IPSR-VIDEO Altera, IPSR-VIDEO Datasheet - Page 82

• 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

5–2
Table 5–1. 2D FIR Filter Avalon-ST Video Protocol Parameters
2D Median Filter
Video and Image Processing Suite User Guide
Frame Width
Frame Height
Interlaced / Progressive
Bits per Color Sample
Color Pattern
Parameter
This is performed in four stages, in the following order:
1. Result Scaling. You can choose to scale up the results, increasing their range. This
2. Removal of Fractional Bits. If any fractional bits exist, you can choose to remove
3. Conversion from Signed to Unsigned. If any negative numbers can exist in the
4. Constrain to Range. If any of the results are beyond the range specified by the
The 2D FIR Filter MegaCore function can process streams of pixel data of the types
shown in
The 2D Median Filter MegaCore function provides a means to perform 2D median
filtering operations using matrices of 3×3 or 5×5 kernels.
Each output pixel is the median of the input pixels found in a 3x3, 5x5, or 7×7 kernel
centered on the corresponding input pixel. Where this kernel runs over the edge of the
input image, zeros are filled in.
As selected in the parameter editor.
As selected in the parameter editor.
Progressive.
Number of bits per color sample selected in the parameter editor.
One, two or three channels in sequence. For example, if three channels in
sequence is selected, where ,
is useful to quickly increase the color depth of the output. The available options
are a shift of the binary point right –16 to +16 places. This is implemented as a
simple shift operation so it does not require multipliers.
them.
There are three methods:
■
■
■
results and the output type is unsigned, you can choose how they are converted.
There are two methods:
■
■
output data type (output guard bands, or if unspecified the minimum and
maximum values allowed by the output bits per pixel), logic to saturate the results
to the minimum and maximum output values is automatically added.
Truncate to integer. Fractional bits are removed from the data. This is
equivalent to rounding towards negative infinity.
Round - Half up. Round up to the nearest integer. If the fractional bits equal
0.5, rounding is towards positive infinity.
Round - Half even. Round to the nearest integer. If the fractional bits equal 0.5,
rounding is towards the nearest even integer.
Saturate to the minimum output value (constraining to range).
Replace negative numbers with their absolute positive value.
Table
5–1.
,
and
can be any color plane:
Value
Chapter 5: Functional Descriptions
January 2011 Altera Corporation
2D Median Filter
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