Create Reference Elements
After entering the "Comparison Objects" feature, you can create one or more reference elements based on the contour features of the workpiece, and overlay them on the live image area.
Once created, reference elements appear both in the comparison objects list and in the image area, ready for further adjustment and workpiece comparison.
In the comparison objects window, select the type of reference element you want to create, then click "Add".
Easson2D generates the corresponding reference element in the image area and automatically sets the newly created element as the current selection.
If you need to build multiple reference outlines, you can continue to select other types and add them repeatedly.
For example, when a workpiece contains both a rectangular outer profile and a circular hole, you can add separately:
- One rectangle
- One circle
Then adjust their dimensions and angles separately to compose the desired reference outline.
Supported Reference Elements
The following reference elements can be created:
Crosshair
Creates two mutually perpendicular reference directions.
Useful for observing:
- Center position
- Horizontal and vertical orientation
- Whether the workpiece is rotated or shifted
Circle
Creates a circular reference outline.
Useful for:
- Hole diameter comparison
- Outer circle comparison
- Circular part profile inspection
After creation, an accurate diameter can be specified.
Rectangle
Creates a rectangular reference outline.
Useful for:
- Rectangular or square workpiece outlines
- Length and width profile comparison
- Rectangular features with rotation angles
The length, width, and rotation angle can be set separately.
Arc
Creates a partial arc reference outline.
Useful for inspecting:
- Fillets
- Partial curved surfaces
- Incomplete circular profiles
The diameter and start/end angles can be further specified.
Angle
Creates two reference lines with a specified angle between them.
Useful for:
- Inclined edge direction checks
- Workpiece angle comparison
- V-shaped or angular profile inspection
The direction of the two reference lines can be adjusted, or the angle can be set directly.
Grid Crosshair
A grid crosshair consists of reference lines in multiple directions, allowing for more intuitive observation of the workpiece center and orientation.
The angle of the grid crosshair can be adjusted as needed.
Double Circle
Creates two circular reference outlines at the same time.
Useful for:
- Inner and outer diameter comparison
- Ring-shaped workpieces
- Setting two circular reference boundaries
The diameters of the two circles can be set and adjusted separately.
Managing Reference Elements
After creating multiple reference elements, you can manage them through the comparison objects list.
Each reference element appears as a separate item in the list.
Show or Hide
Click the checkbox in front of an element to control whether that reference element is displayed in the image area.
When there are many reference elements, you can temporarily hide outlines that are not currently needed to keep the image area clearer.
Show All
Click "All" to display all currently created reference elements at once.
Hide All
Click "None" to hide all reference elements at once.
Hiding a reference element does not delete its settings; it can be shown again whenever needed.
Deleting Reference Elements
If a reference element is no longer needed, select it in the list and click "Delete".
Once deleted, the element is removed from both the comparison objects list and the image area.
Combining Multiple Elements
A comparison project is not limited to a single reference element.
You can combine different reference elements to build a more complete reference outline based on the actual structure of the workpiece.
For example:
Rectangle + Circle
Used to inspect the workpiece outline and hole position at the same time.
Circle + Crosshair
Used to observe the circular profile and center orientation simultaneously.
Double Circle + Angle
Used to establish both inner and outer circular boundaries as well as a directional reference at the same time.
After creating reference elements, the next step is to further adjust their dimensions, angles, and positions in the image area to match the reference outline with the actual inspection requirements.