Interactive assistants#

Assistants open a Matplotlib window so you can pick points, boxes, rotations or labels by clicking, and hand the result straight to a correction or an analysis. They are the interactive counterpart to hand-writing pixel coordinates into a config. All derive from BaseAssistant.

Geometry#

`PointSelectionAssistant`	click a set of points
`BoxSelectionAssistant`,	drag one or more rectangles; used to collect
`RectangleSelectionAssistant`	colour-calibration sample windows
`SubregionAssistant`,	pick a region of interest, get a ready-to-paste
`CropAssistant`	`[roi]` block or a crop config
`RotationCorrectionAssistant`	pick two points defining “horizontal”

Labels#

LabelsAssistant is a small menu-driven editor for a segmentation label field: LabelsPickAssistant, LabelsMergeAssistant, LabelsSegmentAssistant, LabelsMaskSelectionAssistant, MonochromaticAssistant.

import darsia

samples = darsia.BoxSelectionAssistant(image)()   # returns a list of slices

These require an interactive Matplotlib backend, so they are used from scripts and the GUI, not during an unattended docs or CI build.

See also#

The graphical interface – the GUI wraps the same picks as forms
Assistants