13 search results - page 2 / 3 » Blocking Artifact Free Inverse Discrete Cosine Transform |
IDEAL
2004
Springer
13 years 10 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...
TCSV
2002
13 years 5 months ago
2002
A novel frequency-domain technique for image blocking artifact detection and reduction is presented in this paper. The algorithm first detects the regions of the image which presen...
EUROPAR
2005
Springer
13 years 11 months ago
2005
Springer
In H.264/AVC [1], integer transforms are applied instead of the 8×8 discrete cosine transform (DCT) of previous standards to avoid inverse transform mismatch problems. However, th...
ICMCS
2006
IEEE
13 years 11 months ago
2006
IEEE
A new postprocessing method based on adjusted contourlet transform is introduced in this paper for suppressing blocking artifacts (BA) in block-based discrete cosine transform (BD...
IJNSEC
2008
13 years 5 months ago
2008
Blocking artifact is one of the main drawbacks of the block-based watermarking method. Though a number of researches on "transparent" digital watermarking system have be...