What is this feature?

• Symbol verification is an additional manned workflow step helping users to handle symbol detection results that may be considered ambiguous or misdetected
• Improved detection marks questionable symbols placing them to a separate ‘To verify’ group
• Users should decide themselves what to do with these questionable results

How Do Symbols Get into Verification Group

• If two symbols detected by different templates are close to each other and their bounding boxes overlap by more than 90%

• Example of detection of two separate symbols by two templates:

  • Overlapping is around 30%
  • They will be placed to groups according to their templates (as they would do before this update)

  

• Example of detection of two overlapping symbol results:

  • Two templates were set up here, one like the left symbol and another like the right
  • It is seen that the left symbol pattern includes the right one, so this symbol was picked up twice and without the feature it would be placed in both detection groups
  • New algorithm places both symbol results to a new group called ‘To verify’ because their bounding boxes overlap by a value close to 100%

  

Example of misdetection

• Setup: the following symbol template:

  

• Result:

  

• As you can see here, symbols include EW3 as well because they are too close to EW2

• This will serve us as a good example of how to apply new feature in order to enhance symbol takeoffs

How to use the feature

[TO DO ]