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This module describes the design flow of a motion detection system based video surveillance system based on the DM6437 Digital Video Development Platform (DVDP). The system will be able to identify and record only “interesting” video frames containing motion.


Continuous-scene monitoring applications, such as ATM booths, parking lots or traffic monitoring systems, generate large volumes of data. Recording and archiving such volumes of data is a real problem, and one way to solve this is to reduce the size of the data stream right at the source.

In addition to traditional methods for compressing individual video images, we could identify and record only “interesting” video images, such as those images with significant amounts of motion in the field of view. That could significantly help reduce the data rates for surveillance-specific applications.

In this section, we’ll illustrate the design flow of a motion detection system based video surveillance system. The system will be able to identify and record only “interesting” video frames containing motion.

The development process will follow the following three steps:

  1. Functional Requirements
  2. System modeling and simulation
  3. Code generation and implementation

Hardware and software requirements

This laboratory was originally developed using the following hardware and software:

  • MATLAB® R2008a
  • Code Composer Studio (CCS) v3.3
  • Texas Instruments DM6437 hardware.

Video surveillance

In this session we will show how to create the line detection model, and how it can be integrated in Simulation and Real-Time Implementations.

Figure 1: The Motion Detection Process

The motion energy estimation

The Motion Energy estimation is based on the calculation of the Sum of Absolute Differences (SAD)” according to the following equation:

SAD = i j I k i , j I k 1 i , j size 12{ ital "SAD"= Sum cSub { size 8{i} } { Sum cSub { size 8{j} } { lline I rSub { size 8{k} } left (i,j right ) - I rSub { size 8{k - 1} } left (i,j right ) rline } } } {}
I k i , j size 12{I rSub { size 8{k} } left (i,j right )} {} - Current Frame
I k 1 i , j size 12{I rSub { size 8{k - 1} } left (i,j right )} {} - Previous Frame

Functional description

The Video Surveillance system block diagram is shown in Figure 2. The source video is displayed and played back through the system. This incoming video stream is processed by a subsystem that estimates the motion within the scene and captures the interesting video frames. The system can display either the recorded video frame or the Absolute Differences (AD) image.

The user can configure the motion energy threshold value and select which image will be displayed (Display Control). The system outputs include, besides the displayed image, the following features:

  • A graph of the motion energy as a function of time. This graph displays the threshold value as well.
  • The Frame count of the recorded image
  • An output signal triggered by motion detection (Trigger)

While the generated code is running on the target, a host side Simulink® model simultaneously sends video frames to the target via TCP/IP protocol using TCP/IP Blocks from Instrument Control Toolbox™. The target receives video frames sent by the host side Simulink model, computes the sum of the absolute value of differences (SAD) between successive video frames, and returns an estimate of motion. When the motion estimate value exceeds a threshold, the target increments a counter and sends the corresponding frame back to the host.

Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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