Measurements Table

 

Tool/Menu

Measures

 

Manual Measurements
included in the Tools Toolbar

Straight Line

Length, Control Points coordinates

 

Angle

Angle, Length,  Control Points coordinates

 

Polygon

Perimeter, Area,  Control Points coordinates

 

Rectangle

Perimeter, Area,  Control Points coordinates

 

Ellipse

Perimeter, Area

 

Manual Tag and Counter

Control Point coordinates

 

Semi Manual Measurements

Automatic Area (also in the Tools Toolbar)

Area, Control Point coordinates

 

Find Objects

Objects Area, Number and Statistics

 

Automatic Measurements

Statistics

Statistics can be calculated from:

 

 

Statistics

 

 

 

The Rectangle and Ellipse tools place a 10x10 pixels size rectangular or elliptical shape on the image (that size may be modified at Preferences tab). To move or resize the measurement click the shape control points. If the SHIFT key is pressed while resizing the shape it will have exactly the same width and height, so it will become a perfect square or a circle.

To write the measurement right click and select Write measurement, or choose Unselect (Cancel) if you want to cancel it.

Configuring predetermined options

Some tools can be work in different ways depending on its settings. To define how tools work right click on the tool you want to configure, or just select the Edit > Preferences menu command to open the  Preferences window.

The following table describes how each tool work.

Options: CF: Uses the Conversion Factor.
H: Supports Histogram. CO: Supports copying.

Tool
Options
Description
Angle Measurement Tool

 

The Angle tool allows you to determine the angle defined by three points within the digital image.
Angles are drawn by clicking on three points: on one point subtending the angle, the vertex and the second point on the rays subtending the angle to be measured. Place the cursor over the initial point (1), click, point to the angle center (2) and click other time, point to the final point (3), and click again.

To write the measurement right click and choose Write measurement.

If End segment and angle measurement automatically is set ON in Preferences window, the measurement will be written automatically as soon you click for a third time.

Line Measurement Tool

CF

The Line tool allows you to determine the distance defined between two points within the image.
To draw a single-segment line, click at one end of the line, point to the other end and click again.

To write the measurement right click and choose Write measurement.
If
End segment and angle measurement automatically is set ON in Preferences window, the measurement will be written automatically as soon you click for a second time.

Manual Tags and Counter Tool

 

The Manual Tag and Counter Tool allows counting manually objects within an image. Each time you click on an image point, it is tagged using a colored pixel and the total counting is incremented by one.  Each tag is stored in the Measurements Pane and numbered accordingly to the counting. To change the actual counting right-click .

Manual area/perimeter measurement

 

Polygonal Area/Perimeter Measurement
Tool

 CF,
H
, CO

Click on the first point, and continue moving and clicking until you have marked all segments. To measure a polygonal area click on the first point at the end of the measurement in order to close the polygon.
To write the measurement right click.

Rectangular Area Measurement Tool

 CF,
H
, CO

Drag on the image to select a rectangular area.

You may adjust the boundaries and position of a rectangular selection while it is active. To adjust a boundary, place the cursor along the edge or corner of the rectangle selection and drag it when the 2-way cursor appears. To move the rectangle selection, place your cursor in the middle of the rectangle and drag it when the 4-way cursor appears.

To write the measurement right click and choose Write measurement.
The Rectangular Area Measurement Tool supports generating an Histogram on the selected area.

Elliptical Area Measurement Tool

 CF,
H
, CO

Drag on the image to select an elliptical area. The selecting is drawn from the center. To move the selection, place your cursor in the middle of the rectangle and drag it when the 4-way cursor appears.

To write the measurement right click and choose Write measurement or Write measurement and extended information.

The Elliptical Area Measurement Tool supports generating an Histogram on the selected area.

Automatic selection area measurement
  Automatic Area Measurement Tool

SS

Makes automatic selections of pixel areas with similar color.

Click the color you want to select. A mask will mark the selection.

To modify the selection scope and modify other related settings,  open the Selection Settings palette.

The following buttons are not measurement tools but perform other useful functions:

Measurement Selection Tool

Use the Measurement Selection Tool to edit measurements previously done with the , , , or tools.
To select a measurement click on any of its lines, after the measurement is selected its lines can moved or stretched.

To write the measurement (replacing the previous measurement by the modified one) right click and choose Write measurement. To cancel all modifications and keep the previous measurement, right click and choose Unselect (Cancel).

Note: To modify a measurement done by the tool you should select it in the Measurements Pane.

Color Picker Tool

 

Use the Picker Tool to set the foreground color.
Click the color you want to pick.
Freehand Pencil Tool
Use the Freehand Pencil Tool to paint over the image.
Hand Grabbing Tool

Scrolls an image in any direction when the whole image is bigger than the image window.

Foreground/Background Color

Click on the Foreground (left box) or Background (right box) boxes to open the color window to select a new color.

The Foreground color determines the color used to draw the new measurements, although after a measurement is done, its color can be modified at the Measurements Pane.