Title :
Image enhancement in the 2D DCT domain using a band-adaptive contrast modification
Author :
Vale, Eduardo Esteves ; Alcaim, Abraham
Author_Institution :
CETUC, PUC/Rio, Rio de Janeiro
Abstract :
A new algorithm for image enhancement in the two dimensional discrete cosine transform (2D DCT) domain is presented. The proposed scheme uses a band-adaptive contrast modification to enhance a large number of image details. In addition, it avoids noise amplification during the enhancement process. Experiments show the effectiveness of the proposed scheme as compared to other techniques reported in the literature. The new method was applied in the decompression domain of a DCT-based codec.
Keywords :
codecs; discrete cosine transforms; image enhancement; 2D DCT domain; DCT-based codec; band-adaptive contrast modification; decompression domain; image enhancement; noise amplification; two dimensional discrete cosine transform domain; Codecs; Computational efficiency; Discrete cosine transforms; Frequency; Image coding; Image enhancement; Image quality; Image storage; Low-frequency noise; Pollution measurement; Image enhancement; contrast modification; discrete cosine transform;
Conference_Titel :
Communications, Control and Signal Processing, 2008. ISCCSP 2008. 3rd International Symposium on
Conference_Location :
St Julians
Print_ISBN :
978-1-4244-1687-5
Electronic_ISBN :
978-1-4244-1688-2
DOI :
10.1109/ISCCSP.2008.4537467
