<< Chapter < Page
  Digital signal processing - dsp     Page 8 / 21
Chapter >> Page >

The quality of the transform process

The remaining nine lines indicate something about the quality of the forward and inverse transforms in terms of the ability of the inverse transform toreplicate the original spatial surface. These lines also indicate something about the correctness of the overall scaling from original input to finaloutput.

Matching pairs of values

Each of the last nine lines contains a pair of values. The first value is a sample from the original spatial surface. The second value is a sample from thecorresponding location on the spatial surface produced by performing an inverse transform on the wavenumber spectrum. The two values in each pair of valuesshould match. If they match, this indicates the probability of a valid result.

(Note however that this is a very small sampling of the values that make up the original and replicated spatial data and problems could arise inareas that are not included in this small sample.)

The match is very good in the example shown above. This example is from Case #12.

How to use the program named ImgMod31

Usage information for the program is shown in Figure 3 .

Figure 3. How to use the program named ImgMod31.

Usage:

java ImgMod31 CaseNumber DisplayType CaseNumber ranges from 0 to 13 inclusive.DisplayType ranges from 0 to 2 inclusive.If a case number is not provided, Case 2 will be run by default.If a display type is not provided, display type 1 will be used by default.

A description of each case is provided by the comments in this program. In addition, each case will be discussed in detail in this module.

See ImgMod29 in the earlier module titled Plotting 3D Surfaces using Java for a definition of DisplayType .

You can terminate the program by clicking on the close button on any of the display frames produced by the program.

Program code for ImgMod31

The beginning of the class and the beginning of the main method is shown in Listing 5 .

Listing 5. Beginning of the class named ImgMod31.
class ImgMod31{public static void main(String[] args){int switchCase = 2;//default int displayType = 1;//defaultif(args.length == 1){ switchCase = Integer.parseInt(args[0]); }else if(args.length == 2){switchCase = Integer.parseInt(args[0]);displayType = Integer.parseInt(args[1]);}else{ System.out.println("Usage: java ImgMod31 "+ "CaseNumber DisplayType"); System.out.println("CaseNumber from 0 to 13 inclusive."); System.out.println("DisplayType from 0 to 2 inclusive."); System.out.println("Running case "+ switchCase + " by default."); System.out.println("Running DisplayType "+ displayType + " by default."); }//end else

The code in Listing 5 gets the input parameters and uses them to set the case and the display format. A default case and a default display format are used ifthis information is not provided by the user.

Create and save the test surface

Listing 6 calls the method named getSpatialData to create a test surface that matches the specified case. This surface will be used fortesting the transform process.

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
Privacy Information Security Software Version 1.1a
Good
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Digital signal processing - dsp. OpenStax CNX. Jan 06, 2016 Download for free at https://legacy.cnx.org/content/col11642/1.38
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Digital signal processing - dsp' conversation and receive update notifications?

Ask