IPSR-VIDEO Altera, IPSR-VIDEO Datasheet - Page 39

• Manufacturer Part Number: IPSR-VIDEO
• Description: RENEWAL Of IPS-VIDEO
• Manufacturer: Altera
• Series: IP Suitesr

Specifications of IPSR-VIDEO

• Software Application: IP CORE, SUITES
• Supported Families: Arria GX, Cyclone II, HardCopy II, Stratix II
• Features: Common Avalon Streaming (Avalon-St) Interface And Avalon-St Video Protocol
• Core Architecture: FPGA
• Core Sub-architecture: Arria, Cyclone, Stratix
• Rohs Compliant: NA
• Lead Free Status / RoHS Status: na

Chapter 3: Parameter Settings
2D Median Filter
Table 3–2. 2D FIR Filter Parameter Settings Tab, Coefficients Page
2D Median Filter
Table 3–3. 2D Median Filter Filter Parameter Settings
January 2011 Altera Corporation
Filter size
Runtime controlled
Coefficient set
Enable symmetric
mode
Coefficients
Coefficient Precision:
Signed
Coefficient Precision:
Integer bits
Coefficient Precision:
Fraction bits
Notes to
(1) The size of the coefficient grid changes to match the filter size when this option is changed.
(2) The values in the coefficient grid change when you select a different coefficient set.
(3) Editing these values change the actual coefficients and summands and the results values on the General page. Signed coefficients allow
Image width
Image height
Bits per pixel per
color plane
Number of color
planes in sequence
Filter size
negative values; increasing the integer bits increases the magnitude range; and increasing the fraction bits increases the precision.
Parameter
Parameter
(3)
Table
(1)
(3)
(2)
(3)
3–2:
(2)
32–2600, Default = 640
32–2600, Default = 480
4–20, Default = 8
1–3
3x3, 5x5
Table 3–3
3x3, 5x5, 7x7
On or Off
Simple Smoothing,
Simple Sharpening,
Custom
On or Off
9, 25, or 49 fixed-
point values
On or Off
0–35, Default = 0
0–35, Default = 6
Value
Value
shows the 2D Median Filter MegaCore function parameters.
Choose the size in pixels of the convolution kernel used in the filtering.
Turn on to enable run-time control of the coefficient values.
You can choose a predefined set of simple smoothing or simple sharpening
coefficients which are used for color model convolution at compile time.
Alternatively, you can create your own custom set of coefficients by modifying
the coefficients in the matrix.
When on, the 3×3 coefficient matrix must be symmetrical, which enables
optimization in the hardware reducing the number of multiplications required.
In this mode a limited number of matrix cells are editable and the remaining
values are automatically inferred. Symmetric mode is enabled for the
predefined coefficient sets but can be disabled when setting custom
coefficients. If you turn off this option while one of the predefined coefficient
sets is selected, its values are used as the defaults for a new custom set.
Each coefficient is represented by a white box with a purple box underneath.
The value in the white box is the desired coefficient value, and is editable. The
value in the purple box is the actual coefficient value as determined by the
coefficient fixed point type specified. The purple boxes are not editable. You
can create a custom set of coefficients by specifying one fixed-point value for
each entry in the convolution kernel. The matrix size depends on the selected
filter size.
Turn on if you want the fixed-point type that stores the coefficients to have a
sign bit.
Specifies the number of integer bits for the fixed-point type used to store the
coefficients.
Specifies the number of fractional bits for the fixed point type used to store
the coefficients.
Choose the required image width in pixels.
Choose the required image height in pixels.
Choose the number of bits per pixel (per color plane).
The number of color planes that are sent in sequence over one data
connection. For example, a value of 3 for R'G'B' R'G'B' R'G'B'.
Choose the size of kernel in pixels to take the median from.
Description
Description
Video and Image Processing Suite User Guide
3–3