2OM-1011-002.pdf - 第46页

RECOG ALGO Set a P .C.B. recognition algorithm. “P A TTERN” “EDGE” • In normal cases, set “P A TTERN” in the data box. [P A TTERN MA TCHING] Set “P A TTERN” when there is enough difference in contrast between a fiducial …

MARK IMAGE

Select one of the following options for a fiducial mark image

(mark pattern) taken by the camera.

“BRIGHT”

“DARK”

BRIGHT : Bright Fiducial/Dark Background

DARK : Dark Fiducial/Bright Background

• Select either mode according to the difference in contrast

between the fiducial and its surroundings.

• Select better mode to get a clear fiducial image.

Note: Wrong mode selection causes malfunction of fiducial

mark recognition.

MARK LEVEL

Select one of the following options as a level to detect a fidu-

cial mark shape.

“HIGH”

“MIDDLE”

“LOW”

HIGH : Both identity and similarity between the shape

of a fiducial mark and the real image are de-

tected on a high level.

MIDDLE : Either identity or similarity between the shape

of a fiducial mark and the real image is de-

tected on a high level.

LOW : Both identity and similarity between the shape

of a fiducial mark and the real image are de-

tected on a low level.

Identity:

Identity between the shape of the specified mark and the real

image (including the size)

Similarity:

Similarity between the shape of the specified mark and the

real image

2.3 OPERATION DATA Display

0305-001 2-26 Tg0858-PM-PM

Fig. 2B61

Fig. 2B62

RECOG ALGO

Set a P.C.B. recognition algorithm.

“PATTERN”

“EDGE”

•

In normal cases, set “PATTERN” in the data box.

[PATTERN MATCHING]

Set “PATTERN” when there is enough difference in contrast

between a fiducial mark and a P.C.B. (Recognition by Pattern

Matching Method)

2.3 OPERATION DATA Display

Fig. 2B64

[EDGE DETECTION]

Set “EDGE” when there is not much difference in contrast

between a fiducial mark and a P.C.B. and the shadow of the

fiducial mark is cast around the mark. (Correction by Mark

Edge Detection Method)

Fig. 2B65

0305-001 2-27

Tg0858-PM-PM

Fig. 2B63

2.3.4 P.E.C. Fiducial Marks

(1) Type and Size

Table 2B2

2.3 OPERATION DATA Display

0305-001 2-28 Tg0858-PM-PM