CodeReviews

Image processing

Interactive Segmentation

• http://kspace.cdvp.dcu.ie/public/interactive-segmentation/ (graph cuts)
• MITK: http://www.mitk.org/wiki/Interactive_segmentation

kernel density estimation

• http://www.umiacs.umd.edu/~vikas/Software/optimal_bw/optimal_bw_code.htm

Sparse representation

• KSVD
• file: KSVD_Matlab_Toolbox.zip
  • desc: training dictionaries, the page of michael elad is worth reading, points to other software packages.
  • url: http://www.cs.technion.ac.il/~elad/software/

Demo of sparsity with ECG signals

• desc: trains a dictionary of 300 signals to represent ECG signals and compares it with a PCA decomposition
• data:
  • approx. 3000 ECG training signals (of the same type of QRS complex)
  • each 73-sample signal represents an "heart beat" (QRS complex), sampled at 350Hz.
  • download it here: http://iie.fing.edu.uy/~juanc/files/sparse/sparse_data.tar.gz
• code:
  • download it here: http://iie.fing.edu.uy/~juanc/files/sparse/sparse_code.tar.gz
  • requires KSVD_Matlab_Toolbox.zip to work
  • dictionary.m: train dictionary
  • prueba_sparse.m: decompose a signal into PCA and the sparse dictionary and compare results.