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Left control bar consists of stack of buttons, which are functionally splitted for four groups; Forms, Modes, I/O, and Satus, which content and functionality is explained in this section.

Forms

Forms are represented by geometry objects Rectangle, Circle, Polygon, Wedge, and Line, which can be used as non-selected - "positive" for ROI, and selected - "inversed" for blemish maskto compose the mask regions. All forms behave about the same way depending on Mode, as explained below.

Modes

Section of modes contain Zoom, Add, Move, Select, and Remove buttons with functionality literally explained by their names.

Mode Zoom

Mode Zoom works for image and spectrum.

Mode Add

Add is an input method for forms. All forms, except Polygon, are presented by two 2D points each on image coordinate system. Input method for these forms is the same; in mode Add click-drug-release the left mouse button. Two points will be defined for click and relese positions of the mouse.
Polygon is presented by the N 2D points, where N is a number of vertexes.
The N-1 points are entered by the left mouse button click, while the N-th point is indicated by the right mouse button click.

Mode Move

Mode Select

Forms can be used as non-selected - "positive" for ROI, and selected - "inversed" for blemish mask.

Mode Remove

I/O

Masks

Masks can be saved as

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