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III- 70 Programming Manual Part III Inspection Algorithm 1.20 Barcode 1.20.1 Inspection Ov er view Barcode is the algorithm to recognize 1D barcode. Register the target barcode. The result will be OK digit number of reco…

III-69

Programming Manual

Part III Inspection Algorithm

1.19.3 Setting Procedure

Step1: Select a lighting that displays the characters visually clear from the Lighting drop-down list.

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

Step3: Press Set in the right side of Algorithm. The dialog shown in Figure 1-84 appears.

Figure 1-84 Setting Dialog of New_OCR

Step4: Adjust the character angle by Text Angle if the character is not upright.

Step5: Adjust the luminosity and the noise to recognize a character clearly. Adjust the Bright setting

of Upper Level and Lower Level then press Apply, recognition Result will be displayed in the

right side of OK Value. Adjust the parameter to recognize characters correctly. If the recognized

characters are noisy, reduce the noise with slide-bar in the right side of Noise Erase.

Step6: If the similar characters such as 1 and I or 0 and O are miss-recognized, enter them into

the two text boxes on the right of Similar character and press Add.

In the inspection, the result will be OK if either of the characters is recognized.

To remove the characters from the list, select an item and press Delete.

Step7: If the character is recognized correctly, press <

to copy Result to Reference and then

press OK.

Step8: 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.

NOTE

Enter V4 to apply the misalignment calculated by ImageMatchEx. For details, refer

to Part III 1.17 ImageMatchEx.

Step9: Press Inspect. Make sure that the recognized characters are displayed correctly on the

upper right side of the dialog shown in Figure 1-83.

III-70

Programming Manual

Part III Inspection Algorithm

1.20 Barcode

1.20.1 Inspection Overview

Barcode is the algorithm to recognize 1D barcode. Register the target barcode.

The result will be OK digit number of recognized barcode is in tolerance.

Barcode is suitable for PCBs traceability.

NOTE

Refer to Part III 2.2 Barcode_Pro for 2D barcode inspection.

1.20.2 Parameter Setting

Figure 1-85 Barcode

Parameter Description

Lighting

Select a lighting that displays barcodes visually clear.

Algorithm Select Barcode.

Reduction Enter 4.

Reverse

Enter 0 if the brightness level of the barcode is lower than surrounding brightness.

Enter 1 if it is higher.

Barcode kind -

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.

Version -

Memorize to -

Upper, Lower

Enter the barcode digit number in

Upper

ﬁ eld and Lower ﬁ eld. The sample value is the

digit number of recognized barcode. If the target digit and recognized digit number is the

same, the result will be OK.

Sample

This parameter shows the digit number of the recognized barcode.

Table 1-32 Parameter of Barcode

III-71

Programming Manual

Part III Inspection Algorithm

1.20.3 Setting Procedure

Step1: Select a lighting that displays the barcode visually clear from the Lighting drop-down list.

Step2: Adjust the size of the inspection window to surround the barcode. Leave spaces at both

sides of barcode (make spaces three times wider than the widest blank space in the barcode).

㽲

㽲㬍㪊

Figure 1-86 Inspection Window of Barcode

Step3: Press Set in the right side of Algorithm. The dialog shown in Figure 1-87 appears.

Select the barcode kind and press OK.

NOTE

If BT_Autodetect for one dimension code is checked, the barcode type will be

recognized automatically. However, the inspection time will become longer.

Figure 1-87 Barcode kind

Step4: Press Inspect. Make sure that the alphanumeric characters of the barcode are displayed

correctly on the upper right side of the dialog shown in Figure 1-85.