Digital video, Computer Graphics

Assignment Help:

Digital Video: Digital video is a form of video recording system which works through using a digital, quite than analog, representation of the video signal. It generic means, not to be confused along with the identity DV that is an exact type of digital video. Digital video is most frequently recorded on tape and then distributed on optical discs, generally DVDs. There are exceptions, as camcorders which record directly to DVDs Digital-8 camcorders that encode digital video upon conventional analog tapes and the most current JVC Everio G camcorders that record digital video on hard disks.

Digital video is not as regular analogue video used through daily televisions. To know how digital video works this is best to believe of this as a sequence of non-interlaced images, all of that is a two-dimensional frame of picture parts or pixels. Current analogue television systems as:

  • The NTSC that is National Television Standards Committee, utilized in North America and Japan
  • PAL that is Phase Alternate Line, utilized in Western Europe, employ line interlacing. Systems which use line interlacing alternately scan odd and even lines of the video that can produce images while analogue video is digitized.

In matter of Digital video, there are two terms related with all pixels, luminance and chrominance. A luminance is a value i.e. proportional to the pixel's intensity. The chrominance is a value which represents the colour of the pixel and a number of representations are there to decide from. Any colour can be synthesized through a suitable mixture of three correctly selected primary colours. So RGB that is Red, Green and Blue, are usually selected for the primary colours.

While an analogue signal is digitized, this is quantized. Quantization is the process through such a continuous range of values from an input signal is divided into non- overlapping discrete ranges and all range allocated a unique symbol. A digitized monochrome photograph may, for illustration, contain merely 256 various kinds of pixel. That image would be as to have a pixel depth of 8 bits. The higher quality image may be quantized permitting 24 bits per pixel.


Related Discussions:- Digital video

Plane equation - spatial orientation of the surface element, Plane equation...

Plane equation - spatial orientation of the Surface Element For some of Plane equation procedures, we have information regarding the spatial orientation of the individual surf

Projections - viewing transformation, Projections - Viewing Transformation ...

Projections - Viewing Transformation Specified 3-D object in a space, Projection can be explained as a mapping of 3-D object into 2-D viewing screen. Now, 2-D screen is termed

Functioning of hardcopy devices and output primitives, Functioning of hardc...

Functioning of hardcopy devices and Output primitives 1.  Functioning of hardcopy devices-laser printers and dot matrix printers, plotters.  2.  Output primitives: Graphics

Parametric continuity conditions , Parametric Continuity Conditions   To e...

Parametric Continuity Conditions   To ensure a smooth transitions from one section of a piecewise parametric curve to the next, we can impose various continuity conditions at the

Light pen - input and output devices, Light Pen - input and output devices ...

Light Pen - input and output devices It is a pointing device. This has a light sensitive tip that is excited while the light is emitted and an illuminated point upon the disp

Multimedia and its features, Multimedia as the name suggests MULTI and MEDI...

Multimedia as the name suggests MULTI and MEDIA utilizes some media for example: text, graphics, audio, video and also animation, to convey information. Multimedia also consider to

Applications of computer graphics, Applications of Computer Graphics Wh...

Applications of Computer Graphics When you begin using a computer and open an application, you simply click on a graphics object, called icon. When you watch TV, several times

Problem with interpolated shading - polygon rendering, Problem with Interpo...

Problem with Interpolated Shading There are several more shading models that intermediate in complication among Gouraud and Phong shading, linking the liner interpolation of t

Character generation, What is character generation and explain it''s two me...

What is character generation and explain it''s two method: 1> Bitmap method 2> outline method.

Horizontal retrace - hardware primitives, Horizontal Retrace - Hardware Pri...

Horizontal Retrace - Hardware Primitives Horizontal retrace refers to the time an electron beam takes to traverse a scan line.Vertical retrace means the time taken by the elect

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd