TR7500_Series_Software_v29_En.pdf - 第247页

Test Research Inc. TR7500 Series User Guide – Software v.2.9.0 225 (8) Add images of lead and solder inspection windows. All inspection windows with the same method wi ll use t he image. (9) Click on [Pass Level] to set …

Test Research Inc.

224 TR7500 Series User Guide –Software v.2.9.0

Figure 374: Choose [Rotate Copy] or [Mirror]

Figure 375: Results of [Mirror} Command

Test Research Inc.

TR7500 Series User Guide –Software v.2.9.0 225

(8) Add images of lead and solder inspection windows. All inspection windows with the

same method will use the image.

(9) Click on

[Pass Level] to set pass level for all types.

Figure 376: Example: Set Pass Level

(10) Click on [Save] to save this type. The system will store the saved file in

[C:\AOI\packagelibrary] folder

Test Research Inc.

226 TR7500 Series User Guide –Software v.2.9.0

9 I

MAGE

ATCHING

RINCIPLES AND

ASS

EVEL

ETTINGS

9.1 Methods of Image Matching

9.1.1 Method 1–Geometric Feature Matching

The system saves the pattern and features of the image and inspects the image according to

the features. [Missing] is inspected using this algorithm. Also, this algorithm can be selected

to do image matching for [Warp].

9.1.2 Method 2–Normalize Correlation Matching

System learns the gray level(s) and feature(s) of the image, then finds the best matching

object in the search range when inspecting. [Lead] is inspected with this algorithm and this

algorithm can be selected to do image matching for [Warp].

9.1.3 Method 3–Projection Profile Matching

After projecting the gray level to the X and Y axis, the system takes the projections as the

features to inspect. [Align] is inspected with this algorithm.

9.2 Principles and Settings

9.2.1 Model Image (Missing/Missing Polarity)

To check the missing, shift, tombstone and polarity of components. Use the Geometric

Feature Method (Method 1). Grab a good image model for sample. Compare with test

component to find the defect.

Figure 377: Model Image (Missing) Window

The [Pass Level Settings] are shown in the following figure.