1-D	One-dimensional
2-D	Two-dimensional
2D-HSM	Two-dimensional Henon-Sine map
CD	Cpestral Distance
CPU	Central Processing Unit
DDE	Delay Differential Equation
DFT	Discrete Fourier Transform
DNA	Deoxyribonucleic Acid
DRM	Digital Rights Management
HDD	Hard Disk Drive
LPC	Linear Predicative Code
MPU	Microprocessing Unit
MSE	Mean Square Error
NMSE	Normalized Mean Square Error
NPCR	Number of Pixels Change Rate
PSNR	Peak Signal-to-Noise-Ratio
PT	Processing Time
RAM	Random-Access Memory
SNR	Signal to Noise Ratio
SNRseg	Time-Domain Segemntal SNR
SSSNR	Segmental Spectral Signal to Noise Ratio
UACI	Unified Average Changing Intensity