IP - How are images represented? 8 bits/pixel 0 255 Color...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
How are images represented? 8 bits/pixel 0 255
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Color images
Background image of page 2
A Simple model of image formation The scene is illuminated by a single source. The scene reflects radiation towards the camera. The camera senses the light (i.e., through solid state cells for CCD cameras)
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
CCD (Charged-Coupled Device) cameras Tiny solid state cells convert light energy into electric charge which is then digitized (A/D conversion).
Background image of page 4
Image file formats Many image formats adhere to the following simple model: Header Data (line by line, no breaks between lines)
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image file formats (cont.) Header contains at least: A signature or “magic number” (i.e., a short sequence of bytes for identifying the file format). The width and height of the image.
Background image of page 6
Common image file formats PGM (Portable Gray Map) PNG (Portable Network Graphics) GIF (Graphic Interchange Format) - JPEG (Joint Photographic Experts Group) TIFF (Tagged Image File Format) FITS (Flexible Image Transport System)
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
PGM format A popular format for grayscale images (8 bits/pixel) Closely-related formats are: PBM (Portable Bitmap), for binary images (1 bit/pixel)
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/27/2012 for the course CS 251 taught by Professor Staff during the Fall '08 term at Purdue University-West Lafayette.

Page1 / 21

IP - How are images represented? 8 bits/pixel 0 255 Color...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online