A Fast Implementation of Bilateral Filter Based on Edge Protection

ABSTRACT

To improve the arithmetic speed of bilateral filter, an improved ascending dimension bilateral filtering algorithm was proposed. The algorithm based on linearization the bilateral filter and the mapping image matrix to improve the operation speed, inverse mapping the calculation to restore the image matrix after the total area filtering of the mapping image. In the process of filtering, in order to preserve the edge of image while denoising, According to the information extracted from image phase consistency, self-adaptive to adjust the Spatial proximity factor and gray similarity factor. Through the experiment results from subjectivity and objectivity, this algorithm of the bilateral filtering can not only improve the speed, but also retained more of the image edge information during the denoising.

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