5 Functionality
5.1.5
Decimation (colour cameras)
Decimation reduces the number of pixels in y-direction by skipping rows. Decimation in colour
cameras is slightly different from the monochrome cameras, because the order of the Bayer
pattern must be maintained.
Beginning from the first row, always two rows are read out and then an even number of rows
is skipped. The red rows in Fig. 5.11 are read out and the total number of rows is the sum of
the red rows.
The number of skipped rows for decimation d are:
H
skip
= (
d
−
1)
∗
2
The resulting number or rows for Window.H=h:
h
tot
= 2
∗
floor (
h/d
) + min(
h
mod (2
∗
d
)
,
2)
The total number of rows can be read by the property
Window.HInterface
.
Decimation
H
skip
2
2
3
4
4
6
5
8
Table 5.3: Values of
H
skip
as a function of decimation
Window.H
h
tot
, d=2
h
tot
, d=3
H
h
tot
, d=4
640
320
214
160
1024
512
342
256
1088
544
364
272
2048
1024
684
512
Table 5.4: Examples of total rows in colour decimation
D e c i m a t i o n = 2
W
in
do
w.
H
H
s k i p
= 2
D e c i m a t i o n = 3
H
s k i p
= 4
Figure 5.11: Example of decimation in colour cameras
34
Summary of Contents for D-2048 CameraLink Series
Page 1: ...User Manual Photonfocus D L 2048 CameraLink Series CMOS Area Scan Camera MAN054 11 2013 V1 3...
Page 2: ......
Page 4: ...2...
Page 8: ...CONTENTS 6...
Page 16: ...3 How to get started CameraLink Figure 3 4 PFRemote start window 14...
Page 92: ...8 Graphical User Interface GUI 90...
Page 94: ...9 Mechanical Considerations 92...
Page 96: ...10 Warranty 94...
Page 98: ...11 References 96...
Page 102: ...A Pinouts 100...
Page 108: ...B Camera Revisions 106...
