Allied Vision Technologies AVT Stingray Manual de instrucciones Pagina 114

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Description of the data path
STINGRAY Technical Manual V2.2.0
113
On the left you see the image after shading correction.
The surface plot on the right clearly shows nearly no more gradient of
the brightness (0: brightest 255: darkest pixels). The remaining gra-
dient is related to the fact that the source image is lower than 50% on
the right hand side.
The histogram shows a peak with very few different gray values.
Figure 59: Example of shaded image
surface plot
histogram
255.0
0.0
4
8
0
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0
p
i
x
e
l
s
6
4
0
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0
p
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x
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s
2560
Count: 307200 Min: 139
Mean: 157.039 Max: 162
StdDev: 2.629 Mode: 158 (84449)
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