Joachim Weickert

Research

Research Activities of Joachim Weickert

This page describes earlier research that has been performed by Joachim Weickert until 2001 when he founded the MIA Group at Saarland University. Later research activities by the MIA Group are documented at another web page.

Image Processing – Computer Vision – Scientific Computing – Pattern Recognition – Information Theory – Biomedical Applications – Industrial Applications

• New edge-enhancing models for anisotropic diffusion filtering using a diffusion tensor instead of a scalar-valued diffusivity
  [selected publication] [demo page]

• Coherence-enhancing anisotropic diffusion filters for processing flow-like patterns with parallel lines
  [selected publication] [demo page]

• Theoretical foundations of anisotropic diffusion filters as mathematically well-posed scale-space transformations
  [selected publication]

• Semidiscrete and fully discrete scale-space frameworks for nonlinear diffusion filters
  [selected publication]

• Well-posedness proof for spatially discrete Perona-Malik filters
  [selected publication]

• Anisotropic diffusion filters for multichannel images
  [selected publication] [demo page]

• Anisotropic diffusion filters for three-dimensional data sets
  [selected publication] [demo page]

• Parameter selection criteria for nonlinear diffusion filters
  [selected publication]

• Identification of regularization methods as information-reducing scale-space transformations
  [selected publication]

• Historical analysis of early Japanese scale-space axiomatics
  [selected publication]

• Efficient splitting-based algorithms for discontinuity-preserving variational optic flow calculations
  [selected publication]

• Design of spatio-temporal regularizers in nonlinear variational approaches for optic flow estimation
  [selected publication (in German)]

• New multiscale algorithms for nonconvex optimization problems arising from optic flow approximation in case of large displacements
  [selected publication]

• Analysis of the focusing behaviour of landmarks resulting from differential corner detectors
  [selected publication]

• Global scale selection by means of Lyapunov functionals in linear and nonlinear scale-spaces
  [selected publication]

• Fast scene segmentation with hybrid algorithms that combine the watershed transformation with recursive adaptive filters in image pyramids
  [selected publication]

• Stereo reconstruction using a nonlinear nonconvex variational approach
  [selected publication] [demo page]

• Development of absolutely stable algorithms for nonlinear diffusion processes by combining a semi-implicit discretization with an additive operator splitting (AOS)
  [selected publication]

• Convergence accelaration of AOS schemes for nonlinear elliptic problems by means of a multilevel approach based on a pyramid decomposition
  [selected publication]

• Parallelization of AOS schemes for diffusion filtering on an SGI Power Challenge XL architecture
  [selected publication]

• Performance evaluation of a finite volume, a pseudospectral, and a wavelet-based Petrov-Galerkin method for nonlinear diffusion filtering
  [selected publication]

• Criteria for boundary corrections in pyramid decompositions in order to create corresponding restriction and interpolation operators
  [selected publication]

• Discretizations of anisotropic diffusion equations with low dissipativity and optimized rotation invariance
  [selected publication]

• Texture analysis by means of the fingerprints of generalized entropies in scale-spaces
  [selected publication]

• Shape recognition by integrating statistical shape knowledge into the segmentation functional of Mumford and Shah
  [selected publication]

• Synchronization of nonlinear scale-spaces by means of the Shannon-Wiener entropy
  [selected publication]

• Analysis of the monotony behaviour of Renyi's generalized entropies in linear and nonlinear diffusion processes
  [selected publication]

• Segmentation of three-dimensional MR images of the human brain
  [selected publication]

• Elimination of speckle noise in three-dimensional ultrasound images
  [selected publication]

• Multiscale visualization of trabecular structures in human bones
  [selected publication]

• Enhancement of ophtalmologic MRI sequences from patients with restricted eye movement
  [selected publication]

• Defect detection in wood surfaces using nonlinear diffusion filtering
  [selected publication]

• Multiscale visualization of stripes in nonwoven fabrics
  [selected publication]

• Development of a programme for online quality assessment of the cloudiness in fabrics. It is the basis of the commercial software package MASC-VQC.
  [selected publication]

If you have specific questions or if you would like to get some papers on the topics above, please send an e-mail to weickert@mia.uni-saarland.de.

This page describes earlier research that has been performed by Joachim Weickert until 2001 when he founded the MIA Group at Saarland University. Later research activities by the MIA Group are documented at another web page.

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