15 search results - page 2 / 3 » Contrast based quantization and rate control for wavelet cod... |
DCC
2000
IEEE
13 years 9 months ago
2000
IEEE
This paper contains two contributions to very-low-bitrate video coding. First, we show that in contrast to common practice incremental techniques for rate-distortion optimization ...
ICIP
2006
IEEE
14 years 7 months ago
2006
IEEE
In motion-compensated wavelet based video coders (MCWT), it is known that a precise motion estimation is necessary to minimize the wavelet coefficients energy. However, a motion v...
TIP
2002
13 years 4 months ago
2002
This paper presents a discrete cosine transform (DCT)-based locally adaptive perceptual image coder, which discriminates between image components based on their perceptual relevanc...
ICIP
2001
IEEE
14 years 6 months ago
2001
IEEE
A multiple description scalar quantization (MDSQ) based coding system can be regarded as a source coder (quantizer) followed by a channel coder, i.e. the combination of index and ...
ICIP
2008
IEEE
14 years 7 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 ...