218 search results - page 7 / 44 » Directional Discrete Cosine Transforms for Image Coding |
85
Voted
IDEAL
2004
Springer
15 years 3 months ago
2004
Springer
Abstract. Image compression methods such as JPEG use quantisation of discrete cosine transform (DCT) coefficients of image blocks to produce lossy compression. During decoding, an...
82
Voted
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...
TIP
2008
14 years 9 months ago
2008
In this paper, we explore the application of 2-D dual-tree discrete wavelet transform (DDWT), which is a directional and redundant transform, for image coding. Three methods for sp...
96
Voted
ICIP
2007
IEEE
15 years 11 months ago
2007
IEEE
We propose an image coding scheme using 2-D anisotropic dual-tree discrete wavelet transform (DDWT). First, we extend 2-D DDWT to anisotropic decomposition, and obtain more direct...
119
click to vote
MM
1994
ACM
15 years 1 months ago
1994
ACM
In this paper we propose a technique for segmenting images by texture content with application to indexing images in a large image database. Using a quad-tree decomposition, textu...