< 25% 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_025.zip    impnoise_025_seq.zip
PSNR statistics: min: 30.72 dB (100098.png) max: 42.53 dB (299091.png) avg: 35.55 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

25% salt-and-pepper noise, 100098.png, PSNR: 30.72 dB

25% salt-and-pepper noise, 105053.png, PSNR: 41.29 dB

25% salt-and-pepper noise, 106020.png, PSNR: 35.18 dB

25% salt-and-pepper noise, 108073.png, PSNR: 33.57 dB

25% salt-and-pepper noise, 118020.png, PSNR: 32.68 dB

25% salt-and-pepper noise, 118035.png, PSNR: 37.42 dB

25% salt-and-pepper noise, 12003.png, PSNR: 35.46 dB

25% salt-and-pepper noise, 124084.png, PSNR: 37.61 dB

25% salt-and-pepper noise, 145014.png, PSNR: 31.86 dB

25% salt-and-pepper noise, 159045.png, PSNR: 33.29 dB

25% salt-and-pepper noise, 161062.png, PSNR: 37.85 dB

25% salt-and-pepper noise, 176035.png, PSNR: 35.94 dB

25% salt-and-pepper noise, 187003.png, PSNR: 32.98 dB

25% salt-and-pepper noise, 189003.png, PSNR: 32.68 dB

25% salt-and-pepper noise, 189011.png, PSNR: 39.9 dB

25% salt-and-pepper noise, 209070.png, PSNR: 38.03 dB

25% salt-and-pepper noise, 253036.png, PSNR: 40.33 dB

25% salt-and-pepper noise, 299091.png, PSNR: 42.53 dB

25% salt-and-pepper noise, 317080.png, PSNR: 35.31 dB

25% salt-and-pepper noise, 385028.png, PSNR: 33.19 dB

25% salt-and-pepper noise, 56028.png, PSNR: 32.18 dB

25% salt-and-pepper noise, 65010.png, PSNR: 34.05 dB

25% salt-and-pepper noise, 67079.png, PSNR: 34.63 dB

25% salt-and-pepper noise, 97017.png, PSNR: 34.63 dB
Result were obtained with the assistance of Dong Yiqiu and Prof. Raymond Chan

The Berkley Segmentation Dataset and Benchmark