Pixels to Pictures
Introduction 3 steps 1 pixel Hexadecimal Red-Green-Blue 17 million colors Colors from 0-255 More pixels = better
Introduction 3 steps 1 pixel Hexadecimal Red-Green-Blue 17 million colors Colors from 0-255 More pixels = better
Two parts of a file
Overview Options Pixel positions Pixel values Brightness Brightness example Contrast Contrast example Color Color example ND grad Sharpen Blur Acquiring an image Scanners Scanner specs Resolution Bit depth & DMAX Other Digital cameras Sensor types Digicam pixels Four into one Interpolation More sensors Print size Output What is resolution? Dots vs. pixels Printer resolution Output resolution Print size 2 Enlarging Formats Conclusion Links Software
The Two Parts of an Image File
Different kinds of data
A computer file acts like a container that holds all the data needed for your computer to reconstruct the original image.
The typical image file contains at least two kinds of data:
All the pixels that comprise the image.
Information that describes
how the pixels are arranged.
