Title :
Automatic detection of digital zooms
Author :
Buzzi, Jérôme ; Guichard, Frédéric
Author_Institution :
DOLabs, France
Abstract :
We propose and evaluate a method to determine whether a given digital image is the result of a digital zoom in or more generally of a linear interpolation. This information is important to some post-processing. It also sheds some light on the actual resolution of some digital cameras.
Keywords :
cameras; data compression; image coding; image resolution; interpolation; automatic detection; digital camera; digital image; digital zoom; linear interpolation; Digital cameras; Digital images; Discrete cosine transforms; Image coding; Image databases; Image reconstruction; Indexes; Interpolation; Motion pictures; Transform coding;
Conference_Titel :
Image Processing, 2004. ICIP '04. 2004 International Conference on
Print_ISBN :
0-7803-8554-3
DOI :
10.1109/ICIP.2004.1421739
