Altera Video and Image Processing Suite - Manual (Page 230)

• The sharpening filter is primarily for downscale, but you may also use it with upscale. You may enable
or disable this functionality at runtime.
• The edge-adaptive sharpening filter attempts to detect blurred edge in the scaling video stream, and
applies a sharpening filter where blurred edges are detected.
• The areas that are not detected as blurred edges are left unaltered.
• The blurred edge detection uses upper and lower blur thresholds, which you may alter at compile time
or runtime.
• The sharpening engine detects a blurred edge where the difference between neighboring pixels falls
between the upper and lower blur thresholds.
• As with the edge threshold for the edge-adaptive scaling, the upper and lower blur threshold values are
specified per color plane.
Note: Altera does not recommend you to use this option with nearest-neighbor algorithm because it is of
little or no benefit.
Scaler II Parameter Settings
Table 17-2: Scaler II Parameter Settings
Parameter Value Description
Bits per symbol 4–20, Default = 10 Select the number of bits per color plane.
Symbols in parallel 1–4, Default = 2 Select the number of color planes sent in
parallel.
Symbols in sequence 1–4, Default = 1 Select the number of color planes that are
sent in sequence.
Enable run-time control of
input/output frame size
On or Off Turn on to enable run-time control of the
image size. If you do not turn on this option,
the Scaler II IP core does not respond to the
resolution changes in control packets; and the
input and output resolutions are set to the
maximum values you specify.
Maximum input frame width 32–2600, Default =
1920
Select the maximum width for the input
frames (in pixels).
Maximum input frame height 32–2600, Default =
1080
Select the maximum height for the input
frames (in pixels).
Maximum output frame width 32–2600, Default =
1920
Select the maximum width for the output
frames (in pixels).
Maximum output frame height 32–2600, Default =
1080
Select the maximum height for the output
frames (in pixels).
4:2:2 video data On or Off
• Turn on to use the 4:2:2 data format.
• Turn off to use the 4:4:4 video format.
UG-VIPSUITE
2015.05.04
Scaler II Parameter Settings 17-9
Scaler II IP Core Altera Corporation
Send Feedback