clarifying the paper

We would like to thank the reviewers for their comments and remarks. Reviewers #1 and #4 inquired about the quality of our method with smaller training sets. Training images Method all 10 000 1000 500 300 200 100 (10 runs) Baseline, N2C 31.60 31.59 Reviewer #1 remarked that our experiments are performed on synthetic data only. As the non-learned CBM3D method is also designed for natural images, we feel that our comparisons are fair.