11 Image Data Processing
11.4.3
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 11.6: Data path through LUT
11.4.4
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 11.1). 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 11.1: 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. 11.7 and Fig. 11.8.
Fig. 11.7 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. 11.8 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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MAN078 12/2018 V1.1
Summary of Contents for MV0 CMOSIS Series
Page 10: ...1 Preface 10 of 111 MAN078 12 2018 V1 1...
Page 38: ...4 Image Acquisition 38 of 111 MAN078 12 2018 V1 1...
Page 52: ...8 Image Format Control 52 of 111 MAN078 12 2018 V1 1...
Page 78: ...12 Precautions 78 of 111 MAN078 12 2018 V1 1...
Page 88: ...14 Mechanical Considerations 88 of 111 MAN078 12 2018 V1 1...
Page 90: ...15 Troubleshooting 90 of 111 MAN078 12 2018 V1 1...
Page 96: ...18 Support and Repair 96 of 111 MAN078 12 2018 V1 1...