Table 1 The direction of the template
From: Application of machine vision technology in geometric dimension measurement of small parts
Direction template | A1 | A2 | A3 | A4 |
|---|---|---|---|---|
F0 coordinates | (a,b − 1) | (a + 1,b − 1) | (a + 1,b) | (a + 1,b + 1) |
F2 coordinates | (a,b + 1) | (a − 1,b + 1) | (a − 1,b) | (a − 1,b − 1) |
Directional coordinates | A5 | A6 | A7 | A8 |
F0 coordinates | (a,b + 1) | (a − 1,b + 1) | (a − 1,b) | (a − 1,b − 1) |
F2 coordinates | (a,b − 1) | (a + 1,b − 1) | (a + 1,b) | (a + 1,b + 1) |