Watermarking for Halftoned Images using Error Diffusion with Nonlinear Thresholding.
Omid TaheriAhmad Movahedian AttarRasoul Amir FattahiShadrokh SamaviPublished in: CCECE (2006)
Keyphrases
- error diffusion
- inverse halftoning
- gray scale
- gray scale images
- halftoning algorithm
- gray level
- error diffused images
- halftone images
- image quality
- input image
- data hiding
- image data
- edge detection
- human visual system
- error diffused
- gray value
- binary images
- image segmentation
- digital images
- image coding
- original images
- frequency domain
- image retrieval
- contrast enhancement
- multiple images
- visual quality
- black and white
- bit rate
- denoising
- image processing