15
Inspections of Scratches and Dirt
Subtle scratches and dirt can be detected with more fine-tuned
conditions compared to conventional inspections.
Since you can clearly distinguish defects to be detected from the
background, the failure detection rate can be decreased.Combined
with our 5 million-pixel camera, this function enables much more
precise inspections of scratches.
C o l o r i m a g e s t a ke n by t h e c a m e r a a re
processed after being converted into black
and white pixels. The color extracted is
represented as white, and the other colors as
black. Based on minimum information, high
speed processing is possible. Since color
data is limited only to brightness, however, it
takes a long time to make optical adjustments
for extracting color features.
Color images are converted into 256 levels of
black-and-white brightness and the contrasts
of specific colors is enhanced. More precise,
stable results can be produced compared to
color segmentation. However, this method
has difficulty in capturing subtle variations in
color because all colors are converted into
black-and-white brightness levels. Therefore,
it is difficult to detect subtle changes in
images with low contrast.
Different colors are represented as different
positions in the 3D RGB space. Subtle
var iations in color can be recognized by
representing them as distances bet ween
different color pixels comprising this space.
Thus, scratches and dir t can be detected
accurately even in images with low contrast.
Color Segmentation Processing
Color Image Processing
Real Color Sensing
Black
White
Black
Dark
Bright
Dark
16 7 7 I t a l l ow s
the recognition
of 16,770,000
colors.
High Precision Inspections of Defect
You can confirm wave profiles and comparison elements on the screen.
This feature also enables easy thresholding setting and fine adjustments
on the screen.
Fine parameters for defect detection
allow fine settings at the pixel level.
Previous image processing
OMRON FZ series
It is useful for detecting scratches,
chipped edges or subtle dirt in
complex backgrounds.
I t i s u s e f u l f o r d e t e c t i n g
scratches and dir t in plain
backgrounds.
Fine Matching
Defect
Fine Matching / Defect
With our Real Color Sensing technology, FZ3 can accurately
recognize and process subtle variations in color. This feature helps
you detect unpredictable scratches and dirt. High precision defect
inspections are possible by using both Fine Matching and Defect
flexibly according to the background of each image.
Edges are detected reliably even when the contrast
between the background and subject is low.
What is Real Color Sensing?
In order to secure stable measurements in different inspection environments,
FZ Series feature Omron's proprietary Real Color Sensing processing, in
addition to the conventional color image processing.
R
G
B
Real
Color
Real
Color
Scratch detection profile displayed on the screen
[ Patent Pending ]
[ Patent Pending ]