218 search results - page 16 / 44 » Directional Discrete Cosine Transforms for Image Coding |
TIP
2008
14 years 11 months ago
2008
Abstract--In this paper, we derive bounds on the structural similarity (SSIM) index as a function of quantization rate for fixed-rate uniform quantization of image discrete cosine ...
ICMCS
2006
IEEE
15 years 5 months ago
2006
IEEE
In this paper, a fast transform method is proposed to convert MPEG-2 8-tap discrete cosine transform (DCT) coefficients to H.264/AVC 4-tap integer transform coefficients directly ...
GI
2009
Springer
15 years 4 months ago
2009
Springer
Abstract: We present a technique for adding a high-frequency pattern to JPEG images that is imperceptible to the unaided eye, but turns into a clearly readable largeletter warning ...
TCSV
2002
14 years 11 months ago
2002
The compression of still images by means of the discrete wavelet transform (DWT), adopted in the JPEG-2000 and MPEG-4 standards, is becoming more and more widespread because it yie...
ICIP
2005
IEEE
16 years 1 months ago
2005
IEEE
This paper describes the construction of second generation bandelet orthogonal bases. The decomposition on a bandelet basis is computed using a wavelet filter bank followed by ada...