How Does 3D Work?

What is 3D?

Bethany SmithNC State University

Is this 3-D?

What about this one?What about this one?

Is this one 3-D?Is this one 3-D?

What makes an image 3-D?

What does 3-D stand for?

How many dimensions were the previous illustrations?

What makes an object 3-D?

2-D

X

Y

3-D

X

Y

Z

How do 3-D Images work?

How does depth work?

• Using your eyes to combine the two images they see

3-D images can only work when each eye sees a slightly altered

image

How do we get our eyes to see different images?

How do the glasses work?

• Separate the images by filtering• Filter by color– Red– Blue

Making your own 3-D glasses

• Supply list– Cardboard for glasses– Red and Blue cellophane– Scissors– Tape

How do the images work?

• Two images– One for the left eye - red– One for the right eye - blue

• Exactly the same as the glasses!!!• The blue side makes the blue disappear - so all

you see is the red image in your right eye and Vice Versa

How 3-D images are Made

Take 1 Stereopair

Color the left red and the right blue

Combine the two together