218 search results - page 17 / 44 » Directional Discrete Cosine Transforms for Image Coding |
ICMCS
2007
IEEE
14 years 1 months ago
2007
IEEE
This paper investigates the use of the anisotropic 3-D dualtree discrete wavelet transform (DDWT) for video coding. The 3-D DDWT is an attractive video representation because it i...
TIP
2010
13 years 1 months ago
2010
Abstract--While directional adaption is introduced into traditional transforms, different orders of two 1-D transforms will result in different results of one 2-D transform. Based ...
PCM
2005
Springer
14 years 8 days ago
2005
Springer
In this paper, a new multiple description image coding scheme using directional lifting transform is proposed. The basic idea is to divide an image into two descriptions with quinc...
ICIP
2002
IEEE
14 years 8 months ago
2002
IEEE
Geometric attacks are among the most challenging problems in present day watermarking. Such attacks are very simple to implement yet they can defeat most of the existing watermark...
PAMI
2007
13 years 6 months ago
2007
—This paper presents a novel iris coding method based on differences of discrete cosine transform (DCT) coefficients of overlapped angular patches from normalized iris images. Th...