The tool implements a series of optimized contour and ridge detectors. The filters are steerable and are based on the optimization of a Canny-like criterion. They have a better orientation selectivity than the classical gradient or Hessian-based detectors.
This plugin creates a non-destructive grid of lines, crosses or points on the current image or stack. You can specify the grid type (lines, crosses or points), the area per point (in pixels or physical units), and the color.