Robust data retrieval from high-security structural colour QR codes via histogram equalization and decorrelation stretching.
Mahssa AbdolahiHao JiangBozena KaminskaPublished in: UEMCON (2019)
Keyphrases
- histogram equalization
- data retrieval
- high security
- image enhancement
- contrast enhancement
- gray scale
- qr codes
- gray level
- databases
- image encryption
- information retrieval
- dynamic range
- image processing
- data access
- query processing
- transfer function
- security analysis
- co occurrence
- image quality
- image data
- video sequences
- web databases
- image segmentation