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Method and a system for identifying the same person based on barefoot footprints

A footprint and barefoot technology, applied in neural learning methods, character and pattern recognition, image data processing, etc., can solve the problems of easy destruction of physical evidence, difficult to extract, and inability to achieve the same personal authentication, to achieve the effect of improving efficiency

Active Publication Date: 2019-04-05
DALIAN EVERSPRY SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although DNA, fingerprints, and faces can achieve the purpose of personal identity identification, these physical evidences are easily destroyed and difficult to extract at the scene of the case, while footprints are very easy to leave biological evidence, and shoe footprints can only be obtained by suspects. The type and size of the shoes worn during the crime can infer some characteristics of the suspect, and identity identification cannot be achieved, but identity identification can be carried out by identifying the features extracted from barefoot footprints

Method used

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  • Method and a system for identifying the same person based on barefoot footprints
  • Method and a system for identifying the same person based on barefoot footprints
  • Method and a system for identifying the same person based on barefoot footprints

Examples

Experimental program
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Effect test

Embodiment 1

[0070] A method for identification of personal identity based on barefoot footprints, the steps are as follows:

[0071] A1. Enter barefoot or socks footprint data;

[0072] A2. Unify footprint data attributes;

[0073] A3. Data preprocessing;

[0074] A4. Make a barefoot image dataset;

[0075] A5. Data training, verification and training model adjustment;

[0076] A6. If the closed-set condition is satisfied, then do closed-set identification, otherwise, do open-set search.

[0077] Further, the data preprocessing includes processing images containing impurity information and adjusting pre-training data;

[0078] The steps to process images containing impurity information are as follows:

[0079] B1. Manual cutting: It is necessary to mark the positions of 4 points on the inner edge of the toe, the outer edge of the toe, the rear edge of the heel, and the front edge of the longest toe of the barefoot or wearing socks. Each picture According to these four key points, ma...

Embodiment 2

[0118] A system of personal identification based on barefoot footprints, including:

[0119] Footprint input module: input barefoot or socks footprint data;

[0120] Footprint data unification module: unify footprint data attributes;

[0121] Data preprocessing module: data preprocessing;

[0122] Barefoot image dataset module: make a barefoot image dataset;

[0123] Data training, verification and training model adjustment: training and feature extraction of data, verification, training model adjustment and identification.

[0124] Closed set identification module: identify the person who belongs to the sample, there is a corresponding training sample in the training database, and the result is the identified person;

[0125] Open-set retrieval module: It is uncertain whether there is a corresponding training sample in the training database to identify the owner of the sample. The result is sorted according to the similarity of the features, and the quantified similarity is ...

Embodiment 3

[0133] As a new embodiment or a supplement to Embodiment 1.

[0134] A method for identification of personal identity based on barefoot footprints, the scheme is as follows:

[0135] 1. Data requirements:

[0136] 1) Acquisition of barefoot or socks footprint data:

[0137] (1) Dynamic barefoot or socks footprint data: This type of data is real-time barefoot or socks footprint data collected by the collection equipment, which reflects the status of barefoot or socks footprints at a certain moment, and can better reflect the real-time engraving changes in barefoot or socked footprints;

[0138] (2) Static barefoot or sock-wearing footprint data: The data is the average state of barefoot or sock-wearing footprints collected by the collection equipment within a certain period of time, reflecting the overall balance of the soles of the feet, and can better reflect the objective barefoot or sock-wearing footprints stable features.

[0139] Among them, the barefoot or sock footp...

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Abstract

The invention relates to a method and a system for identifying the same person based on barefoot footprints, and belongs to the field of footprint processing. According to the technical scheme, the method comprises the following steps that A1, inputting barefoot or sock wearing footprint data; A2, unifying footprint data attributes; A3, performing data preprocessing; A4, making a barefoot image data set; A5, carrying out data training and feature extraction; And A6, verifying, and adjusting and identifying a training model. Beneficial effects are as follows: the device is convenient to use; According to the method and the system for identifying the same person based on the barefoot footprint, the problem that a biological material evidence for identifying the same person is commonly used in a crime scene can be solved; A model of the same personal identification algorithm is obtained by training through a machine learning CNN network, and the barefoot footprint obtained from a crime scene is used as a test image to be input into the model, so that the same personal identification can be carried out. The scheme of the invention has the beneficial effects of assisting the public security department in case analysis and promotion and improving the case solving efficiency of the public security department.

Description

technical field [0001] The invention relates to the field of footprint processing, in particular to a method and system for identifying a person based on barefoot footprints. Background technique [0002] With footprint data, as one of the four major biological evidences of the Ministry of Public Security (the other three, DNA, fingerprints, and human faces), it plays a key role in the process of case detection and criminal arrest. The footprint data also includes shoe footprints, barefoot footprints, and sock footprints. Experts in many fields have been exploring and researching these four biological evidences, such as the extraction and comparison of fingerprints in the document "Asurveyoffingerprint classification Part II.Knowledge-Based Systems", and the face recognition in the document "Asurvey of 2D face recognition techniques". The exploration of DNA extraction in the literature "A comparison of DNA extraction methods for high-throughput DNA analyses", etc. Although...

Claims

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Application Information

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IPC IPC(8): G06K9/46G06N3/08
CPCG06N3/08G06T7/11G06T7/30G06T2207/20132G06T2207/20081G06V10/40
Inventor 董波于昕晔陈伟卿
Owner DALIAN EVERSPRY SCI & TECH
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