This step in the Image Analysis Wizard enables you to specify which of the detected objects are measured, based on various properties such as area, intensity, or roundness.

All the objects detected with the current settings are highlighted in the image.

You can manually add or remove objects that are difficult to detect in the next step.

  1. If you wish this step to be included when the job is run, activate Execute.
  2. Otherwise the step is skipped.
  3. If you wish a user to be able to adjust the settings in this step when the job is run, activate Interactive.
  4. Select the class for which you wish to modify the settings.
  5. You can specify different settings for each class.
  6. Click Edit.
  7. Double-click the properties you wish to use to select detected objects.
  8. The selected properties are added to a so-called block. The properties are joined by "And" conditions: only detected objects which fulfill all the properties in a block are measured; all the other detected objects are excluded.
  9. You can filter the list by entering the first few letters of the property name in Search Feature or by selecting the corresponding category of property in the drop-down.
  10. For more information about the properties and their values, see Feature Selection Dialog.
  11. To create an alternative block, click Add Block.
  12. The blocks are joined by an "Or" condition. Objects that fulfill all the conditions in at least one block are measured.
  13. Double-click the properties to add to the new block.
  14. Repeat steps 5-7 as desired.
  15. When you have selected all the desired properties, click OK.
  16. For each property, click a representative object in the image.
  17. The threshold values for the property are set based on the values of the selected object.
  18. If desired, correct the lower and upper threshold values in Minimum and Maximum respectively.
  19. If the object's property is not between the thresholds, it is excluded.
  20. If you do not want to include a threshold for a property, deactivate the corresponding checkbox. In this case, the threshold is set to the minimum or maximum possible value respectively.
  21. Click Next.

For detailed information about each parameter, see Region Filter.