Programming_mail.pdf - 第151页

III- 77 Programming Manual Part III Inspection Algorithm 1.23.3 Setting Procedur e Step1: Select a lighting that shows the difference between OK image and NG image from the Lighting drop-down list. Step2: Adjust the size…

III-76

Programming Manual

Part III Inspection Algorithm

1.23 OKNGImages

1.23.1 Inspection Overview

OKNGImages is the algorithm to inspect for pattern matching inspection.

This algorithm determines either of OK or NG image is closer to the detected image.

This algorithm is suitable for missing inspection which is difﬁ cult to be detected by brightness level or

inspections which false calls frequently occur. OKNGImages can be used in fare-paying software.

1.23.2 Parameter Setting

Figure 1-92 OKNGImages

Parameter Description

Lighting

Select a lighting which shows difference between the OK image and NG image.

Algorithm

Select OKNGImages.

Angle

Search Range No need for setting. Search Range shown in Table 1-36 is displayed.

Shift[V1-V8]

Enter the appropriate vector. Any value from V1 to V8 is available.

Select the vector according to the Memorize to ﬁ eld of the Adjust window.

Memorize to

Upper, Lower Set upper and lower limit of the OK range.

Sample

Shows the match percentage. The match percentage of NG image is displayed as a negative value.

Table 1-35 Parameter of OKNGImages

Item Description

Reg mode

To register a template image, press Reg mode.

View

To display the highest match percentage template image, check Matching image.

To display a detected image, check Detected image. A pink window is an inspection window.

Search Range

Set a search range for images. Display the search range as the orange dotted line.

Enter the search range or press + and - to adjust the search range.

Table 1-36 Each Item of OKNGImages

III-77

Programming Manual

Part III Inspection Algorithm

1.23.3 Setting Procedure

Step1: Select a lighting that shows the difference between OK image and NG image from the

Lighting drop-down list.

Step2: Adjust the size of the inspection window to surround the target component.

Step3: Register the template image. Press Reg mode. The image shown in Figure 1-93 appears.

Press Reg OK to register OK image. Press Reg NG to register NG image.

CAUTION

Ten template images to each OK and NG can be registered.

Figure 1-93 Reg mode

Step4: Press Reg mode. The inspection is operated. Display the highest match percentage OK

template image and NG template image.

NOTE

Display the match percentage in the upper side of OK image and NG image. The

higher value Larger match percentage is shown as sample value. The match

percentage of NG image is displayed as a negative value.

Figure 1-94 Inspect

III-78

Programming Manual

Part III Inspection Algorithm

Step5: Enter values in Upper ﬁ eld and Lower ﬁ eld.

NOTE

Standard values are 80 (Upper) and 0 (Lower).

NOTE

OKNGImages can register different images for OK and NG images and judge an

image is OK according to the setting. To set the algorithm to judge an image is OK

if the matching rate with the OK image is high, set Upper to around 100 and Lower

to around 70. To set the algorithm to judge an image is OK if the matching rate with

NG image is high, set Upper to around -70 and Lower to around -100.

Step6: Enter the appropriate vector into the Shift ﬁ eld. Any value from V1 to V8 is available.

Select the vector according to the Memorize to ﬁ eld of the Adjust window.

Step7: Press Inspect. Make sure that the inspection is completed properly.