COMPUTER GRAPHICS
- 1. COMPUTER GRAPHICS F.LAVANYA.,M.Phil Department Of Computer Science
- 2. CG,Formal Definition Computer Graphics is generally concerned with all aspects of using a computer to generate images.
- 3. DEFINITION OF COMPUTER GRAPHICS Computer Graphics Interactive Computer Graphics
- 4. BASIC ELEMENTS OF CG Many computer graphics applications involve: Modelling a) Choice of representation Rendering a) geometry, visibility b) mapping from ‘real world’ to ‘image space’ c) Simulation of interaction of light with objects I. Reflection, transmission, emission, refraction,defraction and interference. Animation Interaction
- 6. COMPUTER GRAPHICS FOR MOVIES The entertainment industry plays many important roles in the field of computer graphics. Leaders in quality and artistry Not slaves to conceptual purity Big budgets and tight schedules Constant remainder that there is more to CG than technology
- 7. COMPUTER GRAPHICS FOR MOVIES • Hollywood has invested much on to computer graphics. • The state-of-the-art special effects are amazing. More and more of these images exist only within the memory of a computer. • In addition to those big budget mega productions,there are music videos, and spinning logos on the 6 o'clock news. • Computer graphics is now as much a part of the entertainment industry as stunt men and makeup.
- 8. COMPUTER GRAPHICS FOR GAMES Impacts from game’s industry Focus on interactivity Cost-effective solutions Avoiding computation and other tricks Games drive the baseline Games are an important driving force In computer graphics.
- 9. CG FOR MEDICAL IMAGING Influence from medical applications 1. New data representations and modalities 2. Drive issues of precision and correctness 3. Focus on presentation and interpretation of data 4. Construction of models from acquired data
- 10. COMPUTER AIDED DESIGN CAD has had the follow impact on computer graphics. Drives the high-end of the hardware market Integration of computing and display resources Reduced design cycles
- 11. GRAPHICAL USER INTERFACES (GUIS) Computer graphics is an integral part of every day computing. Nowhere is this fact more evident than the modern computer interface design.
- 12. MORE ABOUT CG APPLICATIONS 1. Business Graphics. 2. Art. 3. Animation. 4.Advertising, Entertainmnt. 5. Image processing. 6. Command and Control. 7. Process simulation and verification. 8. Geographical data bases. 9. Virtual reality. 10. Office automation and electronic publishing.
- 13. THE IMAGE-GENERATING PROCESS AND GRAPHICS HARDWARE The actual form of an image depends on the type of display hardware being used in addition to the primitives and attributes used in picture description. The varying intensity of the image elements can take several forms. Simplest form - an image element can be black or white the image is true monochrome Subtly in the range of intensities can be obtained by shading
- 14. Introduction to Graphical Hardware Display Technologies Cathode Ray Tubes (CRTs) • CRTs are the most common display device today • Evacuated glass bottle (last remaining vacuum tube) • Heating element (filament) • Electrons attracted to focusing anode cylinder • Vertical and Horizontal deflection plates • Beam strikes phosphor coating on front of tube
- 16. Animation 1. Change of shape as shown in fig: 2. Change in size as shown in fig:
- 17. Animation 3. Change in color as shown in fig: 4. Change in structure as shown in fig:
- 18. ANIMATION 5. Change in angle as shown in fig:
- 20. MORPHING
- 21. WRAPPING Wrapping function is similar to morphing function. It distorts only the initial images so that it matches with final images and no fade occurs in this function.
- 22. TWEENING
- 23. PANNING
- 24. ZOOMING
- 25. Fractals