Wavelet Image Denoising Whit Threshold

Hello

I want to do de-noise image using commands wdenoise2 and helperCompare2DDenoisingDTCWT.

Is it possible for me to do the de-noise method using Threshold ??

Thanks for your help

[KALYAN ACHARJYA]

Please attach sample image.

[lech king]

pic=imread('lena.jpg');

pic1=rgb2gray(pic);

pic2 = imnoise(pic1,'salt & pepper',0.02);