Version history¶

Version 2.1.0 (6 August 2026)¶

Daniel Sage

New feature: Directionality, the second deviatoric invariant J2 = (λ1-λ2)²/4 of the structure tensor
New feature: Anisotropy FA, the fractional anisotropy FA = |λ1-λ2| / √(λ1²+λ2²), bounded in [0..1]
Directionality and Anisotropy FA are available in the Analysis plugin only
New scaling option for Energy and Directionality: "Scale [0..1]" (default) or "No scale" (raw values), selectable in the dialog and scriptable in macros (scale-energy, scale-directionality)
Color survey channels are clamped to [0,1] to avoid overflow with unscaled channels
Fixed the macro recorder that did not record the Directionality view

Daniel Sage

Fixed swapped Gradient-X / Gradient-Y channels in the color survey
Fixed the Distribution histogram window opening when only Binary Mask or Orientation Mask was selected
Fixed the macro keys of the two mask views, now binary_mask and orientation_mask. The keys were derived from the display labels, and ImageJ truncates a macro key at its first space: "binary mask" was read as "binary" and never matched, so both views were unreachable from a macro, while "orientation mask" collapsed onto "orientation" and switched on the tensor orientation and the distribution mask together

Daniel Sage

Fixed a bug in the computation of the mean of cells for the vector field. The overlay line was also not at the right position (shifted by size/2)

Daniel Sage

Daniel Sage

Make the orientation in degrees [-90,90] in the table VectorField, like in the other plugins

Daniel Sage