Digital Image Processing And Some Applications Of It

advertisement
Teacher: Tuğ ba Bozkurt
Course: English II
Spring 2012-2013
Presentation Report:
Digital Image Processing And Some Applications Of
It
Students:
- Mateen Tabbakh
- Shakib Kataya
Digital image processing and some applications of it
“One picture is worth more than ten thousands words”
Anonymous
Introduction:
This report discusses the following points:
-
An introduction to digital image processing science and its definition.
The timeline of it starting by its first uses and ending up with new uses
in our daily life.
-
Some applications, which uses digital image processing.
The mechanism of the process step by step.
Summary of the report explains the importance of digital image
processing currently.
Definition of digital image processing: it’s the use of
computer algorithms to perform image processing on digital images. As a
subcategory or field of digital signal processing, digital image processing has
many advantages over analog image processing. It allows a much wider
range of algorithms to be applied to the input data and can avoid problems
such as the build-up of noise and signal distortion during processing. Since
images are defined over two dimensions (perhaps more) digital image
processing may be modeled in the form of multidimensional systems.
Timeline: Many of the techniques of digital image processing, or digital
picture processing as it often was called, were developed in the 1960s at
the Jet Propulsion Laboratory, Massachusetts Institute of Technology, Bell
Laboratories, University of Maryland, and a few other research facilities, with
application to satellite imagery, wire-photo standards conversion, medical
imaging, videophone, character recognition, and photograph
enhancement. The cost of processing was fairly high, however, with the
computing equipment of that era. That changed in the 1970s, when digital
image processing proliferated as cheaper computers and dedicated hardware
became available. Images then could be processed in real time, for some
dedicated problems such as television standards conversion. As generalpurpose computers became faster, they started to take over the role of
dedicated hardware for all but the most specialized and computer-intensive
operations.
Some uses of it:
- Old uses include Wire-Photos (sending photos through cables), Satellite
Analyzing, and some Military Uses.
- New uses include nearly every part of our life like Medical visualization,
Law investigations, Face recognition teqniques, and RADAR*.
RADAR: RAdio Detection And Ranging.
Mechanism: The mechanism of working is divided into steps as followed:
1- Getting photos: the first step in the digital image processing operation
starts with getting the image or images that we want to analyze, it
might be a face image, product, fingerprint, place, or an out space
photo as shown in the picture. Etc. it is called right now as the input
image
2- Converting to data: after we got the image a program or a process will
work on transferring that input into a numeric data that can be read by
the computer
3- Splitting into layers: the transferred numbers now will be divided into
layers according to the algorithm we want to use or the algorithm that
the situation needs, it might be divided according to pixel location or
according to colors sections or any other method
4- Arranging layers into tables: layers will be converted to tables in this
part and each table has a headline to be used in the up coming
processes
5- Analyzing numbers: an analyzing process will be now optimized on the
given numbers deciding the right equation to perform on the data trying
to get the best results
6- Applying equations: a simple and uncomplicated part, depends on pure
math, numbers analyzing and converting data and numbers into useful
information and answers
7- Studying results: it’s done right now, we got the answers we needed by
following an easy process starting with a single earth photo that has
been taken from the out space, ending up with a weather broadcast for
the next couple days as shown in our example
Summary: it appears that our daily life sometimes depends basically on
the “digital image processing applications”, and it’s getting more common day
by day because it can be trusted, easy to use, and effective.
It started with two or three fields in the 1960s (Connections, Military..etc.) To
become a major science which is used widely in a lot of companies, facilities,
computers, and even mobile phones.
Download