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4.1.4 Extra gain value
(6) Extra gain value
[DDMexgain]
Extra gain value also affects the brightness of the images taken by the reader.
While a higher extra gain value will brighten the image, it could also introduce
noise at the higher settings.
DDMexgain = a (a: 1 to 15)
4.1.5 Black level adjustment
(7) Black level adjustment
[DDMblack]
The
black level can improve the contrast of the images taken by the reader
by controlling the black level of the CMOS sensor. Better contrast can lead to a
higher reading ratio. However higher black level will make the image too dark
for optimal decoding.
DDMblack=a (a: -127 to 127)
4.1.6 Image preprocessing
(8) Image
preprocessing
[DDMpreproc]
Image processing filters are available for difficult to decode symbols. Under
certain circumstances enlarging, black/white reversal, or applying contrast
enhancement will increase the decodability of the images captured. Please
refer to section 7.8 Image Preprocessing for more imformation.
4.1.7 Mirrored symbol
(9) Mirrored
symbol
[DDMmirror]
The reader can decode symbols that are mirrored by settings the DDMmirror
command appropriately.
DDMmirror=a (a: 0 to 3)
0: Read only normal type (not mirrored)
1: Read only mirrored type
2: Read normal type and if it fails, try to read it as mirrored type
3: Read mirrored type and if it fails, try to read it as normal type
Summary of Contents for TFIR-31LAN series
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Page 89: ...87 7 14 Table of Character code...
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