Page 144
Vision Sensor SBSI/SBSC-EN, 8062650 - 1607b - 13/09/2016
Vision Sensor Manual
be good. If a code can not be detected any more after reducing the number of
scanlines, the number has to be increased again. Typical values: [0, 5, 10, 20 ...];
Default: 0
Min. ident. scanlines
Minimal number of identical scanlines for a decoding of a code symbol to be
accepted. If this parameter is not set (has a value of 0) a bar code is considered
decoded with the first scanline, which was successfully decoded. Increasing this
parameter to 2 or more is useful to avoid wrong readings. Typical values: [0, 2,
3, ...]; Default: 0
Start- / Stop pattern
Set searching criteria for a start or stop pattern to 'tolerant' or 'accurate'.
'Tolerant' will increase the detection chances of a bar code especially in images
with low contrast. 'Accurate' increases the robustness against false
detections. List of values: 'Tolerant', 'Accurate'; Default: 'Tolerant'
Slanted
If 'slanted' = 'On' improves readability of codes if single lines are orientated
different from the others like when the code is not on a plain surface. If
'slanted' = 'Off' default setting when all lines of the barcode are parallel in
image. If 'slanted = 'Auto' the sensor tries first ‘On’ and then ‘Auto’, this
setting can increase reading time. List of values: 'Off', 'Auto', 'On'; Default:
'Off'
Quiet zone
Enforces the detection of the quiet zones of a bar code.With 'Quiet zone'
='on' the Quiet zones must be at least as wide as specified by the
corresponding bar code standard.
With 'Quiet zone' set to an integer value greater than or equal 1, the quiet
zones must be at least as wide as 'Quiet zone' x X pixels.
With 'Quiet zone' = 'tolerant' a limited number of edges are allowed in the
quiet zone, but at most 1 per 4 module widths. The intent of this is to prevent
detecting only part of a bar code, while still allowing to read bar codes with
simple quiet zone violations.
With 'Quiet zone' = 'off', the quiet zones detection is disabled.
Detection of quiet zone prevents that simple bar code types are detected
inside of a longer bar sequence. Usually, values between 2 and 4 achieve
optimal results by effectively suppressing false bar codes, but still tolerating
small disturbances, textures, label edges, etc. next to the symbol.
Typical values: 'Off' 'On', 1, 2, 3, 4, 5; Default: 'Off
4.6.3.11 2D Code detector
4.6.3.11.1 2D Code detector, tab Code
Next topic:
Summary of Contents for SBSC-EN
Page 1: ......
