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Selecting data in raster images

Selecting data in raster images

Selection of data in raster images

   This functionality is available only in the Raster module.

To edit the content of monochrome raster images, apply the raster selection. Using various types of selection, you can select on raster images:

·         raster objects – raster lines, arcs and circles;

·         areal fragments of a raster image;

·         rasterlinessegments – fragments of raster lines of any shape limited by points of intersection with other raster lines or endpoints;

·         isolated raster fragments – multiple interconnected raster points.

The order of raster selection

·         set the selection mode: add data to selection, remove from selection, single selection;

·         run one of the selection methods: specifying, within the rectangle, clipping polygon, etc. The selection method is assigned based on the type of raster data being selected;

·         carry out the procedure for pointing on the image in accordance with the running method.

BKM_SelectMode

Quantitative raster selection modes

MouseOK    Ribbon: Raster Raster Selection – Basic methods > …

MouseOK    Menu: RasterRaster Select > …

Button

Mode

Action

Single

Each new selection cancels the previous selection

Remove

The selected data are excluded from the existing selection.

Add

New raster data are added to the selection set.

Select All

The content of all raster images is selected.

UnSelect All

All data are unselected.

BKM_SelectMethod_Base

Basic selection modes

MouseOK    Ribbon: Raster Raster Selection > …

MouseOK    Menu: RasterRaster Selection > …

Button

Method name

Specifying procedure

Selected raster data

Select Auto

Specify the object.

Raster object.

Select by rectangle (rectangular area)

Specify opposite corners of rectangular area.

All raster data inside the rectangular area. The selection border runs exactly along the edge of the rectangular selection box.

Select by polygon (polygonal area)

Specify points that determine the boundary of a polygonal area that completely covers the selected data. Press ENTER.

All raster data are polygon-bound. The selection border runs exactly along the edge of the polygonal selection box.

Select Raster Line

Specify two points - the ends of the reference line.

Raster line below the reference line

Select Raster Arc

Set three points - start, arbitrary midpoint, and end point of the reference arc.

Raster arc below the reference arc.

Select Raster Circle

Specify two points - the ends of the reference circle diameter.

Raster circle below the reference circle.

Select Raster Flood Fill

Specify any point on a raster object

Parts of an image whose raster points touch each other.

This is useful for selecting isolated raster objects.

 

Object raster selection methods

The trace selection of raster data is based on the principle of recognition of individual raster objects: raster lines, arcs and circles in the selected area or on its border.

Inside window

Specify opposite corners of the rectangular area.

Objects that are completely within the rectangle. Raster objects crossed by the rectangle border are not selected.

Inside polygon

Specify points that determine the boundary of the polygonal area. Press ENTER.

Objects that are completely inside the polygon. Raster objects crossed by the polygon border are not selected.

Cross window

Specify opposite corners of the rectangular area.

Objects that are inside the region, as well as all raster objects crossed by the rectangle border.

Cross polygon

Specify points that determine the boundary of the polygonal area. Press ENTER.

Objects that are inside the polygon, as well as all raster objects crossed by the polygon boundary.

Fence

Specify a set of points – polyline vertices. Press ENTER.

Raster objects crossed by the specified line.

 

BKM_SelectMethod_Trace

Trace selection methods.

Trace selection of raster data is based on the principle of recognizing raster line segments in a given area or before crossing with other segments.

Button

Method name

Specifying procedure

Selected raster data

Inside window (trace)

Specify opposite corners of the rectangular area.

Objects that are completely within the area before crossing with other segments. Raster objects crossed by the rectangle border are not selected.

Inside polygon (trace)

Specify points that determine the boundary of the polygonal area. Press ENTER.

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