Computer Graphics Concepts and Techniques

The video tutorial explains how the human brain interprets 2D images as 3D objects and introduces the basics of 3D graphics, focusing on ray tracing. It discusses the differences between image-order and object-order rendering, and explains orthographic and perspective projections. The tutorial also covers matrix transformations necessary for rendering 3D graphics, culminating in the construction of a perspective projection matrix.

How does the brain interpret 3D objects from 2D images?

• By using depth perception

• By converting 2D images into 3D models

• By using neural circuits to interpret 2D images

• By relying on external devices

What is the basic unit used to create 3D objects in computer graphics?

• Squares

• Hexagons

• Circles

• Triangles

What is the primary concept behind ray tracing?

• Generating random light patterns

• Using light rays to create shadows

• Simulating light rays bouncing off objects

• Projecting light rays onto a 2D plane

Which rendering technique is faster and commonly used in real-time applications?

• CPU-based rendering

• Object-order rendering

• Image-order rendering

• Ray tracing

What is the purpose of an orthographic projection?

• To transform a view volume into a canonical view volume

• To create a 3D view from a 2D image

• To enhance color depth

• To apply perspective to objects

What shape is used in perspective projection to apply perspective to objects?

• Square frustum

• Sphere

• Pyramid

• Cube

How are homogeneous coordinates used in perspective transformation?

• To enhance color accuracy

• To allow division by the z component

• To fix the w component to 1

• To simplify matrix calculations

What is the advantage of having non-linear z depth values?

• Better color accuracy

• Simplified calculations

• Increased rendering speed

• Higher precision at the near plane

What is the final form of the perspective projection matrix used for?

• To enhance color depth

• To create 2D images

• To simplify rendering calculations

• To transform objects into a canonical view volume