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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.

Introduction

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 } } } {}
where:
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

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
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
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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