Sharp IV-S20 User manual

R
SCompact image sensor camera
IV-S20
Version 2.3
Produced in July. 2002
User's Manual
Model name
Applied for software version 2.09 (S2.09)

Thank you for purchasing the SHARP IV-S20 compact image sensor camera. Read this user's manual care-
fully to thoroughly familiarize yourself with the functions and proper procedures for operation.
Store this user's manual in a safe place. We are confident that the manual will be helpful whenever you
encounter a problem.
- This user's manual provides you with information about the IV-S20 softwares version 2.09.
All IV-S20 cameras with an S2.09 mark are compatible with software version 2.09. (See
page 5-1.)
- For details about the upgrade version of the software, see Appendix 2.
Important
- This manual was written with the utmost care. However, if you have any questions or inquiries
concerning the product, please feel free to contact our dealers or us.
- Copying all or part of this booklet is prohibited.
- The contents of this manual may be revised or modified for improvement without prior notice.
Notes

Safety Precautions
Read this user's manual and the attached documents carefully before installing, operating, or performing
maintenance and checking, in order to keep the machine working correctly. Make sure you understand all of the
equipment details, safety information, and cautions before using this machine, In this user's manual, the safety
precautions are divided into "Dangers" and "Cautions" as follows.
Danger : Improper handling is likely to lead to death or serious injury.
Caution : Improper handling may lead to injury or damage to equipment.
Even when only a Caution is given, serious results may occur depending on the
circumstances. In all cases, important points are described. Be sure to follow the
advice given.
The following symbols are used to prohibit or explain required action.
: This means do not do what is described. For example, prohibited disassembly is shown as .
: This means an action you must take. For example, a ground connection that must be made is
shown as .
(1) Installation
Caution
- Use only in the environment specified in the catalog, rinstruction manual, and user's manual.
Electric shock, fire or malfunction may result if used in high temperature, high humidity, dusty
or corrosive atmosphere environments, or if excessive vibration or impact occurs.
- Install only as described in the manual.
An improper installation may cause the equipment to fail, breakdown, or malfunction.
- Never leave wire cuttings or any other foreign matter lying about.
A fire, breakdown or malfunction may result from objects left near the equipment.
(2) Wiring Caution
- Do not connect cameras, other than those specified (IV-S20C1/S30C1/S30C2), to the main
housing of the IV-S20. Connecting any other camera may damage the IV-S20 or the camera.
- Connect only to the specified power source.
Connection to the wrong power source may cause a fire.
- Wiring should be performed by a qualified electrician.
Improper wiring may lead to a fire, breakdown or electric shock.
(3) Use
Danger
- Don't touch the terminals while the power is supplied or you may receive an electric shock.
- Assemble an external emergency stop circuit and interlock circuit (outside of the IV-S20 com-
pact image sensor camera). Otherwise a breakdown or damage to the machine may occur due
to a problem with the IV-S20.
Caution
- Take special care to follow all safety guidelines, if you are changing the parameters for the
operating conditions or performing an "enforced output," "run," or "stop" during operation.
Misoperation may damage the machine or cause an accident.
- Turn ON the power supplies in the specified sequence. Turning ON the supplies in the wrong
order may lead to a machine breakdown or cause an accident.

(4) Maintenance
Prohibit
- Don't disassemble or modify the camera.
Fires, breakdowns or malfunctions may occur, if the camera is disassembled.
Caution
- Turn OFF the power source before connecting or disconnecting the IV-S20.
If you don't, electric shocks, malfunctions or breakdowns may occur.

Organization of This Manual
The following chart shows the sequence of the chapters to be read for details about each operation.
Chapter 1. Overview
Chapter 2. Precautions for Use
Chapter 4. System configuration
Chapter 6. Installation Conditions and
Method
Chapter 16. Specifications
(Chapters in this manual)(Operation) (Contents)
Chapter 5. Part Name and Function
Chapter 6. Installation Conditions and
Method
Chapter 2. Precautions for Use
Chapter 7. Setting and Operation Outline
Chapter 11. Setting the Input/Output
Conditions
Chapter 13. Communication (General
Purpose Serial Interface)
Chapter 14. Computer link
Chapter 7. Setting and Operation Outline
Chapter 8. Run Menu Conditions and
Settings
Chapter 9. Setting the Condition of Each
Object Type
Chapter 10. PC functions
Chapter 12. Other Settings and Operation
Chapters 3, 7 to 12, 13, 14, and
Chapter 15. Troubleshooting
Chapter 15. Troubleshooting
- Review the system configuration (sys-
tem equipment, measurement items, in-
stallation requirements, etc.).
- Make connections, assemble, and
wire the system equipment (an IV-
S20, camera, peripheral equipment,
etc.)
- Run the software, and set the input/
output requirements (communication
requirements) with the externally con-
nected equipment.
- Run the software, and set the meas-
urement requirements. (set the meas-
urement/inspection areas, pass/fail
criterie)
- Perform an actual test using the re-
quirements you enterd.
7 Maintenance - Procedures for performing ordinary in-
spections.
- Set as necessary.
1 System
design
2 Installation/
assembly
3 Configuration
4Measurement
condition
settings
5 Miscellaneous
settings
6 Test/
inspection

Chapter 1: Overview
Chapter 2: Precautions for Use
Chapter 3: Operation Examples
Chapter 4: System Configuration
Chapter 5: Part Names and Functions
Chapter 6: Installation Conditions and Method
Chapter 7: Setting and Operating Outlines
Chapter 8: Run Menu Conditions and Settings
Chapter 9:
Setting the Conditions for Each Object Type
Chapter 10: PC Function
Chapter 11: Setting the Input/Output Conditions
Chapter 12: Other Settings and Operations
Chapter 13: Communication
Chapter 14: Computer Link
Chapter 15: Troubleshooting
Chapter 16: Specifications
Glossary
Appendix and Arphabetical index

Table of contents
Safety PrecautionsSafety Precautions
Organization of this manual
Chapter 1: Overview ............................................................................................. 1-1 to 7
1-1 Features 1-1
[1] Features of the CCD camera 1-1
[2] IV-S20 features 1-2
1-2 Measurement program 1-3
[1] Positional deviation/absolute position measurement 1-3
[2] Degree of match for shape and size 1-4
[3] Distance and angle measurement 1-4
[4] Lead inspection 1-5
[5] Area measurement by binary conversion 1-5
[6] Counting quantities by binary conversion 1-6
[7] Object identification (labeling) by binary conversion 1-6
[8] Existence inspection by point measurement 1-7
Chapter 2: Precautions for Use ...................................................................................2-1
Chapter 3 : Operation Examples........................................................................ 3-1 to 49
3-1 Area measurement by binary conversion 3-2
3-2 Position measurement 3-8
3-3 Degree of match inspection for shape and size 3-15
3-4 Distance measurement 3-22
3-5 Lead inspection 3-31
3-6 Existence inspection by point measurement 3-38
3-7 Position correction (example of point measurement) 3-44
3-8 Use of numeric calculations (example of shape and size inspection) 3-45
Chapter 4: System Configuration ....................................................................... 4-1 to 7
4-1 Basic system configuration 4-1
4-2 System configuration examples 4-4
[1] System configuration example for measurement triggered by an external trigger, such as a photo
sensor 4-4
[2] System configuration example for measurement triggered by the internal CCD sensor trigger 4-5
[3] System configuration example for measurement triggered by a command from a personal computer
4-7
Chapter 5: Part Names and Functions ............................................................... 5-1 to 5
5-1 IV-S20 main housing 5-1
5-2 Camera section 5-2
[1] Camera 5-2
[2] Cemera lens (IV-S20L16) 5-4
[3] Camera conversion cable (IV-S20HC3) 5-4
5-3 Remote key pad 5-5
C-1

Chapter 6: Installation Conditions and Method .............................................. 6-1 to 31
6-1 Installation conditions 6-1
[1] Lighting equipment 6-1
[2] Illuminance and shutter speed 6-3
[3] Optimum lens and resolution 6-4
6-2 Connection, installation, and wiring of IV-S20 main housing 6-8
[1] Connection 6-8
[2] Installation 6-10
[3] Connecting a power supply 6-12
[4] Connecting to the input/output terminals (parallel I/F) 6-14
[5] Connection for communications with personal computer (general purpose serial I/F) 6-16
[6] Connecting a programmable controller using the computer link function 6-18
6-3 Connection and installation methods of camera (IV-S20C1, IV-S30C1/C2) 6-19
[1] Connecting and installation to the IV-S20C1 6-19
[2] Installing and connecting the IV-S30C1 6-23
[3] Installing and connectiong the IV-S30C2 6-27
Chapter 7: Setting and Operating Outlines ...................................................... 7-1 to 14
7-1 Setting and operating procedures 7-1
7-2 Screen specifications 7-2
[1] Operation (run) screen 7-2
[2] Menu configuration 7-4
[3] Set condition configuration 7-7
[4] Image display 7-8
7-3 Remote key pad specifications 7-9
7-4 Operation flow 7-10
[1] Processing after power is turned ON and main loop processing 7-10
[2] Operation flow after a measurement start input signal is given 7-12
7-5 When using the IV-S30SP 7-14
Chapter 8: Run Menu Conditions and Settings................................................ 8-1 to 10
[1] Output monitor 8-1
[2] Image capture 8-3
[3] Message display 8-4
[4] Pattern display 8-5
[5] Binary image display 8-6
[6] θ angle correction image display 8-7
[7] Crosshair cursor display 8-8
[8] Manually setting the object type 8-9
[9] Image display 8-10
[10] Main operations menu lock 8-10
C-2

Chapter 9 : Setting the Conditions for Each Object Type ............................. 9-1 to 117
9-1 Outline 9-1
9-2 Shared settings 9-3
[1] Window shape selection and settings 9-3
[2] Image settings 9-6
[3] Evaluation conditions 9-13
[4] Numerical calculations 9-14
[5] Position correction 9-20
[6] Comparative calculations between images 9-24
[7] Copying (editing) 9-28
[8] Editing after initialization 9-31
[9] Title registration 9-33
9-3 Positional deviation and absolute position measurement 9-34
9-4 Degree of match inspection for shape and size 9-45
9-5 Distance and angle measurement 9-57
9-6 Lead inspection 9-72
9-7 Area measurement by binary conversion 9-82
9-8 Counting quantities by binary conversion 9-90
9-9 Object identification (labeling) by binary conversion 9-98
9-10 Existence inspection by point measurement 9-107
9-11 System settings 9-115
[1] Illuminance (light level) monitor 9-115
[2] Shutter speed 9-117
Chapter 10: PC Function .................................................................................. 10-1 to 16
10-1 Operation cycle 10-1
[1] Power ON sequence 10-2
[2] PC scan clycle 10-2
[3] Measurement processing cycle 10-2
10-2 Ladder circuit program creation 10-3
[1] Procedure for creating measurement output condition and a ladder circuit 10-3
[2] Procedure for setting the final output conditions in a ladder circuit 10-8
10-3 Program examples (shape and positional deviation inspection) 10-14
10-4 Examples of a final output conditions ladder circuit 10-15
10-5 PC monitor screen 10-16
Chapter 11: Setting the Input/Output Conditions .......................................... 11-1 to 22
11-1 Outline 11-1
11-2 Measurement start input and result output settings 11-3
11-3 CCD trigger 11-17
11-4 Setting for serial communications 11-18
11-5 Computer link 11-19
11-6 Output block assignment (computer link output and general purpose serial output) 11-20
[1] Data in specified blocks 11-20
[2] Setting (operating) procedure 11-21
11-7 Gain/offset adjustment 11-22
C-3

Chapter 12: Other Settings and Operations ([SYSTEM SETUP] menu) ......... 12-1 to 8
12-1 Settings 12-1
[1] Change the Japanese or English display mode 12-1
[2] Download all parameters 12-2
[3] Total initialization 12-3
[4] Saving to flash memory 12-4
12-2 Maintenance 12-5
[1] Camera position adjustment 12-5
[2] Self-diagnosis 12-8
Chapter 13: Communication (General Purpose Serial Interface) ................. 13-1 to 25
13-1 List of processing functions 13-1
13-2 Data flow 13-3
[1] When the measurement execution processing code is 10, 11, 12 or 13 13-3
[2] When the measurement execution processing code is 18, 19, 1A or 1B 13-3
[3] Processing other than measurement execution processing 13-3
13-3 Communication format 13-4
13-4 Processing functions 13-6
[1] Measurement execution functions 13-6
[2] Result reading 13-9
[3] Setting, initialization, and diagnosis of the operation screen 13-12
13-5 Measurement data blocks 13-15
[1] Number of blocks 13-15
[2] Contents of the measurement result block (for each measurement function) 13-15
Chapter 14: Computer Link .............................................................................. 14-1 to 31
14-1 Compatible models 14-1
14-2 Data flow 14-2
14-3 Register setting 14-3
[1] Number of blocks 14-5
[2] Contents of the measurement result block (for each measurement function) 14-5
14-4 Interface 14-16
[1] Setting items for the IV-S20 14-16
[2] Connection with a Sharp PC 14-17
[3] Connection with a Mitsubishi PC 14-23
[4] Connection with an OMRON PC 14-26
14-5 Program examples 14-28
Chapter 15: Troubleshooting ............................................................................. 15-1 to 5
[1] Symptoms and checks 15-1
[2] Causes of termination codes (when an error occurs) and remedies 15-3
[3] Maintenance 15-5
C-4

Chapter 16: Specifications ................................................................................. 16-1 to 7
16-1 IV-S20 main housing 16-1
[1] Image processing specifications 16-1
[2] PC specifications 16-2
[3] Hardware specifications 16-2
16-2 Camera section 16-3
[1] Camera main body (IV-S20C1) 16-3
[2] Camera (IV-S30C1/C2) 16-4
[3] Camera lens (IV-S20L16) 16-5
[4] Camera conversion cable (IV-S20HC3) 16-5
[5] Camera extension cable (IV-S30EC2/EC4) 16-5
16-3 Peripheral device 16-6
[1] Monochrome monitor IV-09MT specifications 16-6
[2] LED lighting equipment IV-60LD specifications 16-7
Glossary...............................................................................................................G-1 to 11
Appendix................................................................................................................A-1 to 6
Support tool available on the markert A-1
Software version information A-3
Arphabetical index ............................................................................................... I-1 to 14
C-5

1-1
1
Overview
Chapter 1: Overview
The IV-S20 compact image sensor camera is equiped with a CCD image sensor, which captures square
pixels in full range. Employing this state-of-art device, it can be used to pick up high contrast images at high
speed.
It is also easy to interface to a personal computer and a programmable controller, and it can be used in a
variety of production lines such as those for electrical, electronic, semi-conductor or liquid crystal parts as
well as for food, chemical, cosmetics, and other production lines.
1-1 Features
[1] Features of the CCD camera
(1) Arrangement of the square pixels
The vertical and horizontal pixel aspect ratio is 1:1, so there is no need for image correction. This
allows maximum precision and processing speed.
(2) Full pixel reading (progressive scan)
The IV-S20 employs a full pixel reading system which scans every horizontal lines on the CCD in
order. This system does not suffer from reduced image resolution which is caused by the
conventional NTSC interlaced system which only reads half the lines in each frame.
- Comparison of capturing moving objects image
(3) Random shutter
The IV-S20 shutter operation can be triggered by an external signal or by the CCD. It can be used
to mesure moving object.
(4) Reading full and partial images
Since the IV-S20 can be used to capture just the part of the image needed for image processing, it
can read images at very high speeds.
(5) CCD trigger
The IV-S20 samples a part of the CCD (which can be set to any position with according to item ),
and it will starts shutter operation when value of the area being monitored exceeds 50%. With this
function, there is no need for an additional photo sensor or proximaty sensor. Since the IV-S20 can
set the CCD triggering position for each item being processed, it can shorten the time needed to
change the items being processed on a production line.
(6) The C mount module and back plane focus can be adjusted
Since the IV-S20 uses a standerd C mount module for installing the lens, it can be used to adjust the
back plane focus and is convenient for use with a fixed focus lens or for proximaty shots.
Conventional NTSC interlaced systemProgressive scan system
512
480
Full line Image signal
Odd line
Even line
Even line Odd line
1
1.28
CCD pickup with rectangular pixels
1
1Pixel
CCD pickup with square pixels
Full image reading Partial image reading
480 lines
(approx. 33 ms) 120 lines
(approx. 8 ms)
Item 1
Moving direction
Window for triggering
Item 2
Moving direction

1-2
1
Overview
[2] IV-S20 features
(1) Gray scale search using normalization correlation
The IV-S20 processes 256 gray level images using template matching
with normalization correlation. This improves inspection and measure-
ment precision without being affected by variations in lighting.
(2) Sub-pixel level precision
When the IV-S20 looks for the position of an object using gray scale
search function, it can calculate a finer position than the actual CCD
pixel size by interpolation to achieve sub-pixel scale precision.
(3) Simultaneous shutter triggering of two cameras
When a trigger signal is input, two cameras will start
their shutter operation at the same time, and transfer
the captured image signals at the same time. This can
reduce the total processing time for taking simulta-
neous pictures of moving objects.
(4) 8 kinds of integrated measuring programs, including measurement and inspection functions
The IV-S20 integrates the following measurement programs: Positional deviation, absolute position
measurement, matching level inspection, distance and angle measurement, lead inspection, area
measurement by binarization, counting by binarization, labeling measurements by binarization, and
point measurements. The IV-S20 can process any three measurements from 7 programs, plus po-
sitional deviation and absolute position measurements, with one scanned image.
(5) Binarization processing is effective in controlling variations in brightness
Since the binarization process employs a brightness level monitoring function, the threshold value
will follow variations in brightness.
(6) Image pre-processing and binary noise elimination function
In order to process images precisely and reliably, the binarization process uses edge emphasis,
edge extraction, and leveling operations. To eliminate noise, "binary increase _decrease," "de-
crease _increase," and "area filters" are available.
(7) Rotation correction
Rotation correction determines the angle for correction by locating two points with a gray scale
search and edge detection.
(8) Calculation between images
Calculation of difference between images captured by camera 1 and camera 2, and calculation of
differences between a stored standard image and captured images are both possible. Subtraction
and absolute difference in value can be used for calculation.
(9) Integrated PC function
The integrated calculation functions of a programmable controller are included so that the IV-S20
can directly output detection and measurement results after calculation external equipment. This
can greatly reduce the total processing time and produce cost savings when setting up a system.
(10) High speed programless communication
The IV-S20 has a computer link function and general-purpose serial communication function for
communication with external devices. It can have a user settable communication speed up to 115.2
kbps, which contributes to increased processing speed for the whole system.
The computer link function can write the measurement results to an external programmable control-
ler register without any programing.
Using the general-purpose serial communication function, the IV-S20 can execute commands from
a host computer, and return the result to the host computer.
(11) Compact
The IV-S20 can be connected to a maximum of two cameras. It is the smallest image processing
system in the industry with the dark and light processing capabilities (as of August 1998).
(12) Simultaneous display of two screens
The screen can display two images from two cameras alternately, or simultaneously by dividing the
screen into two horizontally. When displaying multiple images, each camera image can be posi-
tioned in the upper, middle, or lower views.
(13) Crosshair cursor display
A crosshair cursor is displayed. This cursor is convenient for manual positioning.
(14) Display language changeable between Japanese and English
Menus and other messages displayed on the screen can be switched between Japanese and En-
glish.
Pixel detection
at sub-pixels
Pixel
Camera image Image search with
conventional system
Detection point Detection point
480 pixels
(vertical) 512 pixels
(horizontal)
256 gray levels

1-3
1
Overview
1-2 Measurement program
The IV-S20 integrates the following eight measurement programs: Positional deviation, absolute position
measurement, matching inspection, distance and angle measurement, lead inspection, area
measurement by binary conversion, object counting by binary conversion, labeling measurements by
binary conversion, and point measurements.
You can select operating condition parameters to suit your application of the IV-S20.
[1] Positional deviation/absolute position measurement
・Operating instruction example _ See “3-2 Position measurement.”
・Setting measurement program _ See “9-3 Positional deviation/absolute position
measurement.”
Purpose
Example
Application
The gray scale search function makes it possible to measure positional deviation as
well as the absolute position.
· It is also possible to detect the position of sub-pixel units with great accuracy.
[Determining the location of the positioning (the fiducial mark) mark that identifies the
position of the substrate]
(1) 1 point search: Detecting the deviation in position in X and Y directions
· The deviation angle (θ), determined in the 2 point search, is used to readjust the
rotation of the image for measurements 1 to 3.
(2) 2 point search: Determining positional deviation in X and Y directions as well
as rotational deviation
Used to determine the position of machine parts and substrates.
X2-X1
Y2-Y1
Search area
Inspection Image: Center coordinates (X2,Y2)
Reference image: Center coordinates (X1,Y1)
[Measured result]
Center coordinates: (X2,Y2)
Amount of deviation: X2-X1, Y2-Y1
[Measured result]
· Center coordinates of image a: (Xa2,Ya2)
· Amount of deviation of image a: Xa2-Xa1, Ya2-Ya1
· Center coordinates of image b: (Xb2,Yb2)
· Amount of deviation of image b: Xb2-Xb1, Yb2-Yb1
· Deviation angle: (θ)
Xa2-Xa1
Ya2-Ya1
θ
Search area
(image a) Yb2-Yb1
Xb2-Xb1 Search area (image b)
Anglar deviation: ( θ)
Inspection image a: Center coordinates (Xa2,Ya2)
Reference image a: Center coordinates (Xa1,Ya1)
Detailed
instruc-
tion
Inspection image b: Center coordinates (Xb2,Yb2)
Reference image b: Center coordinates (Xb1,Yb1)

1-4
1
Overview
[2] Degree of match for shape and size
Search area
for positioning Search area for positioning
Criterion image
for positioning Criterion image for positioning
Criterion image
for measuring object Criterion image for measuring object
▲
Good label
SERIAL NO.
8F053G26
MODEL
IV
-
S20
SERIAL NO. 8F053G26 MODEL IV
-
S20
▲
NG label
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.
Pur-
pose
Exam-
ple
Appli-
cation
Detectpositionaldeviationoflabels,detectcontaminationofdifferentparts,inspectthemounting
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]
・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 1above.
3If the matching level of the object image is low, the IV-S20 can determine that the
label position is NG.
Detailed
instruc-
tion
・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”
[3] Distance and angle measurement
Search area
(criterion image a)
Search area
(criterion image b)
Criterion image b
Criterion image a
Exam-
ple
Appli-
cation Measurement of mounted electronic parts
Pur-
pose 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
[Measuring IC packages]
・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.
Register criterion image a and b by matching edges of the IC package.
Detailed
instruc-
tion
・Operating instruction example _See “3-4 Distance measurement”
・Setting measurement program _See “9-5 Distance and angle measurement”

1-5
1
Overview
[4] Lead inspection
·Inspection procedure
1Calculate the mid points (K1 to K4) of the leads along the inspection line.
2Look for bent leads by comparing the difference between the maximum and
minimum distances of P1 to P3 .
3Check the maximum and minimum length of the leads (L1 to L4).
K1
Lead
Inspection line
K2 K3 K4
P2P1 P3
L4
·P1 to P3: Distance between
leads
·K1 to K4: Mid point of each
lead
·L1 to L4: Lead length
·Number of leads
·Detect missing or incorrectly
spaced leads
L1 L2 L3
［Lead inspection］
Detailed
instruc-
tion
·Operating instruction example _See “3-5 Lead inspection”
·Setting measurement program _See “9-6 Lead inspection”
Pur-
pose
Exam-
ple
Based on positional information obtained from the gray scale search function, inspect the
condition of IC leads and connector pins. (No. of detected lead pins: Max. 128 pieces)
Appli-
cation Inspect IC leads or connector pins
[Inspect the layout of the IC leads or connector pins]
Workpiece
Detailed
instruc-
tion
·Operating instruction example _See“3-1 Area measurement by binary conversion”
·Setting measurement program _See“9-7 Area measurement by binary conversion”
• Inspection procedure
Pur-
pose
Exam-
ple
Appli-
cation
Detect the existence/absence and size of a workpiece when “the workpiece is one point”or
“measurement position is fixed.”
·Convert the specified pixel area to binary values and measure the size of the white area.
Check for the existence of bearings inserted by a bearing insert machine, prevent contam-
ination of different parts in automobile production lines, determine the type of water-proof
caps, check for the existence/absence of bottle labels, inspect the cuircuit traces on
PWBs, check for the presence of grease, check for existence of frozen foods.
Capture image
[Measured result]
•Workpiece area
Convert to binary values Measure (area)
[5] Area measurement by binary conversion

1-6
1
Overview
[7] Object identification (labeling) by binary conversion
Objects
No.1 No.2 No.3
No.5No.4 No.6
When there are several objects and the measuring position is arbitrary, the presence or
absence of objects and the size of the objects can be determined.
- The specified pixel area is converted to a binary image. The number of objects, total
size of the white area (the objects) and the area, center of gravity, main axis angle, fillet
diameter, and circumference of each white area can be measured.
Detailed
instruc-
tion - Setting measurement program _See "9-9 Object identification by binary conversion"
- Inspection procedure
Pur-
pose
Exam-
ple
Appli-
cation Counting the number of food products or parts, measuring the sloped angle or center of
gravity of parts, and measuring the size of food products.
[Measured result]
ÆObject identification (labeling and
numbering), number of objects
present, total area
ÆArea, center of gravity, main axis
angle, fillet diameter, and circumf-
erence of each object (No.1 to
No.6).
[Measurement of 6 objects]
Measurement (area, gravity center, spindle axis angle,
fillet diameter, and circumference )
Image capture Convert to binary values Label (with serial numbers)
[6] Counting quantities by binary conversion
Detailed
instruc-
tion - Setting measurement program _See "9-8 Counting quantities by binary conversion"
- Inspection procedure
[Measured result]
ÆNumber of workpieces/total area siz
Capture image Convert to binary values Measure (quantity, total area size)
Workpiece
Pur-
pose
Exam-
ple
Appli-
cation
Checks the number of objects (max. 3000 pcs.) when there is more than one object in an
image. Measurement of the object’s position is optional.
- When the specified pixel field has been converted to a binary image, the white areas
are measured or identified as separate objects and counted.
Counting pieces of food or parts

1-7
1
Overview
•Operating instruction example
_See “3-6 Existance inspection by point measurement”
•Setting measurement program
_See “9-10 Existance inspection by point measuremet”
·Inspection sequence
Image capture Binary image
conversion Black/white evaluation of points
Average light
level Light level evaluation of points
Purpose
Example
Applications Checking the presence or absence of packed parts, inspecting the working
condition of LEDs or fluorescent character display tubes, and sorting household
electric appliances
[Inspection at 6 points]
The presence or absence of target objects is examined.
·A simple black or white evaluation is made in the specified pixel area of binary
images.
·The light level in the specified pixel area is averaged, and a decision is made
whether or not it is within the specified lightness range in gray scale images.
Number of points (max.)
: 128 points at average light levels
256 points in binary images
Point size: 2 m x 2n pixels
(m, n = 1 to 16)
Detailed
instruction
[8] Existence inspection by point measurement