Keyphrases
- black and white
- digital imaging
- gray images
- barcode
- digital images
- gray level
- color images
- photoshop cs
- halftone images
- image editing
- color space
- color information
- secret sharing scheme
- adobe photoshop
- pixel values
- hough transform
- image acquisition
- digital image processing
- error diffusion
- essential information
- color features
- image quality
- input image
- website