scholarly journals An Image Tampering Detection Algorithm Based on the Posterior Probability and Color Filter Array Artifacts

2017 ◽  
Vol 07 (09) ◽  
pp. 850-857
Author(s):  
金巧 魏
Keyword(s):  
Posterior Probability ◽  
Detection Algorithm ◽  
Color Filter ◽  
Color Filter Array ◽  
Tampering Detection ◽  
Image Tampering ◽  
Filter Array ◽  
Image Tampering Detection

Digital Image Forensics Based on CFA Interpolation Feature and Gaussian Mixture Model

2020 ◽  
pp. 80-91
Author(s):  
Xinyi Wang ◽  
Shaozhang Niu ◽  
Jiwei Zhang
Keyword(s):  
Gaussian Mixture Model ◽  
Mixture Model ◽  
Prediction Error ◽  
Gaussian Mixture ◽  
Detection Algorithm ◽  
Digital Image Forensics ◽  
Color Filter ◽  
Detection Accuracy ◽  
Color Filter Array ◽  
Filter Array

According to the characteristics of the color filter array interpolation in a camera, an image splicing forgery detection algorithm based on bi-cubic interpolation and Gaussian mixture model is proposed. The authors make the assumption that the image is acquired using a color filter array, and that tampering removes the artifacts due to a demosaicing algorithm. This article extracts the image features based on the variance of the prediction error and create image feature likelihood map to detect and locate the image tampered areas. The experimental results show that the proposed method can detect and locate the splicing tampering areas precisely. Compared with bi-linear interpolation, this method can reduce the prediction error and improve the detection accuracy.

Toward blind joint demosaicing and denoising of raw color filter array data

2021 ◽  
Author(s):  
Fangfang Wu ◽  
Tao Huang ◽  
Weisheng Dong ◽  
Guangming Shi ◽  
Zhonglong Zheng ◽  
...  
Keyword(s):  
Color Filter ◽  
Color Filter Array ◽  
Array Data ◽  
Filter Array

scholarly journals Adaptive Wiener filter super-resolution of color filter array images

2013 ◽  
Vol 21 (16) ◽  
pp. 18820 ◽  
Author(s):  
Barry K. Karch ◽  
Russell C. Hardie
Keyword(s):  
Wiener Filter ◽  
Super Resolution ◽  
Color Filter ◽  
Color Filter Array ◽  
Filter Array
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