Image Denoising Algorithm via Doubly Bilateral Filtering

The classical bilateral filtering is a simple and effective non-iterative image denoising method in spatial domain which can smooth the noisy images while preserving edges well. To further improve the denoising performance, an image deonoising algorithm via doubly bilateral filtering is proposed. We first use the bilateral filtering to get the pilot image. Then, using the information of the pilot image, the second bilateral filtering is used to get the final denoised image. Experiment results show that the proposed image denoising algorithm achieves better performance than the classical bilateral filtering method.