Edge-preserving filtering by projection onto L0 gradient constraint

  title={Edge-preserving filtering by projection onto L0 gradient constraint},
  author={Shunsuke Ono},
  journal={2017 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)},
We propose an edge-preserving filtering method with a novel use of the L0 gradient. Our method, termed as the L0 gradient projection, is formulated as the minimization of a quadratic data-fidelity to an input image subject to the constraint that the L0 gradient, the number of non-zero gradients, of the output image is less than a user-given parameter α. This strategy is much more intuitive than the conventional approach, the L0 gradient minimization, that minimizes the sum of the L0 gradient… CONTINUE READING