3. What is Machine Vision?
Lighting
Techniques to make
part look its best
Components of a
MachineVision System
Field ofView
Communications
Send decisions to
other devices Part: Good
# Caps:
1
Image Acquisition
Camera taking a picture
VisionTools
Evaluate the picture
4. ImageAcquisition:
Imager
Microchip that converts light energy
into a digital information (pixels)
CCD & CMOS are most common imager
types
Pixels
The smallest piece of a digital
image
Camera Resolution is measured in
pixels
– 640 x 480 or 0.3 Megapixels
– 1600 x 1200 or 2.5 Megapixels
Field ofView
Parts
8. 1.Part arrives at inspection station
2.Proximity or Photo sensor detects
part & sends trigger to vision sensor
3.Part is illuminated
4.Image is acquired and
digitized
5.Vision software processes image
and analyzes part as Good or
Bad
6.Discrete output activates
reject diverter if part is Bad
7.Display shows operator rejected
parts and production statistics
GoodBad
12. 1. Quality Control:
- Food
Problems:
- Wrong pie in wrapper
- Damaged pies
Solution:
- Color vision sensors
installed
- Quality inspection for
damaged pies
Good Pie Coated with gaps in
shell
Coated with gap in
shell
Uncoated with holes
13. Beverages:-
Problems:
- Liquid in bottles not
consistent in color
- Matched labels
Solution:
- DVT color vision sensor
- Color monitoring of
liquid color
14. 2. Bottling, labeling & thread
inspection:
Problem:
- Need to verify cap &
tightened correctly
- Check safety ring
Solution:
- Gauging tool in vision
sensor measures distance
from neck to top of the
cap
- Verifies safety ring
16. 3. Product Safety:
Label Quality check
Problem: - Label missed or torn
- Label might have ‘flag’, if not applied
fully
Solution: - Measure label to check for torn, missing
or skew labels
- Elimination of ‘flag’
17. PC Vision Sees the Entire
Product:
Verify
Product Size
Read
Bar Code
Inspect
Label Seam
18. 4. Product traceability:
-Can code verification
-Can Code verification
system installed.
- For no cans should be
mislabeled.
19. BAR code reading and grading
2D matrix code reading
OCR/ OCV
- Optical Character recognition
- Optical character verification
20. 5. Material Handling:
- Locating the product conveyer and placing
into the boxes
- Vision sensor provides robotic guidance
21. Advantages:
Lower capital costs
Increased productivity
Faster time to market
Lower production costs
Reduced scrap / rework
Increased customer satisfaction
Improved brand image