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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 we need image segmentation?

As a simple answer I can say: we do segmentation to separate homogeneous area. IN image processing it can be number of pixels with the same intensity in general.

What is image cropped?

Cropping is defining an area of your image canvas that you want to keep and discarding everything outside of that region.


changing size, in other words cutting, you can crop (cut) some part of image

How do you identify the terminals of a 2N2222 BJT from datasheet?

See for example http://www.datasheets360.com/pdf/7308997814572458562

In general, terminals are identified by number and name, with reference to the physical appearance of the transistor package.

What are the disadvantages of RL linear wave shaping circuit compared to RC circuit?

The answer depends upon the frequency range, amplitude and DC component of the signal (wave) being shaped. Sometimes inductors cost more and are physically larger than capacitors.

What are the difference between matlab and c language?

Matlab is a scripting and mathematical language processor for working with mathematical equations.

C is a structured programming language for writing programs. Those programs can contain mathematical equations, but they won't be in quite the same format that you're used to from math class.

Matlab will solve and equation for you. C will allow you to write a program that solves the equation.

C++ is an object-oriented version of C.

matlab and simulink let us design,simulate,implement & test a variety of time varying system

How do you create photoshop image into jpg image?

Just save it in format zou want, you can do that from File - Save , Save as, Save for Web and Devices

What is the latest technology in digital image processing?

There have been many technological advancements over the years. Amazing processing speeds, quality, controls, and print methods are among the advancements we use today.

What is 'smoothing filter' in digital image processing?

smoothing is a noise reduction technique that derives its name from the fact that it employs a simple, fast filtering algorithm that sacrifices noise suppression power in order to preserve the high spatial frequency detail (e.g. sharp edges) in an image. It is explicitly designed to remove noise spikes --- i.e. isolated pixels of exceptionally low or high pixel intensity (e.g. salt and pepper noise) and is, therefore, less effective at removing additive noise (e.g.Gaussian noise) from an image. biometrics@hotmail.com

Differentiate real image from virtual image?

Real images can be obtained on the screen,whereas virtual images can't be obtained on the screen

How to draw capability diagram of synchronous generator using matlab?

The Capability Diagram Normally, the generator meets all the voltage and frequency requirements of the grid. This can be achieved with two closed -loop controllers # Change of excitation current of the rotor or as so called the AVR # change of fuel supply to the turbine or as so called the GOVERNER But in order to prevent damages caused by high temperature or asynchronous operation, several limitations and design criteria are installed to determine the operating zone of the generator These limitations are: # excitation current (rotor current ) limitation # Stator current limitation # load angle( not the power factor) limitation According to these limitations, the designers of the generator draw the capability curve at certain cold air temperature A circle with the radius of the maximum excitation current limitation, another circle with maximum stator current. The point where these two circles intersect is called the "Design point" of the generator.

Classification or types of image processing?

Image Processing classify as three type.

(1) Low level image processing (noise removal, image sharpening, contrast enhancement)

(2) Mid level image processing (segmentation)

(3) High level image processing (analysis based on output of segmentation)

How do you expand the axis limits in MATLAB?

after you plot, type axis([xmin xmax ymin ymax]) and that should do it.