24
7.7.2 Image processing parameter
Item
Serial command
Description
Image
pre-processing
0
NO Image pre-processing
Black Dilation
1
3
5
7
9
Erosion 2 x 2
Erosion 3 x 3
Erosion 5 x 5
Erosion 2 x 1(w)
Erosion 1 x 2(h)
White Dilation
2
4
6
8
10
Dilation 2 x 2
Dilation 3 x 3
Dilation 5 x 5
Dilation 2 x 1(w)
Dilation 1 x 2(h)
White & Black
Reverse
20
Reverse White and Black
Contrast Enhancements
*2
21
Cont(L12cut): The portion under brightness 12.5% of the whole is
deleted in dark side from origin image 256 gray-scale steps, and
the remaining portion is transformed into 256 steps.
22
Cont (L22cut): The portion under brightness 25% of the whole is
deleted in dark side from origin image 256 gray-scale steps, and
the remaining portion is transformed into 256 steps.
23
Cont (H23cut): The portion over brightness 12.5% of the whole is
deleted in bright side from origin image 256 gray-scale steps, and
the remaining portion is transformed into 256 steps.
24
Cont (H24cut): The portion over brightness 25% of the whole is
deleted in bright side from origin image 256 gray-scale steps, and
the remaining portion is transformed into 256 steps.
25
Cont (LH12cut): The portion under brightness 12.5% of the whole
is deleted in dark side and the portion over brightness 12.5% of the
whole is deleted in bright side from origin image 256 gray-scale
steps, and the remaining portion is transformed into 256 steps.
26
Cont (LH22cut): The portion under brightness 25% of the whole is
deleted in dark side and the portion over brightness 25% of the
whole is deleted in bright side from origin image 256 gray-scale
steps, and the remaining portion is transformed into 256 steps.
