Filtering in GUI

This example compares several GUI filtering configurations based on the IBSI II phantom and shows how the corresponding filter setup looks in Z-Rad.

Filtering results

Filtering results on the IBSI II phantom: unfiltered, 3D mean, 3D LoG, and 3D wavelet responses.

The archive example compares:

• no filtering

• a 3D mean filter with reflect padding and support 5

• a 3D LoG filter with reflect padding, 1.5 mm scale, and 4 sigma cutoff

• a 3D Daubechies 3 wavelet filter with first-level LLH response and pseudo-rotational invariance

Mean filter example

Example configuration for a 3D mean filter.

LoG filter example

Example configuration for a 3D Laplacian-of-Gaussian filter.

Wavelet filter example

Example configuration for a 3D Daubechies 3 wavelet filter.

Additional filter controls

The filter selector also provides Riesz-transformed LoG and Simoncelli. Riesz-transformed LoG exposes the LoG scale and cutoff, a Riesz multi-index, and an optional structure-tensor scale. Simoncelli exposes the decomposition level and an optional Riesz multi-index; its padding choices are nearest and wrap.

See also GUI filtering for the full filtering guide.