160 search results - page 10 / 32 » Image resizing in the discrete cosine transform domain |
ICIP
2001
IEEE
15 years 11 months ago
2001
IEEE
In lossy image compression schemes utilizing the discrete cosine transform (DCT), quantization of the DCT coefficients introduces error in the image representation and a loss of s...
ICIP
2008
IEEE
15 years 11 months ago
2008
IEEE
In this paper, we analyze the formation of blocking artifacts as a result of quantization of the discrete cosine transform (DCT) coefficients. These artifacts are known to be the ...
ICIP
2006
IEEE
15 years 11 months ago
2006
IEEE
In this study we propose a new approach for selective encryption in the Huffman coding of the Discrete Cosine Transform (DCT) coefficients using the Advanced Encryption Standard (...
ISCIS
2003
Springer
15 years 2 months ago
2003
Springer
This paper presents a postprocessing technique based on the theory of projections onto convex sets (POCS) to reduce the blocking artifacts in low bit rate BDCT-coded images. In the...
TCSV
2002
14 years 9 months ago
2002
Transform approximations are explored for speeding up the software compression of images and video. Approximations are used to replace the regular discrete cosine transform (DCT) w...