An Efficient FPGA Implementation of Optimized Anisotropic Diffusion Filtering of Images

Figure 19

Results show two graphical plots: (a) measures the change of PSNR values against the parameter kappa () (cf. in (4)) used to compute the diffusion coefficient (), which reflects an optimum value in the range of 15 to 17 needed to obtain the denoised accuracy as shown with the pointers in the graphs. (b) shows a single value for yields the maximum denoised output for different images of varying resolutions; the rest of the filter settings remain the same.

(a)

(b)