12 Pixel Data Processing
12.4.3
User-defined Look-up Table
In the ’User’ mode, the mapping of input to output grey levels can be configured arbitrarily by
the user. This procedure is explained in Section C.4.
U
s e r L U T
y = f ( x )
1 2 b i t
8 b i t
Figure 12.10: Data path through LUT
12.4.4
Region LUT and LUT Enable
Two LUTs and a Region-LUT feature are available in the camera. Both LUTs can be enabled
independently (see Table 12.2). LUT 0 superseeds LUT1.
Enable LUT 0
Enable LUT 1
Enable Region LUT
Description
-
-
-
LUT are disabled.
X
don’t care
-
LUT 0 is active on whole image.
-
X
-
LUT 1 is active on whole image.
X
-
X
LUT 0 active in Region 0.
X
X
X
LUT 0 active in Region 0 and LUT 1 active
in Region 1. LUT 0 supersedes LUT1.
Table 12.2: LUT Enable and Region LUT
When Region-LUT feature is enabled, then the LUTs are only active in a user defined region.
Examples are shown in Fig. 12.11 and Fig. 12.12.
Fig. 12.11 shows an example of overlapping Region-LUTs. LUT 0, LUT 1 and Region LUT are
enabled. LUT 0 is active in region 0 ((x00, x01), (y00, y01)) and it supersedes LUT 1 in the
overlapping region. LUT 1 is active in region 1 ((x10, x11), (y10, y11)).
Fig. 12.12 shows an example of keyhole inspection in a laser welding application. LUT 0 and
LUT 1 are used to enhance the contrast by applying optimized transfer curves to the individual
regions. LUT 0 is used for keyhole inspection. LUT 1 is optimized for seam finding.
.
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MAN093 08/2021 V1.1
Summary of Contents for MV4 Series
Page 8: ...CONTENTS 8 of 143 MAN093 08 2021 V1 1 ...
Page 12: ...1 Preface 12 of 143 MAN093 08 2021 V1 1 ...
Page 40: ...4 Image Acquisition 40 of 143 MAN093 08 2021 V1 1 ...
Page 42: ...5 Exposure Control 42 of 143 MAN093 08 2021 V1 1 ...
Page 52: ...6 Counter Timer 52 of 143 MAN093 08 2021 V1 1 ...
Page 64: ...10 Image Format Control 64 of 143 MAN093 08 2021 V1 1 ...
Page 66: ...11 Frame Rate 66 of 143 MAN093 08 2021 V1 1 ...
Page 82: ...12 Pixel Data Processing 82 of 143 MAN093 08 2021 V1 1 ...
Page 92: ...12 Pixel Data Processing 92 of 143 MAN093 08 2021 V1 1 ...
Page 96: ...13 Precautions 96 of 143 MAN093 08 2021 V1 1 ...
Page 120: ...16 Troubleshooting 120 of 143 MAN093 08 2021 V1 1 ...
Page 126: ...19 Support and Repair 126 of 143 MAN093 08 2021 V1 1 ...
Page 128: ...20 References 128 of 143 MAN093 08 2021 V1 1 ...