theory of projection
Post on 07-May-2015
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THEORY OF
PROJECTION
WHO HAS THE EYE?
SOMETHING MAJESTIC
SOMETHING MESMERISING
SOMETHING SURPRISING
SOMETHING SHOCKING
SOMETHING TRANQUILLING
SOMETHING TERRIFYING
SOMETHING ELSE
SOMETHING ELSE
SOMETHING ELSE
SOMETHING ELSE
SOMETHING ELSE
UNDERSTANDING OBJECT & IMAGE
UNDERSTANDING OBJECT & IMAGE
DIFFERENCE BTW OBJECT AND IMAGE
PARAMETER OBJECT IMAGEINFORMATION MULTI SINGLE
VIEWPOINT CHANGED CANNOT CHANGE
CHANGE WITH TIME
YES NO
DIMENSIONS 3D 2D
OWNERSHIP NO YES
SIZE DOES MATTER
DIFFERENTIATE
DIFFERENTIATE
DIFFERENTIATE
THE 2D – 3D PROBLEM
2D – Engineers3D - Customers
THE 2D – 3D PROBLEM
2D – Engineers3D - Customers
THE 2D – 3D PROBLEM
2D – Engineers3D - Customers
THE 2D – 3D PROBLEM
2D – Engineers3D - Customers
THE 2D – 3D PROBLEM
2D – Engineers3D - Customers
EXPLAINING PROJECTION
OBJECT IMAGE
PROJECTION
OBSERVER
EXPLAINING PROJECTION
PROJECTION
IS THE PROCESS OF OBTAINING
_______ __________________________
FROM
_______ __________________________
Common Elements of a Projection System
• Center /Direction of Projection/Station Point/Observers Eye
• Projection Plane/Picture Plane
• Object(s) to be projected
• Projectors/Visual Rays/Lines of Sight
Classification of Projection
TYPES OF PROJECTION
STATION POINTOBJECTPLANE OF PROJECTIONPROJECTORS
TYPE DISTANCE BTW SP & PP PROJECTORS
PERSPECTIVE FINITE RADIATING FROM STATION POINT & INCLINED TO PROJECTION PLANE
PARALLEL INFINITE PARALLEL TO EACH OTHER & PERPENDICULAR TO THE PLANE OF PROJECTION
TYPES OF PROJECTION
TYPES OF PROJECTION
WHAT PROJECTION IS THIS?
ISOMETRIC & ORTHOGRAPHIC PROJECTION
ORTHOGRAPHIC ISOMETRICMULTI VIEW SINGLE VIEWSHOWS THE OBJECT AS 3 DIFFERENT IMAGES AS VIEWED FROM FRONT,TOP & BACK
SHOWS THE OBJECT AS ONE IMAGE WITH ALL THREE SIDES WITH ALL AXIS EQUALLY INCLINED
CAN SHOW 2DIMENSIONS ONLY CAN SHOW 3DIMENSIONS ONLY
WHAT SHALL WE DO?
ISOMETRIC TO ORTHOGRAPHIC
ORTHOGRAPHIC TO ISOMETRIC
PRACTICE ISO TO ORTHO #1 FRONT VIEW
SIDE VIEW
TOP VIEW
PRACTICE ISO TO ORTHO #2
PRACTICE ISO TO ORTHO #3
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