Image Processing Reference
In-Depth Information
3. Conclusion
The methods of digital cameras identification allow defining the fact of origin of digital
images from the specific camera. In comparison with artificial digital watermarks embedded
by either the special software, or device modification, identification based on innate
difference of every single camera allows to identify cameras by the analysis of statistical
regularities in digital media. Explicit advantages of the given identification methods are
their applicability to images of consumer cameras without necessity of internals access or
camera firmware modification. Methods of cameras identification on the basis of processing
differences allow to identify cameras vendors. Methods of identification based on non-
uniformities of record path allow to identify separate copies of one model of camera.
Essential hindrance for correct identification of cameras is scaling and rotation of the images
which are exposed to identification process. To ascertain the fact of rotation and its
reversing the Radon transform with the subsequent projections processing by Fourier
transform can be used.
4. References
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