Article


Article Code : 139307301021542784(DOI : 10.7508/jist.2013.04.004)

Article Title : Camera Identification Algorithm Based on Sensor Pattern Noise Using Wavelet Transform, SVD / PCA and SVM Classifier

Journal Number : 4 Autumn 2013

Visited : 1334

Files : 303 KB


List of Authors

  Full Name Email Grade Degree Corresponding Author
1 Kimia Bolouri bolouri_kimia@yahoo.com - B.S
2 Mehdi Javanmard javanmard@pnu.ac.ir Assistant Professor PhD
3 Mohammad Firouzmand firouzmand@irost.org Associate Professor PhD

Abstract

Identifying the source camera of an image is one of the most important issues of digital court and is useful in many applications, such as images that are presented in court as evidence. In many methods, the image noise characteristics, extraction of Sensor Pattern Noise and its correlation with non-uniformity of the light response (PNU) are used. In this paper we have presented a method based on photo response non uniformity (PRNU) that provides some features for classification by support vector machine (SVM). Because the noise model is affected by the complexity of the image, we used the wavelet transform to de-noise and reduce edge effects in PRNU noise pattern and also raise the detection accuracy. We also used the Precision processing theory to reduce the image size, then we simplified and summarized the data using the Single Value Decomposition (SVD) Or principal component analysis (PCA). The results show that using two-level wavelet transform and summarized data is more suitable using PCA.