Degree Of Match For Shape And Size; Distance And Angle Measurement - Sharp IV-S20 User Manual

Overview

[2] Degree of match for shape and size

Pur-
pose
1
Appli-
cation
Exam-
ple
Detailed
instruc-
tion

[3] Distance and angle measurement

Pur-
pose
Appli-
cation
Exam-
ple
Detailed
instruc-
tion
Compare a good criterion image to an objective image by inspecting matching levels
using the garay scale seach function. (Determine whether the port is acceptable or NG by
checking similarities between the criterion image and the workpiece image.)
A matching level comparison using binary images is also possible.
Detect positional deviation of labels , detect contamination of different parts, inspect the mounting
of electronic parts on PC boards, detect mis-print, inspect for missing electric parts such as
terminals, and simple letter inspection.
[Detecting label deviations on packages]
Criterion image
for positioning
SERIAL NO.
8F053G26
MODEL
IV - S20
Criterion image
for measuring object
Good label
Inspection procedure
1 Conduct a gray scale search of the criterion image position
2 Correct the position of the object being measured from the coordinates for the
criterion image obtained in item 1 above.
3 If the matching level of the object image is low, the IV-S20 can determine that the
label position is NG.
Operating instruction example _ See "3-3 Degree of match inspection for shape and size"
Setting measurement program _ See "9-4 Degree of match inspection for shape and size"
Measure the distance and angle of two point using the center detection function in a gray
scale search and the edge detection function, as well as center of gravity detection by
Measurement of mounted electronic parts
[Measuring IC packages]
Search area
(criterion image a)
Criterion image b
Register criterion image a and b by matching edges of the IC package.
Measurement procedure
1 Find the center points of criterion images a and b using a two point gray scale search.
2 Determine the distance between the two center points.
Operating instruction example _ See "3-4 Distance measurement"
Setting measurement program _ See "9-5 Distance and angle measurement"
Search area
for positioning
Criterion image
for positioning
Criterion image
for measuring object
NG label
Criterion image a
Search area
(criterion image b)
1-4
Search area
for positioning