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Palm feature identification method, palm feature identification device and storage medium

A technology of feature recognition and palm, which is applied in the field of storage media, palm feature recognition equipment, and palm feature recognition methods, and can solve problems such as low precision, poor UI interaction ability, and inability to cope with palm tilt.

Inactive Publication Date: 2017-11-10
深圳市中识智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1) The accuracy is not high, and the influence of ambient light is large;
[0007] 2) Insufficient stability and poor system robustness;
[0008] 3) The timing of image acquisition is not clear, and it cannot cope with the situation where the palm is tilted;
[0009] 4) UI interaction ability is poor

Method used

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  • Palm feature identification method, palm feature identification device and storage medium
  • Palm feature identification method, palm feature identification device and storage medium
  • Palm feature identification method, palm feature identification device and storage medium

Examples

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no. 1 example

[0119] Further, refer to Figure 4 , based on the palm feature recognition method of the above-mentioned embodiment, the first embodiment of step S40 specifically includes:

[0120] S41: Perform real-time positioning of the palm according to the first depth image and the first near-infrared image in the first image information, and display the binarized image on a display unit of the palm feature recognition device;

[0121] S42: Calculate the distance between the palm and the palm feature recognition device according to the first depth image, and display the distance between the palm and the palm feature recognition device on the display unit according to the distance;

[0122] S43: Calculate the normal vector of the palm plane according to the first depth image, and calculate the inclination angle of the palm relative to the palm feature recognition device according to the angle between the normal vector and the target direction.

[0123] The palm feature recognition method...

no. 2 example

[0124] Further, refer to Figure 5 , based on the palm feature recognition method of the above-mentioned embodiment, the second embodiment of step S40 specifically includes:

[0125] S45: Obtain the delta difference between the current frame and the previous frame according to the input binarized image sequence with a preset number of frames per second;

[0126] S46: Obtain the area s of the current palm and the distance d between the palm and the palm feature recognition device according to the first image information;

[0127] S47: Calculate the change amount of the current palm image according to the delta, s, d, and obtain the current moving speed v of the palm according to the change amount.

[0128] In this embodiment, when using the binarized image to calculate the moving speed of the palm, first input a binarized image sequence with a preset number of frames per second, such as inputting a sequence of binarized palm images with 24 frames per second, using the frame di...

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Abstract

The invention provides a palm feature identification method, a palm feature identification device and a storage medium. The palm feature identification method comprises the following steps: after an image collection instruction is received, collecting first image information of a palm in real time, obtaining a binary image of the palm according to the first image information, then obtaining a moving speed of the palm and an inclination angle and distance of the palm relative to the palm feature identification device according to the first image information and the binary image, collecting second image information of the palm when an identifiable condition is satisfied, extracting a palm shape feature, a palm print feature and a palm vein feature of the palm after preprocessing the second image information, and finally performing identification and comparison on the palm shape feature, the palm print feature and the palm vein feature with a registration module recorded in a database. The problem that the identification error rate and the refusal error rate are relatively high caused by the movement and inclination of the palm is avoided, and the stability, robustness and accuracy of the identification are improved.

Description

technical field [0001] The invention relates to the technical field of biometric feature recognition, in particular to a palm feature recognition method, a palm feature recognition device, and a storage medium. Background technique [0002] Currently, biometric features are mainly divided into categories such as face, iris, fingerprint, palm print, palm vein, and finger vein. Palm features, which consist of palmprint features and palm vein features, have gained more and more attention based on the characteristics of high precision and low psychological rejection. Existing palm recognition devices are divided into two types: contact type and non-contact type: contact type palm recognition devices are limited by positioning columns and large volume, poor user experience, difficult installation and system integration, and limited application scenarios. Due to the characteristics of simple structure, small size and easy integration and installation, non-contact palm recognition...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/1347G06V40/1318G06V40/1365G06V40/10G06V40/50G06V40/14
Inventor 张大鹏梁旭卢光明骆南刘旸
Owner 深圳市中识智能科技有限公司
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