Grass Valley KAM-XM-SERIES v.1.4.1 User Manual
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KAM-XM-SERIES Instruction Manual
Configuration and Adjustments
•
Common Side (Common Left & Right) – this mode ensures that the left
and right edges of the input image match the left and right edge of the
output aspect ratio. As illustrated in the Anamorphic example (
), for a 4:3 image, the left and right edges are stretched to
match the left and right edges of the output.
In order to maintain correct geometry of the image, in Common Side
mode the input image is stretched vertically as well, creating a zoom
effect (
). This method results in correct geometry of the image
but also results in overall loss of approximately 33% of the input infor-
mation in the vertical domain. This loss of information means less ver-
tical information is available to the interpolation process resulting in
lowering the overall resolution of the output image.
Figure 11. Common Sides Mode
•
FlexView – (currently only available in 480i/59.94 to 1080i/59.94 up
conversion) is a non-linear anamorphic aspect ratio designed for use
when converting 4:3 material to 16:9 without the traditional distortion
of a normal anamorphic stretch. FlexView leaves the center portion of
the image untouched and then applies increasing amounts of stretch
closer to the edges of the image, giving a more realistic conversion.
Other aspect ratio controls include the following:
•
Zoom Crop – when turned on, will zoom the image by 3 pixels and then
crop the image by 3 pixels. This corrects issues that arise on the top or
bottom edge or on the left or right side of an image.
•
Edge Trim – this control adjust the amount of border cropping in the X
and Y directions. It is adjustable from 0-50 or 0-20 pixels, depending on
the conversion currently in use.
•
Fill Shade – this control is used when input the aspect ratio is smaller
than the output aspect ratio and there are areas in the output display
that are filled with black. The Fill Shade control adjusts the luminance
level (Y) and color (Cb and Cr) of these areas from 64 (digital black) to
940 (digital white).
Stretched
vertically