Näytetään aineistoja, joilla on samankaltainen nimeke tai asiasanat.

• A GPU-Accelerated Augmented Lagrangian Based L1-mean Curvature Image Denoising Algorithm Implementation 

  Myllykoski, Mirko; Glowinski, Roland; Kärkkäinen, Tommi; Rossi, Tuomo (Union Agency, 2015)

  This paper presents a graphics processing unit (GPU) implementation of a recently published augmented Lagrangian based L1-mean curvature image denoising algorithm. The algorithm uses a particular alternating direction ...

• A parallel radix-4 block cyclic reduction algorithm 

  Myllykoski, Mirko; Rossi, Tuomo (John Wiley & Sons Ltd., 2014)

  A conventional block cyclic reduction algorithm operates by halving the size of the linear system at each reduction step, that is, the algorithm is a radix-2 method. An algorithm analogous to the block cyclic reduction ...

• Fast Poisson solvers for graphics processing units 

  Myllykoski, Mirko; Rossi, Tuomo; Toivanen, Jari (Springer, 2013)

  Two block cyclic reduction linear system solvers are considered and implemented using the OpenCL framework. The topics of interest include a simplified scalar cyclic reduction tridiagonal system solver and the impact ...

• A New Augmented Lagrangian Approach for L1-mean Curvature Image Denoising 

  Myllykoski, Mirko; Glowinski, Roland; Kärkkäinen, Tommi; Rossi, Tuomo (Society for Industrial and Applied Mathematics, 2015)

  Variational methods are commonly used to solve noise removal problems. In this paper, we present an augmented Lagrangian-based approach that uses a discrete form of the L1-norm of the mean curvature of the graph of the ...

• Optimization-based techniques for image restoration 

  Majava, Kirsi (University of Jyväskylä, 2001)

  Kohinanpoisto on olennainen osa kuvankäsittelyä. FL Kirsi Majavan väitöskehittää uuden menetelmän, jolla paljon häiriötä sisältävästä kuvasta löytyvät sekä jyrkät rajat että sileät osat. Ne ovat perinteisen kuvankäsittelyn ...