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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

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
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
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.
Bharti
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
Daniel
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
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
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
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
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.
Tarell
what is the actual application of fullerenes nowadays?
Damian
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.
Tarell
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.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
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.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
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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Source:  OpenStax, Digital signal processing - dsp. OpenStax CNX. Jan 06, 2016 Download for free at https://legacy.cnx.org/content/col11642/1.38
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