A descent matrix-free nonlinear conjugate gradient algorithm for impulse noise removal

Some combined techniques of spectral conjugate gradient methods with applications to robotic and image restoration models

N Salihu, P Kumam, SM Ibrahim, W Kumam - Numerical Algorithms, 2024 - Springer
The spectral conjugate gradient (SCG) methods ensure the descent property of an iterative
scheme by scaling the first term of the search direction in a conjugate gradient (CG) method …
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