GSPBOX - Filters

Design - N filter

• gsp_design_mexican_hat - Design a mexican hat filterbank
• gsp_design_abspline - Design a abspline filterbank
• gsp_design_meyer - Design a Meyer filterbank (tight)
• gsp_design_simple_tf - Design a simple tight frame filterbank
• gsp_design_itersine - Design a itersine filterbank (tight)
• gsp_design_half_cosine - Design a half cosine filterbank (tight)
• gsp_design_warped_translates - Design a filterbank with a warping function

Design - 2 filter (LP - HP) tight filterbank

• gsp_design_regular - Design 2 filter with the "regular" construction
• gsp_design_held - Design 2 filter with the "Held" construction
• gsp_design_simoncelli - Design 2 filter with the "Simoncelli" construction
• gsp_design_papadakis - Design 2 filter with the "Papadakis" construction

Dual filterbank

• gsp_design_can_dual - Design the canonical dual filterbank
• gsp_evaluate_can_dual - Evaluate the canonical dual of a filterbank
• gsp_test_duality - Test if 2 filterbanks are dual
• gsp_test_duality_coefficient - Test if 2 discrete filterbanks are dual

Low pass filters

• gsp_design_heat - Design a heat kernel filter
• gsp_design_expwin - Design a expwin filter
• gsp_design_smooth_indicator - Design a smooth indicator function

Application

• gsp_filter - Shortcut to gsp_filter_analysis
• gsp_filter_analysis - Analysis operator for filterbank
• gsp_filter_synthesis - Synthesis operator for filterbank
• gsp_filter_inverse - Inverse operator for filterbank

Joint Time-Vertex Filter Design

• gsp_jtv_design_diffusion - Design a diffusion filterbank
• gsp_jtv_design_wave - Design a wave filterbank
• gsp_jtv_design_damped_wave - Design a damped wave filterbank
• gsp_jtv_design_dgw - Design a generic dynamic graph wavelet

Joint Time-Vertex Filter Application

• gsp_jtv_filter_analysis - Analysis operator for time-vertex filterbank
• gsp_jtv_filter_synthesis - Synthesis operator for time-vertex filterbank
• gsp_jtv_filter_evaluate - Evaluate a time-vertex filterbank
• gsp_jtv_filter_array - Convert a ts/js time-vertex filter to a ts/js-array time-vertex filterbank
• gsp_jtv_compute_frame - Return the matrix operator associated to a time-vertex filterbank
• gsp_jtv_evaluate_can_dual - Evaluate the canonical dual of a time-vertex filterbank
• gsp_jtv_design_can_dual - Design the canonical dual of a time-vertex filterbank
• gsp_filter_inverse - Inverse operator for a time-vertex filterbank

Size Handling

• gsp_mat2vec - Matrix to vector representation for filterbanks
• gsp_vec2mat - Vector to matrix representation for filterbanks

Utils

• gsp_approx_filter - Create an approximation of a filterbank with Chebyshev
• gsp_wlog_scales - Compute log scale vector for wavelets
• gsp_filter_evaluate - Evaluate a filterbank
• gsp_filterbank_bounds - Bound for the filterbank
• gsp_tighten_filter - Create a filter that tighten the filterbank
• gsp_warp_filter - Warp a filter
• gsp_multiply_filters - Multiply two filters
• gsp_filterbank_matrix - Return the matrix operator associated to a filterbank

For help, bug reports, suggestions etc. please send email to gspbox 'dash' support 'at' groupes 'dot' epfl 'dot' ch