Generating Optimal Face Image in Face Recognition System

In the recent time bioinformatics take wide field in image processing. Face recognition which is basically the task of recognizing a person based on its facial image. It has become very popular in the last two decades, mainly because of the new methods developed and the high quality of the current visual instruments. There are different types of face recognition algorithms, and each method has a different approach to extract the image features and perform the matching with the input image. In this paper the Local Binary Patterns (LBP) was used, which is a particular case of the Texture Spectrum model, and powerful feature for texture classification. The face recognition system consists of recognizing the faces acquisition from a given data base via two phases. The most useful and unique features of the face image are extracted in the feature extraction phase. In the classification the face image is compared with the images from the database. The proposed algorithm for face recognition in this paper adopt the LBP features encode local texture information with default values. Apply histogram equalization and Resize the image into 80x60, divide it to five blocks, then Save every LBP feature as a vector table. Matlab R2019a was used to build the face recognition system. The Results which obtained are accurate and they are 98.8% overall (500 face image).

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Forensic face recognition based on KDE and evidence theory

MATEC Web of Conferences ◽

10.1051/matecconf/202133606008 ◽

2021 ◽

Vol 336 ◽

pp. 06008

Author(s):

Wen Xiao

Keyword(s):

Face Recognition ◽

Evidence Theory ◽

Recognition System ◽

Face Image ◽

Ratio Method ◽

Face Recognition System ◽

Basic Probability ◽

System Output ◽

Image Pairs ◽

Probability Density Function Pdf

Forensic face recognition (FFR) has been studied in recent years in forensic science. Given an automatic face recognition system, output scores of the system are used to describe the similarity of face image pairs, but not suitable for forensics. In this study, a score-mapping model based on kernel density estimation (KDE) and evidence theory is proposed. First, KDE was used to generate probability density function (PDF) for each dimensional feature vector of face image pairs. Then, the PDFs could be utilized to determine separately the basic probability assignment (BPA) of supporting the prosecution hypothesis and the defence hypothesis. Finally, the BPAs of each feature were combined by Dempster’s rule to get the final BPA, which reflects the strength of evidence support. The experimental results demonstrate that compared with the classic KDE-based likelihood ratio method, the proposed method has a better performance in terms of accuracy, sensitivity and specificity.

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A Face Recognition System Based on Principal Component Analysis-Wavelet and Support Vector Machines

Cihan University-Erbil Scientific Journal ◽

10.24086/cuesj.v3n2y2019.pp14-20 ◽

2019 ◽

Vol 3 (2) ◽

pp. 14-20

Author(s):

Laith R. Fleah ◽

Shaimaa A. Al-Aubi

Keyword(s):

Neural Network ◽

Principal Component Analysis ◽

Face Recognition ◽

Principal Component ◽

Component Analysis ◽

Recognition System ◽

Face Image ◽

Polynomial Kernel ◽

Support Vector ◽

Face Recognition System

Face recognition can represent a key requirement in various types of applications such as human-computer interface, monitoring systems, as well as personal identification. In this paper, design and implement of face recognition system are introduced. In this system, a combination of principal component analysis (PCA) and wavelet feature extraction algorithms with support vector machine (SVM) and K-nearest neighborhood classifier is used. PCA and wavelet transform methods are used to extract features from face image using and identify the image of the face using SVMs classifier as well as the neural network are used as a classifier to compare its results with the proposed system. For a more comprehensive comparison, two face image databases (Yale and ORL) are used to test the performance of the system. Finally, the experimental results show the efficiency and reliability of face recognition system, and the results demonstrate accuracy on two databases indicated that the results enhancement 5% using the SVM classifier with polynomial Kernel function compared to use feedforward neural network classifier.

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