Smart Gui - Algorithm Training Material_rev1.pdf - 第219页

Copyright © ViT rox All Rights Reserved . 219 T erminal Reference ● Using 2D (Grayscale) and 3D(Height) ● OR Relation between 2D and 3D as pass criteria for single pixel ● Pass Criteria for single pixel: a. Measured Gray…

U-type Algorithm - 3D Multijoint (Base Reference)

218

Base Reference

a. Joint Size & Joint Offset

● To adjust the sizes and the offset for joint inspection boxes

b. Joint Image Plane

● These are the types of 2D Lighting. Select the one with having highest

contrast among interested inspection region and the background.

● Usually choose angle 2+3

c. Joint Grey Thres

● Usually set to 160

d. Joint Height Thres

e. Joint Coverage Thres(%)

● To set the percentage to pass the joint inspection.

Grey Thres

Measured Grey Thres

PASS FAIL

Height Thres (um)

Measured Height (um)

Fail Pass

Pass Criteria for single pixel:

a. Measured Grayscale < Joint Grey Thres

b. Solder Height (%) > Joint Height Thres (%).

The overall pass criteria depends on:

Joint Coverage (%) > Joint Coverage Thres (%)

where,

219

Terminal Reference

● Using 2D (Grayscale) and 3D(Height)

● OR Relation between 2D and 3D as pass criteria for single pixel

● Pass Criteria for single pixel:

a. Measured Grayscale < Joint Grey Thres

b. Solder Height (%) > Joint Height Thres (%).

● The overall pass criteria depends on:

Joint Coverage (%) > Joint Coverage Thres (%)

where,

U-type Algorithm - 3D Multijoint (Terminal Reference)

U-type Algorithm - 3D Multijoint (Solder Profile Inspection)

220

Solder Profile