Altera Video and Image Processing Suite Manuel d'utilisateur Page 230

  • Télécharger
  • Ajouter à mon manuel
  • Imprimer
  • Page
    / 310
  • Table des matières
  • MARQUE LIVRES
  • Noté. / 5. Basé sur avis des utilisateurs
Vue de la page 229
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
Vue de la page 229
1 2 ... 225 226 227 228 229 230 231 232 233 234 235 ... 309 310

Commentaires sur ces manuels

Pas de commentaire