< 40% salt-and-pepper noise (Chan's filter) >
Image set: original | corrupted | adamed05 | 4bank | chan
Noise intensity:  5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 
Files for download: impnoise_040.zip    impnoise_040_seq.zip
PSNR statistics: min: 27.72 dB (100098.png) max: 40.02 dB (299091.png) avg: 32.66 dB
Filter description: Results were obtained by AM-IEPR method based on salt-and-pepper removal proposed by Prof. Chan (link).
Description of improved AM-IEPR method is available here

40% salt-and-pepper noise, 100098.png, PSNR: 27.72 dB

40% salt-and-pepper noise, 105053.png, PSNR: 38.63 dB

40% salt-and-pepper noise, 106020.png, PSNR: 32.13 dB

40% salt-and-pepper noise, 108073.png, PSNR: 30.97 dB

40% salt-and-pepper noise, 118020.png, PSNR: 29.87 dB

40% salt-and-pepper noise, 118035.png, PSNR: 34.22 dB

40% salt-and-pepper noise, 12003.png, PSNR: 32.41 dB

40% salt-and-pepper noise, 124084.png, PSNR: 34.7 dB

40% salt-and-pepper noise, 145014.png, PSNR: 28.8 dB

40% salt-and-pepper noise, 159045.png, PSNR: 30.32 dB

40% salt-and-pepper noise, 161062.png, PSNR: 35.2 dB

40% salt-and-pepper noise, 176035.png, PSNR: 33.17 dB

40% salt-and-pepper noise, 187003.png, PSNR: 30.04 dB

40% salt-and-pepper noise, 189003.png, PSNR: 29.67 dB

40% salt-and-pepper noise, 189011.png, PSNR: 36.71 dB

40% salt-and-pepper noise, 209070.png, PSNR: 34.86 dB

40% salt-and-pepper noise, 253036.png, PSNR: 37.66 dB

40% salt-and-pepper noise, 299091.png, PSNR: 40.02 dB

40% salt-and-pepper noise, 317080.png, PSNR: 32.29 dB

40% salt-and-pepper noise, 385028.png, PSNR: 30.53 dB

40% salt-and-pepper noise, 56028.png, PSNR: 29.44 dB

40% salt-and-pepper noise, 65010.png, PSNR: 31.41 dB

40% salt-and-pepper noise, 67079.png, PSNR: 31.54 dB

40% salt-and-pepper noise, 97017.png, PSNR: 31.65 dB
Result were obtained with the assistance of Dong Yiqiu and Prof. Raymond Chan

The Berkley Segmentation Dataset and Benchmark