5 Functionality
5.6.2
Gamma
The ’Gamma’ mode performs an exponential amplification, configurable in the range from 0.4
to 4.0. Gamma > 1.0 results in an attenuation of the image (see Fig. 5.26), gamma < 1.0 results
in an amplification (see Fig. 5.27). Gamma correction is often used for tone mapping and
better display of results on monitor screens.
0
200
400
600
800
1000
1200
0
50
100
150
200
250
300
Grey level transformation − Gamma: y = (255 / 1023
γ
)
⋅
x
γ
(
γ
≥
1)
x: grey level input value (10 bit) [DN]
y: grey level output value (8 bit) [DN]
γ
= 1.0
γ
= 1.2
γ
= 1.5
γ
= 1.8
γ
= 2.5
γ
= 4.0
Figure 5.26: Applying gamma correction to an image (gamma > 1)
0
200
400
600
800
1000
1200
0
50
100
150
200
250
300
Grey level transformation − Gamma: y = (255 / 1023
γ
)
⋅
x
γ
(
γ
≤
1)
x: grey level input value (10 bit) [DN]
y: grey level output value (8 bit) [DN]
γ
= 1.0
γ
= 0.9
γ
= 0.8
γ
= 0.6
γ
= 0.4
Figure 5.27: Applying gamma correction to an image (gamma < 1)
52
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...