Image Denoising

We provide denoising results and comparisons for a variety of images and methods:

Standard Test Images

Click on image name for original image.

Click on noise level for a comparison between noisy image (with given standard deviation) and denoising result.

Name Noisy image vs. denoised image
Barbara 10 15 20 25
Boats 10 15 20 25
House 10 15 20 25
Lena 10 15 20 25
Peppers 10 15 20 25

Denoising performance

Denoising performance (PSNR) for given noise level
Name 10 15 20 25
Barbara 32.83 dB 30.22 dB 28.32 dB 27.04 dB
Boats 33.05 dB 31.22 dB 29.85 dB 28.72 dB
House 35.06 dB 33.48 dB 32.17 dB 31.11 dB
Lena 35.04 dB 33.27 dB 31.92 dB 30.82 dB
Peppers 34.28 dB 32.03 dB 30.58 dB 29.20 dB

Berkeley Database Images

Click on image name for original image.

Click on noise level for a comparison between noisy image (with given standard deviation) and denoising result.

Name Noisy image vs. denoised image
102061 (Castle) 10 15 20 25
119082 10 15 20 25
219090 10 15 20 25

Comparison of Various Methods

Original image

Noisy image (sigma = 25)

Denoised with FoE

Denoised with Portilla et al. method

Denoised with nonlinear diffusion (stopped at optimal PSNR)

Denoised with Wiener filter (3x3)

Clich here for more information on the Denoising with Portilla et al. method