A Hybrid Lossy Compression Using 2-D Discrete Cosine Transform and Visual Cryptographic Technique for Security of Multimedia Image Data Communications in Internet of Things.
Quist-Aphetsi KesterPublished in: AFRICOMM (2016)
Keyphrases
- lossy compression
- image quality
- image data
- multimedia
- lossless compression
- encryption scheme
- security protocols
- image compression
- key management
- compression ratio
- bit rate
- pattern matching
- visual information
- visual features
- digital libraries
- visual quality
- smart card
- data hiding
- low bit rate
- multimedia data
- human visual system
- digital watermarking
- image content
- high quality
- feature extraction
- watermarking algorithm
- pixel values
- compression algorithm
- digital images
- image processing
- metadata