0

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

1

0.9

Not on outline

Not on edge

Not on outline

Scan Edge Position

removes noise to detect edges

Detected edge

12

High-speed, high-precision positioning

Shape Search III is robust against shape variations

High-precision and robust positioning is possible even under the

adverse conditions, such as changes in environments and materials.

*1. The value measured under our specified conditions is provided for reference. *2. The value measured under our specified conditions is provided for reference. 20.4 Mpix camera.

A 20.4 Mpix camera can search a positioning mark

in as fast as 12 ms*2, and a 5 Mpix camera, widely

used for alignment applications, in as fast as 2 ms.

The new algorithm accurately detects a whole circle from

a part of the circle.

Detected outline

Measurement region

Conventional

algorithm

New algorithm

The circle is not

on the outline of

the object.

The outline

of the object

is detected

accurately

New algorithm

The outline

of the object

is detected

accurately

Conventional

algorithm

The circle is not on

the outline of the

object.

Measured

value errors

1/15 *1

Fastest

12 ms*2

Shape Search III

(High speed alignment mode)

Previous Search

Shape Search III

Previous Search

Error (pixels)

10

15

20

25

30

0

5

20.4 Mpix

5 Mpix

0.3 Mpix

Clear

Focal shift

Contrast

Chip

Hidden

Overlapping

Thinning

and thickening

Circular Scan Edge Position

accurately estimates the center

and radius of a circle

20.4 Mpix

5 Mpix

0.3 Mpix

Processing time [ms]

This algorithm accurately estimates lines even when

the edges are unclear due to variations in objects or

disturbance.