In this letter we propose to denoise digital color images via an improved geometric diffusion scheme. By introducing edges detected from all three color channels into the diffusion the proposed scheme avoids color smearing artifacts. Vector valued diffusion is used to control the smoothing and the geometry of color images are taken into consideration. Color edge strength function computed from different planes is introduced and it stops the diffusion spread across chromatic edges. Experimental results indicate that the scheme achieves good denoising with edge preservation when compared to other related schemes.
@article{arxiv.1304.5587,
title = {Color image denoising by chromatic edges based vector valued diffusion},
author = {V. B. Surya Prasath and Juan C. Moreno and K. Palaniappan},
journal= {arXiv preprint arXiv:1304.5587},
year = {2013}
}
Comments
Submitted to IEEE Signal Processing Letters, 4 pages, 4 figures, 2 tables. Some mistakes were corrected from previous version