Index

Test

image

SNR

Original image

Histogram equalization

Three-Gaussian

Adaptive three-Gaussian

Lenna

64.6106

62.6490

61.8363

61.9148

Goldhill

64.9061

62.4141

61.8287

61.5272

Sailboat

62.8929

60.6578

61.8346

60.4178

Zelda

65.6947

61.8349

63.3216

62.8684