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376 WinView/32 Manual Version 2.4.M
Parameters
Offset:
The Offset parameter allows the video to be shifted negatively. The range is in
arbitrary units from 0 to 99 and the default setting is 10.0. The higher the setting,
the larger the offset that will be subtracted from every pixel in the image, in
effect shifting the entire image towards black. Used in conjunction with the
intensifier gain setting, this is particularly useful in applications where images
have very low contrast. You can offset the gray level down to black and then
increase the intensifier gain to bring up the residual contrast for the best possible
image. Note, however, that CCD well capacity limitations constrain the amount
of contrast enhancement that can be achieved.
The Automatic Gain and Automatic Black function should be OFF for the Offset
function to have any significant effect.
Edge Enhance:
This function increases the video high-frequency response, causing
edges in the image to become crisper. The range is 0 to 99 and the default setting
is 50. Note that the Edge Enhance box must be checked as well to activate the
Edge Enhance function.
Vertical Shade & Horizontal Shade:
These parameters allow you to independently
set the amount of vertical and horizontal shading to be applied to the image to
compensate for illumination non-uniformity. The range is 0 to 99 and the default
is 50 for both parameters. With respect to actual screen illumination, the range is
nominally 30%. If the field illumination non-uniformity exceeds this range, it
will be necessary to correct it at the experiment level. The Shading box must be
checked for the shading to be applied.
Edge Enhance box:
Checking this box causes the edge-enhance function to be
applied.
Shading:
Checking this box causes the horizontal and vertical shading functions to be
applied.
Gray Scale:
When checked, causes a full-range grayscale bar image to be displayed.
This display is very convenient in setting the monitor’s brightness and contrast
controls. For the best image in most situations, the darkest bar should be black
and the brightest should be full white.
Control Buttons:
Close:
Implements any setting changes and closes the window.
Help:
Displays context-sensitive help for the V/ICCD (Focus) tab page.