Computer Graphics Flashcards
Images on a computer screen are made of:
A matrix of Pixels
What are pixels?
Tiny dots of black/white or color arranged in rows.
The pixels are somsmall that to the human eye they appear:
To make a continous picture.
Users control the patterns of pixels?
No; softwares creates the patterns automatically in response to commands.
What is bit depth?
(color depth) the number of bits devoted to each pixel.
The higher the bits depth…
the more colors that can be displayed.
1-bit depth…
2 colors
2-bit depth…
4 colors
4-bit depth…
16 colors
6-bit depth…
64 colors
8-bit depth…
256 colors
24-bit depth…
16,777,216
What is resolution?
The density of pixels in an image. Measurement of height x width at a certain pixel density.
Unit of measurement for digital images and screen images.
ppi (pixels per inch)
Unit of measurement for prints.
dpi (dots per inch)
