Q 6) Using a TABLE, compare and contrast the features available in these 3 graphics packages:
- Microsoft Paint
- Photoshop
- GIMP

Ans 6)

Q:5) What are the characteristics of the following graphics file formats:
- Bitmap
- GIF
- PNG
- JPEG
- XCF
- PSD
- SVG

Ans 5) The characteristics of the following are;

• Bitmap- Bitmap space management uses four bits inside each data block header to indicate the amount of available space in the data block. Unlike traditional space management with a fixedrelink and unlink threshold, bitmap space managements allow Oracle to compare the actual row space for an INSERT with the actual available space on the data block. This enables better reuse of the available free space especially for objects with rows of highly varying size.
• GIF- The characteristics of GIF result on the one hand from the limited number of colours and on the other hand from the lossless compression.
• PNG- the characteristics of PNG is that it has true Alpha Support with full 8-bit Alpha Channel
• JPEG- The characteristics of JPEG is that the data format is independent from resolution, aspect ratio and image contents.
  The quality of the representation is individually configurable. Decreasing the quality requirements results in a smaller file size. Image contents with a simple structure (monochromatic areas, regular patterns, a small amount of colours, etc.) lead automatically to smaller files. The reduction of the image quality becomes visible by compression artifacts in form of a "raster". The size of these structures is 8 x 8 pixels, which first appear within areas of high complexity. A reliable reproduction of colour information, e.g. for background colours, is not guaranteed at larger compression rates. The compression of monochromatic images (e.g. b/w graphics, technical drawings, etc.) result frequently in clearly perceptible compression artifacts.
• XCF-
• PSD- Position Sensitive Detector (PSD) is a position sensor utilizing the lateral photoelectric effect produced by the non-uniform illumination of a rectifying semiconductor junction. Recently, mostly researches of PSD focus on the linear requirements or response characters of PSD with p-n junction. However, this paper concentrates on a novel characteristics of PSD based on the Schottky junction.
• SVG-Scalable Vector Graphics (SVG) is an XML specification and file format for describing two-dimensional vector graphics, both static and animated. SVG can be purely declarative or may include scripting. Images can contain hyperlinks using outbound simple XLinks

Website: www.google.co.uk

Answer to question four in A2 Applied ICT

Q4) -What is an alpha channel?
-How can this be useful in your coursework project?

Ans4)
-The alpha channel is really a mask, it specifies how the pixel's colors should be merged with another pixel when the two are overlaid, one on top of the other.
-Alpha Channel would be good for our coursework project because it lets you merged to pictures into one picture and it makes it merges the colours together so the picture looks real.

Answer to Question three in A2 Applied ICT

Q3) What does “RGB” have to do with graphic files?

Ans3) Stands for the colors Red-Green-Blue. In web design and design for computer monitors, colors are defined in terms of a combination of these three colors. For example, the RGB abbreviation for the color blue shown below is 0-0-255. In contrast, print designers typically define colors using CMYK.

website: www.artisan-ds.com/glossary_r.php

Answer to Question two in A2 Applied ICT

Q2) What is the difference between VECTOR and BITMAP graphics? Explain both terms.

Ans2) A vector image uses geometrical formulas to represent images. The other way of representing graphical images is through bit-maps in which the image is made up of a pattern of dots. Programs that allow you to create and manipulate vector graphics are called draw programs and programs that manipulate bit-map images are called paint programs.
Vector graphics are more flexible than bit-maps because they can be easily re-sized. In addition, images stored as vectors look better when displayed on high resolution printers and monitors. Bit-map images look the same, regardless of the resolution of the display. Another advantage of a vector graphic is that they often require less memory than bit-maps do.
Note that most output devices including dot matrix printers, laser printers and display monitors are raster devices. This means that all objects, even vector graphics, must be translated into bit-maps before being output.
Vector graphics do not need to be translated in to bit-maps until the last possible minute, after all sizes and resolutions have been specified.

Website: www.colourgen.com/printer_information/vector_bitmap_differences.php

Answers to question one in A2 Applied ICT!!

Q1)What is a Pixel?

Ans1) The pixel is the basic unit of programmable color on a computer display or in a computer image. Think of it as a logical - rather than a physical - unit.

Website: searchsmb.techtarget.com

Questions to do in A2 Applied ICT

1) What is a pixel?

2) What is the difference between VECTOR and BITMAP graphics? Explain both terms.

3) What does “RGB” have to do with graphic files?

4) What is an alpha channel? How can this be useful in your coursework project?

5) What are the characteristics of the following graphics file formats:
- Bitmap
- GIF
- PNG
- JPEG
- XCF
- PSD
- SVG

6) Using a TABLE, compare and contrast the features available in these 3 graphics packages:
- Microsoft Paint
- Photoshop
- GIMP

Using Google Sketch up- Ipod design

This is the Ipod that i created by using Google Sketch up. THere is nine images of my Ipod. It is my Ipod at differnet angles. This is a design an exact copy of a 30GB Ipod which can show movies, Pictures, Games and Music.

I found using Google Sketch up easy, it takes a whie to get use to it but when you do, it is very easy to use.