LamTangYu

From Psych 221 Image Systems Engineering
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Introduction

The purpose of the camera forensics project is to automatically detect whether an image, that was produced by CFA interpolation, was tampered with. CFA interpolation is used by digital camera to generate digital images. The interpolation will result in specific statistical patterns in the pixels of an image, which and then be utilized to determined whether or not an image has been altered.

Background

What is CFA Interpolation?

Different Types of CFA Interpolation Techniques

Bilinear/Bicubic

Smooth Hue Transition

Median Filter

Gradient Based

Adaptive Color Plane

Threshold-Based Variable Number of Gradients

Methods

EM Algorithm

E-Step

M-Step

Results

Conclusions

References - Resources and related work

References

Software

Appendix I - Code and Data

Code

File:CodeFile.zip

Data

zip file with my data

Appendix II - Work partition (if a group project)

Brian and Bob gave the lectures. Jon mucked around on the wiki.