H.264 Motion
Estimation Engine v1.0
User Guide
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Table of Contents
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Schedule of Figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Schedule of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Guide Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Typographical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Online Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
About the Core. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Recommended Design Experience. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Additional Core Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Technical Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Feedback. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Manual Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Netlists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
VHDL Template Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Motion Estimation in the H.264 Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Test Bench Release. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Running the Test Bench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Verification Platform Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Running the Verification Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Verification Process (Level 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Verification Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
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H.264 Motion Estimation Engine
Input Sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Directory Tree Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Regression Test Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
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H.264 Motion Estimation Engine
Schedule of Figures
Figure 3-1: H.264 Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 3-2: Motion Estimation Engine Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 5-1: Verification Process (Level 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure A-1: Directory Tree Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
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Schedule of Tables
Table 5-1: Verifcation Level Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table A-1: Regression Test Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
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Preface
About This Guide
This document is intended to guide the user through all aspects of installation,
demonstration, simulation, verification, and general usage of the Motion Estimation
Engine core. It should be read in conjunction with the Xilinx Motion Estimation Engine
Product Specification (DS648).
Guide Contents
This manual contains the following chapters:
•
“Introduction,” provides information about the core, recommended design
experience, additional core resources, technical support, and core and document
feedback.
•
•
•
“Installing the H.264 Motion Estimation Engine Core,” provides instructions for
installing the core.
“Designing with the H.264 Motion Estimation Engine Core,” describes how to include
the core into the designer’s system, along with a list of the files provided.
“Simulating the H. 264 Motion Estimation Engine Core,” describes a test bench
architecture that was created in the ModelSim® environment for simulation of the
core.
•
•
core.
Appendix , “Supporting Information,”provides the input sequences, directory tree
structure, regression test summary, and references.
Additional Resources
To find additional documentation, see the Xilinx website at:
To search the Answer Database of silicon, software, and IP questions and answers, or to
create a technical support WebCase, see the Xilinx website at:
Conventions
This document uses the following conventions. An example illustrates each convention.
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Preface: About This Guide
Typographical
The following typographical conventions are used in this document:
Convention
Meaning or Use
Example
Messages, prompts, and
program files that the system
displays
Courier font
speed grade: - 100
Literal commands that you enter
in a syntactical statement
Courier bold
ngdbuild design_name
Commands that you select from
a menu
File → Open
Helvetica bold
Keyboard shortcuts
Ctrl+C
Variables in a syntax statement
for which you must supply
values
ngdbuild design_name
See the Development System
Reference Guide for more
information.
Italic font
References to other manuals
If a wire is drawn so that it
overlaps the pin of a symbol, the
two nets are not connected.
Emphasis in text
An optional entry or parameter.
However, in bus specifications, ngdbuild [option_name]
Square brackets [ ]
Braces { }
such as bus[7:0], they are
design_name
required.
A list of items from which you
must choose one or more
lowpwr ={on|off}
lowpwr ={on|off}
Separates items in a list of
choices
Vertical bar
|
IOB #1: Name = QOUT’
IOB #2: Name = CLKIN’
.
.
.
Vertical ellipsis
.
.
.
Repetitive material that has
been omitted
Repetitive material that has
been omitted
allow block block_name loc1
loc2 ... locn;
Horizontal ellipsis . . .
Online Document
The following conventions are used in this document:
Convention
Meaning or Use
Example
See the section “Additional
Resources” for details.
Cross-reference link to a location
in the current document
Blue text
Refer to “Title Formats” in
Chapter 1 for details.
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Conventions
Convention
Red text
Blue, underlined text
Meaning or Use
Example
Cross-reference link to a location See Figure 2-5 in the Virtex-II
in another document
Platform FPGA User Guide.
for the latest speed files.
Hyperlink to a website (URL)
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Preface: About This Guide
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Chapter 1
Introduction
This user guide is required reading for the engineer using or considering using the Xilinx®
Motion Estimation Engine core. The release of this product is given in ZIP file form.
About the Core
The Xilinx Motion Estimation Engine core accepts input parameters on a frame and
macroblock basis and a stream of pixels in macroblock format and generates output
motion vectors, Sum-of-Absolute Difference (SAD) values, and coded block pattern with
best motion vector for each block.
Recommended Design Experience
Although the Motion Estimation Engine core is a fully-verified solution, the challenge
associated with implementing a complete design varies depending on the configuration
and functionality of the application. For best results, previous experience building high-
performance pipelined FPGA designs using Xilinx implementation software and user
constraints files (UCF) is recommended.
Contact your local Xilinx representative for a closer review and estimation for your specific
site requirements.
Additional Core Resources
For detailed information and updates about the Motion Estimation Engine core, see the
document should always be used in conjunction with the following:
•
•
•
The Xilinx Motion Estimation Engine Product Specification (DS648)
JM10.2 H.264 Codec Reference C Code
Technical Support
engineers with expertise using the Motion Estimation Engine core.
Xilinx provides technical support for use of this product as described in this guide.
Xilinx cannot guarantee timing, functionality, or support of this product for designs that do
not follow these guidelines.
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Chapter 1: Introduction
Feedback
Xilinx welcomes comments and suggestions about the Motion Estimation Engine core and
the accompanying documentation. For comments or suggestions about the Motion
include the following information:
•
Product name
•
•
Core version number
Explanation of your comments
For comments or suggestions about this document, submit a WebCase from
•
•
•
•
Document title
Document number
Page number(s) to which your comments refer
Explanation of your comments
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Chapter 2
Installing the H.264 Motion Estimation
Engine Core
This chapter provides instructions for installing the H. 264 Motion Estimation Engine core.
The Motion Estimation Engine fixed netlist is provided under the Xilinx LogiCORE™ Site
defined by the Common License Consortium.
Install the core by performing a manual installation after downloading the core from the
web.
System Requirements
Windows
•
•
Windows® 2000 Professional with Service Pack 2 or greater
Windows XP Professional Service Pack 2 or greater
Software
•
•
•
•
Xilinx ISE™ 9.1i with Service Pack 3
ModelSim® 6.1c SE
MicroSoft Visual C++ 6.0
ActivePerl 5.8.3
Manual Installation
1. Download the IP Update ZIP file from the following location and save it to a
Prompted to enter a login name and password, enter your Xilinx login name and
password.
2. If you are new to Xilinx, click Create an Account and follow the instructions.
3. Three ZIP files are given. Unzip them all into the same directory. They are as follows
(x_y is the release version number, e.g., 1_0).
a. H264_MotionEstimation_verx_y_utils.zip– unzip this first.
b. H.264_MotionEstimation_verx_y_ReleaseNetlists.zip
c. H264_MotionEstimation_verx_y_InputSequences.zip
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Chapter 2: Installing the H.264 Motion Estimation Engine Core
4. Allow the extractor utility you use to overwrite all existing files and maintain the
for an illustration of the correct directory tree structure.
Netlists
The netlists given in this release of the H. 264 Motion Estimation Engine are all in the
\ReleasedNetlistsdirectory. They have been synthesized using Synplify_Pro 8.8.0.4
for Spartan™-3A (S3A), Virtex™-4 (V4), and Virtex-5 (V5) FPGAs:
• MotionEstimation_S3A.edf
• MotionEstimation_V4.edf
• MotionEstimation_V5.edf
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Chapter 3
Designing with the H.264 Motion
Estimation Engine Core
This chapter describes how to include a Motion Estimation Engine core into the next
hierarchy of system architecture.
VHDL Template Files
To help the user design the core into his system, the release provides the following
template files. Neither the core source code nor the HDL libraries have been provided in
source form but in object code format for simulation purposes.
Note: These VHDL template files are for reference only.
1. Instantiation template code:
/HDL/LowCost_MotionEstimation/MotionEstimation/src/MotionEstimation.vho
2. Model Tech VHDL simulator test bench code:
/HDL/LowCost_MotionEstimation/MotionEstimation/Testbench/MotionEstimation_TB.vho
Motion Estimation in the H.264 Encoder
Figure 3-1 shows the Motion Estimator in a typical implementation of an encoder. For
X-Ref Target
-
Figure 3-1
Input
Video
Signal
Coder
Control
Control
Transform/
Scal./Quant
Quant.
Transf.
-
Scaling & Inv.
Transform
Split into
Macroblocks
16 x 16 pixels
Entropy
Coding
De-blocking
Intra-frame
Prediction
Output
Video
Signal
Morion
Compensation
Intra/Inte
Motion
Motion
Estimation
UG453_01_09107
Figure 3-1: H.264 Encoder
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Chapter 3: Designing with the H.264 Motion Estimation Engine Core
Motion estimation requires a definition of a search region and a search scheme to find the
best match (motion vector) within a search region. Rate-Distortion theory also takes into
consideration vectors that may be close together, but not necessarily the best SAD value in
finding the optimal motion vector to choose for entropy coding. Searching within the
search region can be done exhaustively, but the computational overhead is prohibitive.
Thus, a search scheme with seed motion vectors and regions to search are desired. In this
implementation of the motion estimation, 10 seed vectors are provided for each 8x4 block
with eight 8x4 blocks in a 16x16 macroblock. A 4x3 region is searched to the right and
down from the seed vector.
Another difficult part of motion estimation is the localization of memory to allow for easy
access to the search region. In this implementation, a sliding window of eight macroblocks
high and seven macroblocks wide is utilized to keep the external memory transfers
efficient and the bandwidth manageable.
Processing begins with frame parameters being updated each frame and the first
macroblock being sent to the core. Macroblock parameters in the form of seed vectors (80)
are send to the core and the H.264 Motion Estimation Engine processes and produces SADs
and the list of Motion Vectors searched corresponding to the SADs produced. See
H.264 allows for variable block sizes within a macroblock. If through the search process the
best motion vector (minimum SAD) for two blocks is identical, then the block can be
merged to be a larger block, that is, two 8x4 blocks to an 8x8 block. The Variable Block Size
Decision block performs this processing and provides as an output the coded block pattern
for a macroblock and corresponding best motion vectors and SADs.
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Motion Estimation in the H.264 Encoder
X-Ref Target Figure 3-2
-
External
Memory
External Memory Controller
Reference
Frame
Sliding Window
Controller
Frame
Parameters
(112x128)
Current
Macroblock
Variable
Block Size
Decision
FULL PEL
Motion Estimation
Search
Parameters
Out
Macroblock
Parameters
SADs
MVs
UG435 02 091007
Figure 3-2: Motion Estimation Engine Block Diagram
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Chapter 3: Designing with the H.264 Motion Estimation Engine Core
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Chapter 4
Simulating the H. 264 Motion
Estimation Engine Core
This chapter describes a test bench architecture that was created in the ModelSim
environment for simulation of the Motion Estimation Engine core. It does not describe the
verification platform. The simulation described may be used for visualization of the I/O
signals at the periphery of the cores. Although the same precompiled libraries are used in
the verification of the Motion Estimation Engine core, this process is described in detail in
Test Bench Release
For the purposes of running, viewing, and understanding the test bench and the
architectures used, the release provides the following files under
\HDL\LowCost_MotionEstimation\MotionEstimation:
1. Libraries of object (precompiled) source:
/HDL/LowCost_MotionEstimation/MotionEstimation/Testbench/work/
/HDL/LowCost_MotionEstimation/MotionEstimation/Testbench/
memxlib/
/HDL/LowCost_MotionEstimation/MotionEstimation/Testbench/
Sim_tools/
/HDL/LowCost_MotionEstimation/MotionEstimation/Testbench/
unisim/
/HDL/LowCost_MotionEstimation/MotionEstimation/Testbench/
mig_ddr2_s3a_v1_06_a/
2. Test bench stimulus files:
/HDL/LowCost_MotionEstimation/MotionEstimation/Testbench/
stimuli/ (input stimulus files)
3. ModelSim-specific script files:
/HDL/LowCost_MotionEstimation/MotionEstimation/Testbench/
MotionEstimation_prim.do
/HDL/LowCost_MotionEstimation/MotionEstimation/Testbench/
MotionEstimation_core.do
/HDL/LowCost_MotionEstimation/MotionEstimation/Testbench/
MotionEstimation_user.do
/HDL/LowCost_MotionEstimation/MotionEstimation/Testbench/
vsim_gui.bat
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Chapter 4: Simulating the H. 264 Motion Estimation Engine Core
4. Testbench source file:
/HDL/LowCost_MotionEstimation/MotionEstimation/Testbench/
MotionEstimation_TB.vhd
Running the Test Bench
To run the test bench:
1. Double-click on the vsim_gui.batfile. This spawns the ModelSim GUI. Two wave
windows are given. One (MotionEstimation_user)is meant to contain user-
defined signals. The user may use this window to view any internal signals of his
choice. The other (MotionEstimation_core) shows the signals at the periphery of
the core to give the user a feel for the typical interfacing activity required.
If the the following error is received, the user needs to run the refresh command,
vcom -refresh:
#**Error: (vsim-13) Recompile work.vfbc_infrastructure because
C:\opt\Modeltech_6.1f\xilinx_libs_9_2_03i_ip2\.\unisims.vcomponents
has changed.
2. In the ModelSim environment, enter run -all. This runs for about 15 minutes.
The stimulus data for this simulation is held in the
\HDL\LowCost_MotionEstimation\MotionEstimation\Testbench\stimul
idirectory, consisting of several input text files and some expected output text files.
The stimulus data files and expected output files provided contain data extracted from
The simulation generates these output files:
\HDL\LowCost_MotionEstimation\MotionEstimation\Testbench\
MotionEstimation_MVs.out.txt
\HDL\LowCost_MotionEstimation\MotionEstimation\Testbench\
MotionEstimation_ParamsMB.out.txt
\HDL\LowCost_MotionEstimation\MotionEstimation\Testbench\
MotionEstimation_SADs.out.txt
that are directly comparable to the reference expected output.
\HDL\LowCost_MotionEstimation\MotionEstimation\Testbench\
stimuli\MotionEstimation_MVs.out.txt
\HDL\LowCost_MotionEstimation\MotionEstimation\Testbench\
stimuli\MotionEstimation_ParamsMB.out.txt
\HDL\LowCost_MotionEstimation\MotionEstimation\Testbench\
stimuli\MotionEstimation_SADs.out.txt
Note: Xilinx has provided a .vhosource file as an example of how to instantiate the Motion
Estimation Engine core. It is not provided as compilable source code for ModelSim. All simulations
are to be run using the precompiled libraries provided.
expected results are generated from the reference code is described. The generated files
may be used in place of the default simulation files provided with the release, but must
reside in the locations mentioned above during simulation.
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Chapter 5
Verifying the System
This chapter describes the verification environment delivered with the Motion Estimation
Engine core. Ultimately, the system is verified by using long regression tests with several
different resolution input sequences. The output of the hardware from these tests must
exactly match the output given by the reference software that runs with the same stimulus.
Verification Platform Release
For the purposes of running, viewing, and understanding the verification process, the
release provides the following files:
1. Libraries of object (precompiled) source (same as Simulation):
\HDL\LowCost_MotionEstimation\MotionEstimation\Testbench\work\
\HDL\LowCost_MotionEstimation\MotionEstimation\Testbench\
memxlib\
\HDL\LowCost_MotionEstimation\MotionEstimation\Testbench\
Sim_tools\
\HDL\LowCost_MotionEstimation\MotionEstimation\Testbench\
unisim\
\HDL\LowCost_MotionEstimation\MotionEstimation\Testbench\
mig_ddr2_s3a_v1_06_a\
2. Source video sequences:
\InputSequences\
3. Verification scripts:
\Verification\MotionEstimation\MotionEstimation_Verification.pl
\Verification\MotionEstimation\MotionEstimation_Verification_Le
vel1.bat
4. Testbench support module:
\TestBenchSupport\TestBenchSupport.pm
5. Software reference code executables:
\Software\ArchC_Rev3\bin\lencod.exe
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Chapter 5: Verifying the System
Running the Verification Tests
There are five tests that can be run by the user. Each test has varying characteristics,
including varying video formats, parameter settings, etc. A description of the tests is given
listed under item 3 (Verification scripts) above.
Verification is automated down to running the simple editable Level1batch script. It
contains the command line:
perl -I"..\..\TestBenchSupport" MotionEstimation_Verification.pl
[TestLevel][No. Frames][Test#]
TestLevel: 1 (only 1 is available)
No. Frames: between 1 and 10 inclusive
Test#: between 0 and 5 inclusive (0 runs all tests in order from 1 to 5)
Edit the file as desired. Double clicking on the batch file invokes the appropriate test to be
Table 5-1: Verifcation Level Summary
Verification
Level
HW
Reference Executable
Notes
Representation
Level 1
ArchC_rev3\bin\len MTI Simulation
• Reference – uses structurally modified reference code
to generate stimulus and expected Motion Estimation
Engine outputs for verification at Motion Estimation
level.
cod.exe
(precompiled
libraries)
• Unit under test – uses same precompiled object code
libraries as simulation. Uses stimulus files generated
above as simulation input stimulus.
• Detailed – used for debugging.
• RTL simulation, thus, only a couple of frames per
hour, depending on the frame size.
Verification Process (Level 1)
Table 5-1 shows the verification process (Level 1).
X-Ref Target Figure 5-1
-
Modified JM10.2
Reference Software
\ArchC_Rev3\bin\lencod.exe
Expected Output files:
Sitmuli/MotionEstimation...out.txt
START
.yuv Video
Source file
.cfg encoder
config file
END
Compare
HW Stimulus files:
MotionEstimation...in.txt
ModelSim Output file:
MotionEstimation...out.txt
ModelSim/Testbench
UG453_03_091107
Figure 5-1: Verification Process (Level 1)
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Verification Notes
The command line in the batch script invokes the following processes in this order:
1. A DOS window is spawned.
2. A Perl script (MotionEstimation_Verification.pl) is called, which sets up the
required test(s) in order with the appropriate parameters.
This Perl script calls functions in the general-purpose test bench support module that
runs the reference code:
\Software\ArchC_Rev3\bin\lencod.exe
3. The executable uses the video sequences in \InputSequencesas input.
4. This code generates the stimulus files:
\Verification\MotionEstimation\Level1\Testxx\stimuli\MotionEstimation_
...in.txt
…and the expected output reference file:
\Verification\MotionEstimation\Level1\Testxx\
MotionEstimation_...out.x
5. ModelSim is then called in batch mode (no GUI is invoked with the release) which
generates the HW simulation output file:
\Verification\MotionEstimation\Level1\Testxx\
MotionEstimation_...out.txt
6. This file is then compared to the reference output file generated previously and a DOS
report given. The results are also summarized in:
\Verification\MotionEstimation\
EncoderVerification_Summary_Level1.txt
Note: The whole process takes some time. For QCIF (176 x 144), it should take at least a 15
minutes to run two frames on a modern laptop. This time increases for tests that bring extra
complexity into the stimulus generation, for example, formats with increased frame size, main
and high profile settings, etc.
Verification Notes
When test number is set to 0 in the batch script file, all tests are run in sequence from 1 to
10. When doing this, by default, all tests are run regardless of whether they have been run
in the past. If some tests have already been run, but some others have not been run or their
results deleted, then the user may wish to run only the remaining tests. The user can do
this by editing the MotionEstimation_Verification.plscript, commenting out the
line:
$ForceRegenerateAll = "1";
Use ‘#’ to comment).
Also, if you want to take this approach, but rerun one or some tests selectively, delete the
test directory of the test(s) you want to rerun:
MotionEstimation\Level1\testxx
and rerun the script.
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Chapter 5: Verifying the System
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Appendix
Supporting Information
Input Sequences
The files provided as video input source files are:
\InputSequences\city_4cif_30\city_4cif_30.hdr
\InputSequences\city_4cif_30\city_4cif_30.yuv
\InputSequences\football_cif_30\football_cif_30.hdr
\InputSequences\football_cif_30\football_cif_30.yuv
\InputSequences\foreman_qcif_30\foreman_qcif_30.hdr
\InputSequences\foreman_qcif_30\foreman_qcif_30.yuv
\InputSequences\shields_720p_60\shields_720p_60.hdr
\InputSequences\shields_720p_60\shields_720p_60.yuv
\InputSequences\tractor_1088p_30\tractor_1088p_30.hdr
\InputSequences\tractor_1088p_30\tractor_1088p_30.yuv
All sequences are 10 frames long.
Directory Tree Structure
Figure A-1 shows the structure of the Motion Estimation directories after unzipping the
three ZIP files.
Regression Test Descriptions
Table A-1 describes the regression tests used by showing the main digressions from the
default settings. See the generated JM code configuration file for more information.
Table A-1: Regression Test Summary
Test Number
Stream
foreman_qcif_30
football_cif_30
city_4cif_30
Image size
176x144
Test Specifics
Baseline
Details
1
2
3
4
5
1 Reference Frame
1 Reference Frame
1 Reference Frame
1 Reference Frame
1 Reference Frame
352x288
Baseline
704x576
Baseline
shields_720p_60
tractor_1088p_30
1280x720
1920x1080
Baseline
Baseline
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