Master- / Slave-Interaction
With master/slave interaction, the evoVIU opens up additional possibilities for flexible image acquisition and processing. The goal is to efficiently integrate images from different sources – master and slave – into the workflow and optimally utilize them depending on the application scenario.
Several approaches are available:
Sequential capture of master and slave images: This involves capturing the images one after the other and feeding them into the workflow.
Master/slave select: This technique determines which source an image originates from and which will be processed.
Parallel image capture with combined processing: The master and slave cameras capture images simultaneously, which can then be evaluated together.
These different approaches make it possible to adapt image data to the respective application – be it for comparisons, for synchronous analysis or for optimized process control.
Scenario 1 - Sequential tapping of the master images
With sequential capture, images are captured one after the other by the master and slave cameras. This approach is particularly suitable when multiple images are required at different times—for example, when a system is down or over a longer period of time.
A typical example is the inspection of a vehicle's underbody. A single trigger initiates the workflow. Images are then captured from different positions in several steps. This creates a complete image series that can be processed within the workflow and combined for detailed analysis.
Scenario 2 - Master/Slave-Select
With master/slave select, the workflow dynamically decides which camera to source an image from. This is particularly useful when different image sources are required depending on the situation—for example, depending on an external signal or certain process parameters.
A Select node is used in the workflow for this purpose, which determines whether the recording should be made from the master or slave camera based on input parameters. This allows for flexible control of which source is currently active without the need for multiple fixed processes.
Scenario 3 - Synchronized image capture
In this scenario, the master and slave cameras capture images simultaneously, which are then evaluated together in the workflow. This approach is particularly suitable for applications that require synchronized images from different angles – for example, for 3D analysis or for comparisons between the front and back of an object.
Parallel image acquisition ensures that both images capture the same moment and can be processed without a time delay. This allows for precise capture of features and combined evaluations that would be impossible with individual sequences.