2011

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information on fields to make full frames at particular points in time. A missing
pixel can be interpolated by vertical interpolation of the field at the given
time or by temporal interpolation using the previous and next field or a blend
of the two. Adaptive video de-interlacing calculates a separate blend factor for
each pixel based on the amount of local motion, so that vertical scanline
interpolation is used in areas of motion, and temporal interpolation is used
in static portions of the scene. This preserves detail in static portions of the
scene while removing interlacing artifacts in areas of motion.
Use the Deinterlace tool to perform the following steps of the deinterlacing
process:
Determine the field dominance.
Select fields (frame rate conversion).
Adjust the adaptive threshold.
Choose a scanline (spatial) interpolation method.
Choose antialiasing parameters.
Choose a temporal interpolation method.
The Deinterlace tool UI has the following parameters:
Adaptive thresholdTemporal interpola-
tion
Spatial interpola-
tion
Field and format
settings
Determining Field Dominance
The field dominance is whether the top field comes before or after the bottom
field in time. The top field means the field which contains the highest vertical
scanline to be displayed.
To set the field dominance:
1 Set the format to either Non-NTSC or NTSC. If the format is NTSC the
dominance will be labeled Upper First-Field 2 and Lower-First Field 1. If
796 | Chapter 33 Video Tools