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» Image resizing in the discrete cosine transform domain
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ICCD
2000
IEEE
87views Hardware» more  ICCD 2000»
16 years 2 months ago
A Register File with Transposed Access Mode
We introduce a new register file architecture that provides both row-wise and column-wise accesses, thus allowing partitioned instructions to be used in columnwise processing with...
Yoochang Jung, Stefan G. Berg, Donglok Kim, Yongmi...
DCC
2008
IEEE
15 years 7 months ago
Rate Bounds on SSIM Index of Quantized Image DCT Coefficients
In this paper, we derive bounds on the Structural SIMilarity (SSIM) Index as a function of quantization rate for fixed-rate uniform quantization of image discrete cosine transform...
Sumohana S. Channappayya, Alan C. Bovik, Robert W....
TIP
2008
84views more  TIP 2008»
15 years 6 months ago
Rate Bounds on SSIM Index of Quantized Images
Abstract--In this paper, we derive bounds on the structural similarity (SSIM) index as a function of quantization rate for fixed-rate uniform quantization of image discrete cosine ...
Sumohana S. Channappayya, Alan C. Bovik, Robert W....
ICIP
2005
IEEE
16 years 7 months ago
An adaptive DCT-based Mod-4 steganographic method
This paper presents a novel Mod-4 steganographic method in discrete cosine transform (DCT) domain. A group of 2?2 quantized DCT coefficients (GQC) is selected as the valid embeddi...
Xiaojun Qi, KokSheik Wong
IJNSEC
2008
98views more  IJNSEC 2008»
15 years 6 months ago
A New General Transparency Model for Block-based Watermarking Method
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...
Fangjun Huang