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4.6 Image Correction
2400
2600
2800
3000
3200
3400
3600
3800
4000
4200
0
0.2
0.4
0.6
0.8
1
Histogram of the uncorrected grey reference image
Grey level, 12 Bit [DN]
Relative number of pixels [−]
grey reference image ok
grey reference image too bright
Figure 4.35: Proper grey reference image for gain correction
5
7
6
5
7
6
6
5
6
4
3
7
3
4
7
1
7
4
6
4
4
3
1
3
4
c
u r r e n t i m a g e
)
5
6
6
5
5
6
5
5
4
4
3
7
3
4
7
1
7
4
6
4
4
3
1
3
4
)
1
1
1
2
- 1
2
- 2
- 1
0
1
- 1
1
- 1
0
2
0
- 1
0
- 2
0
1
1
- 2
- 2
- 2
o f f s e t c o r r e c t i o n
m a t r i x
-
1
1 . 2
1
0 . 9
1
1 . 2
- 2
0 . 9
1
1
- 1
1
0 . 8
1
1
0
1 . 3
0 . 8
1
0
1
1
- 2
- 2
- 2
g a i n c o r r e c t i o n
m a t r i x
=
.
c o r r e c t e d i m a g e
)
Figure 4.36: Schematic presentation of the corrected image using gain correction algorithm
4.6.5
Correction Ranges
Table 4.5 shows the minimum and maximum values of the correction matrices, i.e. the range
that the offset and gain algorithm can correct.
Minimum
Maximum
Offset correction
-1023 DN @ 12 bit
+1023 DN @ 12 bit
Gain correction
0.7
1.69
Table 4.5: Offset and gain correction ranges
.
MAN064 02/2020 V1.1
49 of 109
Summary of Contents for MV1-D1024E
Page 6: ...CONTENTS 6 of 109 MAN064 02 2020 V1 1...
Page 10: ...1 Preface 10 of 109 MAN064 02 2020 V1 1...
Page 14: ...2 How to get started CameraLink Figure 2 4 PFRemote start window 14 of 109 MAN064 02 2020 V1 1...
Page 68: ...5 Precautions 68 of 109 MAN064 02 2020 V1 1...
Page 94: ...8 Graphical User Interface GUI 94 of 109 MAN064 02 2020 V1 1...
Page 104: ...12 References 104 of 109 MAN064 02 2020 V1 1...