Criminal investigation simulation portrait model generation method, criminal investigation simulation portrait method and device

Abstract

The invention discloses a criminal investigation simulation portrait model generation method, a criminal investigation simulation portrait method and a criminal investigation simulated portrait device. The method comprises the following steps: acquiring a facial portrait of a criminal; Acquiring all sample facial features of the facial portrait; taking Vectorization sample face features as samplefeature vectors through a preset face feature vector model; Combining all the sample feature vectors into a sample vector matrix according to preset facial feature arrangement positions; Selecting a sample vector matrix as an input sample, and selecting a criminal tag of a criminal corresponding to the sample vector matrix as an output sample; And training an initial artificial neural network model as a criminal investigation simulation portrait model according to the combination of the plurality of input samples and the plurality of output samples. According to the method, a criminal investigation simulation portrait model can be established through a large number of criminal personnel portraits, and the criminal investigation simulation portrait model is used for automatically perfectingsuspect portraits close to criminals when viewers forget part of suspects' facial features.

Description

technical field [0001] The invention relates to the technical field of criminal investigation, in particular to a method for generating a criminal investigation simulation portrait model, a criminal investigation simulation portrait method and a device. Background technique [0002] Simulated portrait is a method of criminal investigation; it generally refers to the facial portrait of a suspect drawn by professionals through dictation of eyewitnesses in cases where eyewitnesses participate in assisting investigations. If the portrait reaches a certain degree of similarity with the suspect, it can be used as a criminal investigation clue. [0003] The specific means of simulating portraits have evolved to include hand-painting, combination of portraits, and computer simulation. Among them, computer simulation is to simulate portraits through special image processing software, generally by selecting facial features in the portrait parts library for group portraits; specifical...

AI Technical Summary

Problems solved by technology

[0004] Generally speaking, the realization of simulated portraits is very dependent on witnesses' memory of the suspect's facial features; this makes it difficult to effectively realize simulated portraits when witnesses partially forget the suspect's facial features

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