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5 Functionality
5.9.2
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. 5.30), gamma < 1.0 results
in an amplification (see Fig. 5.31). 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 5.30: 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 5.31: Applying gamma correction to an image (gamma < 1)
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MAN069 12/2018 V1.1
Summary of Contents for MV1-D4096 Series
Page 1: ...Photonfocus MV1 D4096 Camera Series CMOS camera with GigE interface MAN069 12 2018 V1 1 ...
Page 10: ...1 Preface 10 of 123 MAN069 12 2018 V1 1 ...
Page 12: ...2 Introduction 12 of 123 MAN069 12 2018 V1 1 ...
Page 32: ...4 Product Specification 32 of 123 MAN069 12 2018 V1 1 ...
Page 94: ...6 Hardware Interface 94 of 123 MAN069 12 2018 V1 1 ...
Page 108: ...7 Software 108 of 123 MAN069 12 2018 V1 1 ...
Page 110: ...8 Mechanical Considerations 110 of 123 MAN069 12 2018 V1 1 ...
Page 112: ...9 Troubleshooting 112 of 123 MAN069 12 2018 V1 1 ...
Page 118: ...12 Support and Repair 118 of 123 MAN069 12 2018 V1 1 ...
Page 120: ...13 References 120 of 123 MAN069 12 2018 V1 1 ...
Page 124: ...B Camera Revisions 124 of 123 MAN069 12 2018 V1 1 ...