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MATLAB (Matrix Laboratory)

MATLAB is a software and a package to implement signal processing. Using this tool one can create and test various signals & systems. These signals and systems can be tested for various parameters and operations. The real time simulation of signals, images, audio and video are performed using MATLAB. Various programs, syntax, applications and uses of MATLAB and signal processing can be discussed in this category. As the need for signal processing is increasing day by day, there is a need for separate category.

570 Questions

Why you are gotng to image compression?

image compression makes the image smaller in order to fit a desired size. you literally compress the image and make it smaller in bit size.

How do you use nested for loop on the image in matlab?

Please ask clearly what you want to do with the image and explain why a nested for-loop is necessary.

How can i mesure Complex degree of coherence using matlab?

Cxy=Pxy / sqrt(Pxx*Pyy)

For signals X and Y:

First compute power spectral density of X (Pxx), Y (Pxx), and cross PSD for X against Y (Pxy);

can be accomplished by

[Pxx,F]=CPSD(X,X)

[Pyy,F]=CPSD(Y,Y)

[Pxy,F]=CPSD(X,Y)

Cxy=Pxy / sqrt(Pxx*Pyy)

Cxy is complex coherence

What are the advantages of Matlab?

Advantages:

- It's very easy for a beginner in computer programming

- It comes with well-written manuals.

- Large user community, sharing free codes.

How do you simulate handoff in matlab?

i need materials too thta how simulate inter system handover between wcdma to gsm.......

How can you convert digital signal to analog signal by using matlab simulink?

Simulink provides a Simulink model for digital to analog converter. we can use such blocks or models for this purpose.
You can use xPC target built in Simulink, but you will have buy a xPC card to install on your target computer and run it in host computer.

Can you use matlab in real time simulation?

yes. Using the real-time target, where target is my PC (self-targeting). For that you have to choose Windows real target file in your simulink preferences, set external mode from popup menu in the main panel, then build model, then connect to the target and push run button. Before that you must set fixed-step solver, and place real-time clock block in the diagram.

What is the purpose of frange in dtft.m file in matlab?

Ans:The purpose of frange in DTFT.m is to set the range of frequency in order to observe spectra of the signal

What is the shortcut to run a file in Matlab?

Press F5 after typing the program. It runs the program.

What is meant by saliency in image processing?

Saliency is an attempt to determine which regions of an image are the most conspicuous. It's a loosely bio-inspired concept - when processing a new scene a low-level process drives rapid eye movement (called saccades) as the brain seeks to determine what it needs the eyes to focus on first. This calculation is performed by the regions V1-V4 of the primary visual cortex.

What reputable image library sites are there?

The main image library site is called Shutter Stock. There are tons of images from different photographers on there. You can even sell your images if people want them.

How do you modulate in matlab without using matlab tools?

You would have to write your own code for a modulation (Matlab has a convolution function not in the tools), otherwise you can use its built in function in the signal processing toolbox.

What is image acquisition in digital image processing?

It is the creation of digital image, typically from a physical scene. The term assumed to imply or include processing,compression, storage, printing, and display of such image.

How do you solve differential equation by MATLAB?

At first, you have used a command for variable a function. Example as....

f(x)=x^4+5*x-7

(i) To differentiate the equation

(ii) n derivative of the equation

SOLUTION:

(i)

MATLAB CODE:

syms x

f=inline('x^4+5*x-7','x')%f=inline('function','variable')

diff(f(x))

the above code will write in M-file and run, then you will get Answer.

OR

BY USING COMMAND WINDOW:

>> syms x

>> f=inline('x^4+5*x-7','x')

f =

Inline function:

f(x) = x^4+5*x-7

>> diff(f(x))

ans =

4*x^3 + 5

(ii)

solution

diff(function,n)% here diff is command

>> syms x

>> diff(x^4+5*x-7,3)

ans =

24*x

Why is still image effective?

still image is effective as it helps intensify thatparticular moment

How do you change a bitmap image to a JPEG image?

if u hav windows, right click on the image and click on open with then, click on paint

On paint, click on file, save as, and sava the image in jpeg format on save as type, which is usually below the file name.

Is there matlab compiler in matlab?

Matlab comes with a free C compiler. It also has a script compiler in some versions. In addition you can use many commercial compilers if you have one.

See (link moved to link section)

How do you plot Dirac function in MATLAB?

To plot each value of a vector as a dirac impulse, try stem instead of plot.

When you invert an image what is the image value?

opposite the valur of the image before you inverted it. ex - inverted = +, black inverted = white. tip refer to color wheel foe color inversions.. outinverted = in, et el.