next up previous
Next: About this document ... Up: Setting Files Previous: Knot-Points

Objective Functions

In the OF experiments, the following file was used with variation in the objective functions used.

///////////////////////////////////////////////////////////

// GENERAL ARGUMENTS 
 

matcher: comp_region_matcher

sampler: raw_intensity

pair_tex_objective_fn: mi { }

pair_shape_objective_fn: def_energy { } // Typical values 0.001

pair_tex_weighting: 0.5

group_tex_objective_fn: wtd_abs_diff { }

group_shape_objective_fn: def_energy { }

group_tex_weighting: 0.00005

points_selector: all { border: 1 fi_lo: 0.10 fi_hi: 0.9 fj_lo: 0.1 fj_hi: 0.9 }

pyr_builder: gaussian

warps_affect_warp_regions: false

images: {

/home/S00/schestr0/NRR/BrainExperiments/DemBrains/abra_l_auto

/home/S00/schestr0/NRR/BrainExperiments/DemBrains/bowl_i_auto


 

///////////////////////////////////////////////////////////

// TRANSLATION STAGE 
 

pairwise_stage: {

warper: translation

warp_penalty_fn: zero { }

region_picker: all { }

levels: 1 2

optimisation_method: simplex

param_tol: 0.001

use_exhaustive_search: false

n_per_dim: 5

optimise_many_warps: false


 

///////////////////////////////////////////////////////////

// SCALING STAGE 
 

pairwise_stage: {

warper: scale

warp_penalty_fn: zero { }

region_picker: all { }

levels: 1 2

optimisation_method: simplex

param_tol: 0.001

use_exhaustive_search: false

n_per_dim: 5

optimise_many_warps: false


 

///////////////////////////////////////////////////////////

// TRANSLATION STAGE 
 

pairwise_stage: {

warper: translation

warp_penalty_fn: zero { }

region_picker: all { }

levels: 1 2

optimisation_method: simplex

param_tol: 0.001

use_exhaustive_search: false

n_per_dim: 5

optimise_many_warps: false


 

///////////////////////////////////////////////////////////

// SCALING STAGE 
 

pairwise_stage: {

warper: scale

warp_penalty_fn: zero { }

region_picker: all { }

levels: 1 2

optimisation_method: simplex

param_tol: 0.001

use_exhaustive_search: false

n_per_dim: 5

optimise_many_warps: false


 

///////////////////////////////////////////////////////////

// AFFINE STAGE 
 

pairwise_stage: {

warper: affine

warp_penalty_fn: zero { }

region_picker: all { }

levels: 2 2

optimisation_method: simplex

param_tol: 0.001

use_exhaustive_search: false

n_per_dim: 5

optimise_many_warps: false


 

pairwise_stage: {

warper: affine

warp_penalty_fn: zero { }

region_picker: all { }

levels: 1 1

optimisation_method: simplex

param_tol: 0.001

use_exhaustive_search: false

n_per_dim: 5

optimise_many_warps: false


 

///////////////////////////////////////////////////////////

// NON-RIGID STAGE 

pairwise_stage: {

warper: bilin_grid { ni: 4 nj: 4 nk: 4 }

warp_penalty_fn: zero { }

region_picker: all { }

levels: 2 2

optimisation_method: downhill_search

param_tol: 0.001

use_exhaustive_search: false

n_per_dim: 5

optimise_many_warps: false

n_opt_its: 10


 

pairwise_stage: {

warper: bilin_grid { ni: 5 nj: 5 nk: 5 }

warp_penalty_fn: zero { }

region_picker: all { }

levels: 1 1

optimisation_method: downhill_search

param_tol: 0.001

use_exhaustive_search: false

n_per_dim: 5

optimise_many_warps: false

n_opt_its: 10

}


next up previous
Next: About this document ... Up: Setting Files Previous: Knot-Points
2004-11-25