second auxiliary line to obtain a palmprint region of interest; extracting palmprint features according to the palmprint region of interest. The palmprint collection method of the mobile terminal with auxiliary positioning provided by the present invention can limit the posture and position of the palm by only two auxiliary lines and one auxiliary point, and can directly locate the palmprint interest area without additional preprocessing steps , which reduces the complexity of preprocessing and reduces the failure rate of preprocessing in complex scenarios.

Description

technical field [0001] The invention relates to the field of palmprint collection, in particular to a positioning-assisted palmprint collection method and system for a mobile terminal. Background technique [0002] With the continuous and rapid development of communication technology, mobile terminals have become an indispensable part of people's lives. However, there are many security defects and hidden dangers in the existing mobile terminal authentication methods. Traditional password methods such as numbers, patterns, and gestures are easy to be observed and stolen by others; and for the convenience of memory, users tend to use low-entropy easy-to-remember passwords, which are easy to crack and have low security. [0003] Biological characteristics refer to the physiological or behavioral characteristics of human beings, which are more and more widely used in the field of identity authentication due to their characteristics of stability, uniqueness, and not easy to be lo...

AI Technical Summary

Problems solved by technology

However, there are differences in the shooting devices used for various mobile terminals, and the performance of hardware resources (such as processors, memories, etc.) is limited, coupled with factors such as complex backgrounds and differential lighting, all of which pose severe technical challenges for palm area segmentation and ROI positioning. challenge

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