IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD

PROBLEM TO BE SOLVED: To provide a mechanism for preventing or reducing degradation in image quality along a block boundary that can occur in an existing method.SOLUTION: An image processing device comprises an inverse transform unit that transforms transform coefficient data of a frequency componen...

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Bibliographic Details
Main Authors WADA YUJI, TAHARA DAISHI
Format Patent
LanguageEnglish
Published 19.09.2013
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:PROBLEM TO BE SOLVED: To provide a mechanism for preventing or reducing degradation in image quality along a block boundary that can occur in an existing method.SOLUTION: An image processing device comprises an inverse transform unit that transforms transform coefficient data of a frequency component of an image including one or more blocks into an image signal by executing integer inverse discrete wavelet transform (inverse DWT). An integer conversion function in the integer inverse discrete wavelet transform has a function graph symmetrical with respect to an origin.
Bibliography:Application Number: JP20120050436