Camera model identification based on DCT coefficient statistics
نویسندگان
چکیده
منابع مشابه
mortality forecasting based on lee-carter model
over the past decades a number of approaches have been applied for forecasting mortality. in 1992, a new method for long-run forecast of the level and age pattern of mortality was published by lee and carter. this method was welcomed by many authors so it was extended through a wider class of generalized, parametric and nonlinear model. this model represents one of the most influential recent d...
15 صفحه اولImprovements on Source Camera-model Identification Based on Cfa Interpolation
The idea of using traces of interpolation algorithms, deployed by a digital camera, as an identifier in the source camera-model identification problem has been initially studied in [2]. In this work, we improve our previous approach by incorporating methods to better detect the interpolation artifacts in smooth image parts. To identify the source cameramodel of a digital image, new features tha...
متن کاملBlind Image / Video Quality Assessment Based on DCT-Domain Statistics
As the need of quality assessment increases day by day. Here develops an efficient general-purpose blind image/video quality assessment (I/VQA) algorithm using a natural scene statistics (NSS) model of discrete cosine transform (DCT) coefficients. The image/video quality assessment approach relies on a simple Bayesian inference model to predict image/video quality scores from certain extracted ...
متن کاملDCT Coefficient-Based Error Detection Technique for Compressed Video Stream
In the process of transmission of digital encoded video bit streams over physical network, the data is corrupted by random bit errors, which has a several effect on the decoded video quality. The success of an error concealment algorithm depends heavily on the detection of the corrupted regions. In this paper we proposes a new error detection algorithm for discrete cosine transfom based video c...
متن کاملDigital Camera Identification Based on Original Images
1.1 Identification task To analyse the capability of identification due to direct dependence of ID-procedure on media nature it is feasible to select two groups of media: material (physical bodies) and energetical (physical fields: electric currents, sound fields, etc). The common property of any field is wavelike pattern so it can be named wave media type. Electric current both the power carri...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Digital Signal Processing
سال: 2015
ISSN: 1051-2004
DOI: 10.1016/j.dsp.2015.01.002