GUIDE TO INSTALLATION AND OPERATION
XVP-3901 |
33
5.4.1.4 Masks sub-section
Mask: Horizontal and Vertical
Sometimes with aspect ratio conversion, some of the edges of the original image are exposed in the output signal.
Often, there will be artifacts in the source along these edges, extending for several lines vertically or several pixels
horizontally after conversions. Masks are adjustable “curtains” which can be used to frame the output image, covering
up the edge artifacts and leaving a clean transition from image to mask.
Four scroll boxes with data windows for reporting and direct data entry are used to set the mask position on the four
sides of the output image. Top and bottom position are set in lines, while left and right position are set in pixels.
Masks should be adjusted by viewing the output on a video monitor and positioning the masks to cover edge effects
with a minimum loss of clean picture content. Usually masks are the final adjustment to be made. The masking is
shown on the top right Output screen by graying out the masked portion. Note that mask – or Background - color may
be changed in the
Advanced
tab. The maximum amount of masking that can be introduced depends on the image
Output Format 16:9
Input
Format
(selected by AFD Mode pulldown)
4:3
16:9
Presets
Output after ARC processing
Figure 5.13 Available Presets for various AFD Mode selections
(16:9 output)