Protecting Digital Images Using DTCWT-DCT.
K. RamaniE. V. PrasadS. VaradarajanPublished in: ICT (2010)
Keyphrases
- digital images
- image blocks
- discrete cosine transform
- dual tree complex wavelet transform
- image compression
- dct domain
- spatial domain
- jpeg compressed images
- transform domain
- watermark detection
- dct coefficients
- access control
- discrete cosine transformation
- jpeg images
- blocking artifacts
- black and white
- low bit rate
- frequency domain
- digital watermarking
- copyright protection
- color correction
- adobe photoshop
- image processing