218 search results - page 3 / 44 » Directional Discrete Cosine Transforms for Image Coding |
ICIP
2000
IEEE
14 years 7 months ago
2000
IEEE
ICASSP
2010
IEEE
13 years 6 months ago
2010
IEEE
This paper proposes a new approach to combined spatial (Intra) prediction and adaptive transform coding in block-based video and image compression. Context-adaptive spatial predic...
JEI
2008
13 years 4 months ago
2008
Abstract. A removable visible watermarking scheme, which operates in the discrete cosine transform (DCT) domain, is proposed for combating copyright piracy. First, the original wat...
PRL
2006
13 years 6 months ago
2006
In this paper we present a novel measure of camera focus based on the Bayes spectral entropy of an image spectrum. In order to estimate the degree of focus, the image is divided i...
ICIP
2008
IEEE
14 years 8 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 ...