Altera Video and Image Processing Suite User Manual
Page 232
Parameter
Value
Description
Default upper blur limit (per
color plane)
0 to 2
bits per symbol
–1,
Default = 15
Specify the default value for the blurred-edge
upper threshold in edge-adaptive sharpening.
This value will be the fixed edge threshold
value if you do not turn on Enable run-time
control of input/output frame size and
edge/blur thresholds.
Default lower blur limit (per
color plane)
0 to 2
bits per symbol
–1,
Default = 0
Specify the default value for the blurred-edge
lower threshold in edge-adaptive sharpening.
This value will be the fixed edge threshold
value if you do not turn on Enable run-time
control of input/output frame size and
edge/blur thresholds.
Vertical coefficients signed
On or Off
Turn on to force the algorithm to use signed
vertical coefficient data.
Vertical coefficient integer bits
0–32, Default = 1
Select the number of integer bits for each
vertical coefficient.
Vertical coefficient fraction bits 1–32, Default = 7
Select the number of fraction bits for each
vertical coefficient.
Horizontal coefficients signed
On or Off
Turn on to force the algorithm to use signed
horizontal coefficient data.
Horizontal coefficient integer
bits
0–32, Default = 1
Select the number of integer bits for each
horizontal coefficient.
Horizontal coefficient fraction
bits
1–32, Default = 7
Select the number of fraction bits for each
horizontal coefficient.
Fractional bits preserved
0–32, Default = 0
Select the number of fractional bits you want
to preserve between the horizontal and
vertical filtering.
Load scaler coefficients at run
time
On or Off
Turn on to update the scaler coefficient data
at run time.
Vertical coefficient banks
1–32, Default = 1
Select the number of banks of vertical filter
coefficients for polyphase algorithms.
Vertical coefficient function
• Lanczos_2
• Lanczos_3
• Custom
Select the function used to generate the
vertical scaling coefficients. Select either one
for the pre-defined Lanczos functions or
choose Custom to use the coefficients saved
in a custom coefficients file.
Vertical coefficients file
User-specified
When a custom function is selected, you can
browse for a comma-separated value file
containing custom coefficients. Key in the
path for the file that contains these custom
coefficients.
UG-VIPSUITE
2015.05.04
Scaler II Parameter Settings
17-11
Scaler II IP Core
Altera Corporation