EN
156
Software Module
Characteristic
Contrast The contrast parameter specifies which gray-scale contrast the mod-
el’s points must demonstrate. Contrast is a measure of local gray-
scale differences between the object and the background, as well as
between the parts of the object.
Auto Contrast, upper and lower threshold val-
ues, and hysteresis are calculated auto-
matically.
Auto-Contrast Only the contrast values are determined
automatically.
Auto-Contrast
Hysteresis
The hysteresis threshold values are deter-
mined automatically.
Auto Minimum
Magnitude
The minimum contrast magnitude is only
used for creating the model – the other in-
fluencing variables are not used.
Numeric Value This value specifies the minimum contrast
value of an edge transition which must be
achieved. The edge is only used for model
generation if this value is reached.
Min Contrast The minimum gray-scale contrast which the model will have to have
within the image later on during detection is specified here. In other
words, this parameter represents a demarcation of the sample from
noise within the image. For this reason, a good value corresponds to
the range of gray-scale change which is caused by noise within the
image. For example, if gray-scale values fluctuate within a range of
10 due to noise, the value should be set to 10. The value must be less
than the contrast parameter value.
Min Coincidence This parameter can be used to specify how much of a taught-in mod-
el has to be visible or should be detected within the search image.
Max Overlapping This parameter specifies how much of a taught-in model may be cov-
ered up, and nevertheless still detected as present.
To Next Page
Loading...