Smart Gui - Algorithm Training Material_rev1.pdf - 第301页

Copyright © ViT rox All Rights Reserved . Fiducial Editor 301 1. Custom Lighting ● Select the lighting angle that having the best contrast. 2. Shape ● Select the shapes for the fiducial ● The lightning icon shows beside …

Fiducial Editor

300

User can adjust the sizes, greyscale and threshold for the

fiducial accordingly based on the figure above.

Fiducial Editor

301

1. Custom Lighting

● Select the lighting angle that having the best contrast.

2. Shape

● Select the shapes for the fiducial

● The lightning icon shows beside is use to auto train the

fiducial shape & greyscale.

3. LED Setting

● Turn on or off the LED.

● This may affect the contrast of the fiducial.

Steps for Fiducial Setup

1. Ensure correct Fiducial Shape is selected. In this case, Ellipse should be chosen.

2. Normally a fiducial is brighter compared to the PCB/Background.

3. Ensure that appropriate size is set for Search Area which is in yellow colour. Search Area should be big

enough to cover Template and Inner & Outer Radius. Search Area is normally set as a square and should

not cover any bright area/pad of similar size to the actual fiducial.

4. Template should be slightly bigger than the actual fiducial, but smaller than “search Area”. It's in green

colour.

5. View Offset should normally be turned off (set to 0).

6. Inner DC means to exclude the “dirty” area residing inside the inner part of the fiducials. It should only be

applied when the dirty area in the inner part of the fiducial creates a significant impact on the total score

of the “Current Inspection Value”. It should be set smaller than the actual fiducial.

7. Inner Radius should be set slightly smaller than the actual size of the fiducial, on the bright area/pad.

8. Outer Radius should be set slightly bigger than the actual size of the fiducial, on the dark area/PCB. The

difference between Inner Radius and Outer Radius is normally 30-50.

302