Image Acquisition
¾
Auto Contrast Tolerance
This parameter determines how much the distribution of intensities is
permitted to be changed by the
Auto Contrast
mode. This is helpful if there
are particularly strong contrasts in the image which would otherwise lead to a
considerable shift in intensities as a result of the
Auto Contrast
adjustment.
Value 0 retains the input value of the histogram limits.
Using the tolerance threshold it is possible to make the sharpening more
robust in relation to pixel anomalies. This means that extreme values are not
clipped.
Value 5 (Default) tolerates 5% anomalies at both ends of the histogram.
The following parameters are only available in the image processing
function "Unsharp Masking" in the AxioVision menu Processing
⇒
Sharpening as additional parameters, as their effect needs to be
precisely tailored to the respective image content.
They make it possible to limit the application of
Unsharp Masking
to certain
areas of the image. This allows homogeneous areas to be excluded from the
processing, for example, in order to minimize image noise there.
¾
Level Low
This threshold value determines the lower limit from which existing contrast
structures are changed.
Default: 0
¾
Level High
This threshold value prevents existing strong contrasts in the image from
being unnecessarily increased any further.
Default = 100
AxioCam MR Instal Reference
63
