COMPUTER GRAPHICS

UNIT I INTRODUCTION

Survey of computer graphics, Overview of graphics systems Video display devices, Raster scan systems, Random scan systems, Graphics monitors and Workstations, Input devices, Hard copy Devices, Graphics Software; Output primitives points and lines, line drawing algorithms, loading the frame buffer, line function; circle and ellipse generating algorithms; Pixel addressing and object geometry, filled area primitives.

UNIT II TWO DIMENSIONAL GRAPHICS

Two dimensional geometric transformations Matrix representations and homogeneous coordinates, composite transformations; Two dimensional viewing viewing pipeline, viewing coordinate reference frame; widow-to-viewport coordinate transformation, Two dimensional viewing functions; clipping operations point, line, and polygon clipping algorithms.

UNIT III THREE DIMENSIONAL GRAPHICS

Three dimensional concepts; Three dimensional object representations Polygon surfaces- Polygon tables- Plane equations - Polygon meshes; Curved Lines and surfaces, Quadratic surfaces; Blobby objects; Spline representations Bezier curves and surfaces -B-Spline curves and surfaces. TRANSFORMATION AND VIEWING: Three dimensional geometric and modeling transformations Translation, Rotation, Scaling, composite transformations; Three dimensional viewing viewing pipeline, viewing coordinates, Projections, Clipping; Visible surface detection methods.

UNIT IV ILLUMINATION AND COLOUR MODELS

Light sources - basic illumination models halftone patterns and dithering techniques; Properties of light - Standard primaries and chromaticity diagram; Intuitive colour concepts - RGB colour model - YIQ colour model - CMY colour model - HSV colour model - HLS colour model; Colour selection.

UNIT V ANIMATIONS & REALISM

ANIMATION GRAPHICS: Design of Animation sequences animation function raster animation key frame systems motion specification morphing tweening. COMPUTER GRAPHICS REALISM: Tiling the plane Recursively defined curves Koch curves C curves Dragons space filling curves fractals Grammar based models fractals turtle graphics ray tracing.

Dettagli