Changes

===Defects generation and acquisitionGenerating real defects===Of course, defect detection on assembled PCB's is a matter that is strictly related to the core business of DAVE Embedded Systems. AlsoAs manufacturer of electronic boards, PCB assembling is an industrial process under the full control of the company itself. This For the case under consideration, this was a great help for creating a because it allowed the creation of an initial dataset of defected boardsin a controlled fashion. As detailed in the rest of the section, our DAVE Embedded Systems' assembly line was configured purposely to generate deliberately a relatively high rate of defects in a controlled fashion on a limited numbers of boardsdevoted for this purpose.

For this first attemptSpecifically, 5 panels were prepared, each one containing 4 PCBs of the same type and with same template project i.e. the same bill of materials (BOM) for the [https://www.dave.eu/en/solutions/system-on-modules/diva-som ''DIVA SoM'']. In this case, it was decided to mount components only on ''top'' side of the PCB. Furthermore, in order to reduce complexity and simplify the problem for this test, anomalies generation is restricted to 2 contacts SMD passive components i.e. resistors, capacitors, and inductors. The table below reports all plausible anomalies that can be generated by editing the standard template project containing all the positions of the components for the pick-and-place (P&P) machine, decreasing or increasing the quantity of solder deposited by the screen printer on the panel or that can be generated directly by the operator.