616 search results - page 5 / 124 » DCT Based High Quality Image Compression |
138
Voted
IPAS
2007
15 years 6 months ago
2007
A practical impossibility of prediction of signs of DCT coefficients is generally accepted. Therefore each coded sign of DCT coefficients occupies usually 1 bit of memory in compr...
127
Voted
IDA
2009
Springer
15 years 10 months ago
2009
Springer
In this paper, an algorithm for image coding based on a sparse 3-dimensional Discrete Cosine Transform (3D DCT) is studied. The algorithm is essentially a method for achieving a su...
103
Voted
ICIP
2004
IEEE
16 years 5 months ago
2004
IEEE
A new method, using weighted combinations of shifted transforms, is developed for deringing and deblocking DCT compressed color images. The method shows substantial deringing impr...
100
Voted
ICIP
1999
IEEE
16 years 5 months ago
1999
IEEE
113
Voted
ICASSP
2011
IEEE
14 years 7 months ago
2011
IEEE
In this paper, we propose a statistical test to discriminate between original and forged regions in JPEG images, under the hypothesis that the former are doubly compressed while t...