50 search results - page 7 / 10 » DCT quantization noise in compressed images |
ISCAS
2005
IEEE
14 years 3 months ago
2005
IEEE
: - In this paper, we propose a multichannel SVD-based image de-noising algorithm. The IntDCT is employed to decorrelate the image into sixteen subbands. The SVD is then applied to...
PCM
2009
Springer
14 years 2 months ago
2009
Springer
Abstract. In this paper, we propose an image moment-based geometric normalization to be applied before embedding and extracting a digital watermark in the DWT-domain of JPEG2000. A...
DCC
2004
IEEE
14 years 9 months ago
2004
IEEE
Many technical imaging applications, like coding "images" of digital elevation maps, require extracting regions of compressed images in which the pixel values are within...
ICC
2007
IEEE
14 years 4 months ago
2007
IEEE
—In this paper, we present an original image quality metric for open-loop transcoding architectures based on frequency selective transmission. The proposed metric computes the no...
ICASSP
2007
IEEE
14 years 4 months ago
2007
IEEE
Recently, Narozny et al [1] proposed a new viewpoint in variable high-rate transform coding. They showed that the problem of finding the optimal 1-D linear block transform for a ...