Quantization is the process of constraining an input from a continuous or otherwise large set of values (such as the real numbers) to a discrete set (such as the integers). The term quantization may refer to:

• Quantization (signal processing)
  • Quantization (image processing)
    • Color quantization
  • Vector quantization
  • Quantization (music)

• Quantization (physics)
  • Canonical quantization
  • Geometric quantization
• Discrete spectrum, or otherwise discrete quantity
  • Spatial quantization
  • Charge quantization

• The process of making the signal discrete in amplitude by approximating the sampled signal to the nearest pre-defined level is called as quantization

• Quantization (linguistics)

• Quantification (science)