Minimal Block Knight's Tour and Edge with LSB Pixel Replacement Based Encrypted Image Steganography.
B. S. ShashikiranK. ShailaK. R. VenugopalPublished in: SN Comput. Sci. (2021)
Keyphrases
- edge direction
- edge map
- adjacent pixels
- block wise
- gradient magnitude
- digital images
- block boundaries
- edge pixels
- edge detection
- image blocks
- traveling salesman problem
- edge information
- gray value
- detected edges
- weighted graph
- pixel values
- intensity variations
- input image
- data hiding
- gradient field
- image derivatives
- spatial domain
- image quality
- binary images
- absolute difference
- intensity gradient
- image reconstruction
- dct coefficients
- edge detector
- interpolation method
- dct domain
- image sequences