< 75% 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_075.zip    impnoise_075_seq.zip
PSNR statistics: min: 22.17 dB (100098.png) max: 35.76 dB (299091.png) avg: 27.3 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

75% salt-and-pepper noise, 100098.png, PSNR: 22.17 dB

75% salt-and-pepper noise, 105053.png, PSNR: 33.24 dB

75% salt-and-pepper noise, 106020.png, PSNR: 25.97 dB

75% salt-and-pepper noise, 108073.png, PSNR: 25.8 dB

75% salt-and-pepper noise, 118020.png, PSNR: 24.74 dB

75% salt-and-pepper noise, 118035.png, PSNR: 27.71 dB

75% salt-and-pepper noise, 12003.png, PSNR: 26.71 dB

75% salt-and-pepper noise, 124084.png, PSNR: 29.45 dB

75% salt-and-pepper noise, 145014.png, PSNR: 23.41 dB

75% salt-and-pepper noise, 159045.png, PSNR: 25.06 dB

75% salt-and-pepper noise, 161062.png, PSNR: 30.87 dB

75% salt-and-pepper noise, 176035.png, PSNR: 28.26 dB

75% salt-and-pepper noise, 187003.png, PSNR: 24.59 dB

75% salt-and-pepper noise, 189003.png, PSNR: 24.28 dB

75% salt-and-pepper noise, 189011.png, PSNR: 30.16 dB

75% salt-and-pepper noise, 209070.png, PSNR: 28.64 dB

75% salt-and-pepper noise, 253036.png, PSNR: 31.91 dB

75% salt-and-pepper noise, 299091.png, PSNR: 35.76 dB

75% salt-and-pepper noise, 317080.png, PSNR: 27.27 dB

75% salt-and-pepper noise, 385028.png, PSNR: 26.28 dB

75% salt-and-pepper noise, 56028.png, PSNR: 23.87 dB

75% salt-and-pepper noise, 65010.png, PSNR: 26.48 dB

75% salt-and-pepper noise, 67079.png, PSNR: 26.2 dB

75% salt-and-pepper noise, 97017.png, PSNR: 26.31 dB
Result were obtained with the assistance of Dong Yiqiu and Prof. Raymond Chan

The Berkley Segmentation Dataset and Benchmark