Total variation denoising (an MM algorithm)
Ivan Selesnick · 2012
Total variation denoising (TVD) is an approach for noise reduction developed so as to preserve sharp edges in the underlying signal [14]. Unlike a conventional low-pass filter, TV denoising is defined in terms of an optimization problem. The output of the TV denoising ‘filter ’ is obtained by minimizing a particular cost function. Any algorithm that solves the optimization problem can be used to implement TV denoising.