Image negatives
- output = L-1-input : [0, L-1]
Log transformation
- output = c log (1+input) : λκ² Mapping
Power-Law (Gamma) transformation
- output = c input ^ πΎ
- πΎ < 1 : κ²μ μμμ detail μ¦κ° β λ°μ λΆμκΈ°λ‘
- πΎ > 1 : ν° μμμ detail μ¦κ° β μ΄λμ΄ λΆμκΈ°λ‘
Piecewise-linear transformation
- μ‘°κ° λ¨μ β can form more complex