Original title:
Hidden Periodicity in Interpolated Signals and in Their Derivatives
Translated title:
Skyté periodicity v interpolovaných signálech a jejich derivacích
Authors:
Saic, Stanislav ; Mahdian, Babak Document type: Research reports
Year:
2007
Language:
eng Series:
Research Report, volume: 2182 Abstract:
[eng][cze] Many applications like, texture analysis, image registration, etc., are based on interpolation. Therefore, without the detailed knowledge of how the statistics of the signal is changed by the interpolation process, applications based on statistical approaches working with interpolated signals or with their derivatives can yield miscalculations and unexpected results. Therefore a detailed knowledge about the changes brought into the signal by interpolation could be critical. Sometimes, there exists a need to examine whether a signal has been interpolated.Řada aplikací jako texturní analýza, registrace obrazů a další jsou založeny na interpolaci. Detailní informace o změně statistických vlastností interpolovaného signálu a jeho derivací může pomoci při identifikaci zda a jak byl zkoumaný signál interpolován.
Keywords:
image forgery; image processing; Periodicity Project no.: CEZ:AV0Z10750506 (CEP)
Institution: Institute of Information Theory and Automation AS ČR
(web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences. Original record: http://hdl.handle.net/11104/0144937