Chapter 2

• It is pictographically presented. It is any sketch, design, drawing or visual image displayed on any surfaces like papers, canvas, walls or

  computer monitor

  GRAPHICS
• Graphics is from the Greek word “graphikos” which

  means ”written”.
• Computer graphics are any image media crafted through computer hardware and software. It can either be two- or three-

  dimensional.
• what is the 4 elements of computer graphics?

  Image

  Model

  Rendering

  Animation
• Image – it is the visual representation of an

  object.
• Models – it is the 3D representation of any object.
• Rendering – it is the process of generating an

  image from a 2D or 3D model through computer

  programs.
• Animation - it is a way adding creative illusive

  actions through successive images.
• The first enhanced computer only supported 16 to

  256 colors.
• what are 2 types of computer graphics?

  Raster

  Vector
• These are digital images made up of countless tiny

  squares called pixels (also known as bitmap).

  RASTER GRAPHICS
• Pixel is a shortened term for “Picture Element”

  which means picture (pix) and element (el).
• It is the smallest unit of any digital image.

  PIXEL
• It use mathematical formulae to draw lines

  and curves to create the image.

  VECTOR GRAPHICS
• It has smaller files sizes and are easier to

  modify or edit.

  VECTOR GRAPHICS
• Anti-aliasing it is a software-based approach that aims to smoothens the jagged appearance of the image by blending the edge of the pixel with the adjacent colors.
• 4 applications of computer graphics ?

  USER INTERFACE

  DISPLAY INFORMATION

  DESIGN

  SIMULATION
• User Interface – it is useful in

  video games, digital art and

  virtual reality.
• Display information – it is used

  in computational biology,

  computational physics,

  information of graphics and

  scientific visualization.
• Design – it is used in graphic

  design, computer-aided design

  and web design
• Simulation – It imitates the

  process. it is also useful in

  education, information

  visualization and computer

  simulation.
• It is an interactive

  way of presenting

  information using

  audio, video, and

  any animation.

  MULTIMEDIA
• Text - This refers to the characters used for

  creating words. This has various kinds of

  fonts and sizes to use depending on what

  would be suitable for presenting the

  information.
• BASIC ELEMENTS OF

  MULTIMEDIA
• Graphic – Refers to any non-text

  information like images, drawings, or

  charts. It is best to use as an

  alternative or as a supplement to the

  text. It makes the presentation more

  effective if combined with text and

  attractive at the same time.
• Video – This refers to

  moving pictographic

  images accompanied by

  sounds.
• Animation – These are moving

  images. It was created through a

  series of graphics that portray

  actions displayed in sequence to

  create illusions of motion.
• Audio – It refers to any

  music or sound effects.

  It can be analog

  (recorded) and digital

  sounds (actual).
• TYPES OF MULTIMEDIA PRESENTATION ?

  Linear

  Non linear
• The active content of this

  presentation often progresses without

  the control for navigation of the user.

  LINEAR PRESENTATION
• It is also known as interactive

  multimedia. It offers interactivity to the users

  where they can control the progress

  of the presentation.

  NON-LINEAR PRESENTATION
• FORMS OF MULTIMEDIA?

  ONLINE

  OFFLINE

  HYBRID
• Hypermedia is a non-linear multimedia presentation as it uses hypertext that allows the reader to move from one path to another.
• ONLINE

  These are the media types that need to communicate with distant resources or distant users.
• OFFLINE

  These media are known to be a self-contained product where the users don‘t need the internet or any online connection. This can stand and progress on its own and does not communicate with anything outside its designed environment.
• HYBRID

  This media has the elements of both on- and offline products. Common examples are

  computer games.
• HCI is a multidisciplinary field of study focusing on the

  design of computer technology and, in particular, the interaction between humans (the users) and computers.
• Why HCI is important?

  HCI is very important because it will be fundamental to make products more successful, safe, useful and functional.

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• ―As interaction designers, we need to remember that it is not about the interface, it‘s about

  what people want to do. To come up with great designs, you need to know who those people

  are and what they are really trying to accomplish.‖

  ~ Cordell Ratzlaff, Designing Interactions, 2007.

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• YEAR OF QWERTY Christopher Latham Sholes

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