IPSR-VIDEO Altera, IPSR-VIDEO Datasheet - Page 122

• 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

5–42
Video and Image Processing Suite User Guide
The motion-adaptive algorithm fills in the rows that are missing in the current field by
calculating a function of other pixels in the current field and the three preceding fields
as shown in the following sequence:
1. Pixels are collected from the current field and the three preceding it (the X denotes
Figure 5–22. Pixel Collection for the Motion-Adaptive Algorithm
2. These pixels are assembled into two 3×3 groups of pixels.
Figure 5–23. Pixel Assembly for the Motion-Adaptive Algorithm
3. The minimum absolute difference value is normalized into the same range as the
4. Two pixels are selected for interpolation by examining the 3×3 group of pixels
5. The function uses a weighted mean of the interpolation pixels to calculate the
the location of the desired output pixel)
minimum absolute difference of the two groups.
input pixel data. If you select the Motion bleed algorithm, the function compares
the motion value with a recorded motion value for the same location in the
previous frame. If it is greater, the function keeps the new value; if the new value is
less than the stored value, the function uses the motion value that is the mean of
the two values. This action reduces unpleasant flickering artefacts but increases
the memory usage and memory bandwidth requirements.
from the more recent two fields for edges. If the function detects a diagonal edge,
the function selects two pixels from the current field that lie on the diagonal,
otherwise the function chooses the pixels directly above and below the output
pixel.
1
output pixel and the equivalent to the output pixel in the previous field with the
following equation:
Motion = MAD
The 4:2:2 compatibility mode prevents incorrect interpolation of the chroma
samples along the diagonal edges.
C - 3
Output Pixel = M .
C - 2
Upper Pixel + Lower Pixel
Previous Frame
2
(Figure
C - 1
5–22).
+ (1 - M) . Still Pixel
,
Current Frame
Current Field (C)
Chapter 5: Functional Descriptions
January 2011 Altera Corporation
Figure
X
5–23shows the
Deinterlacer