1 Introduction to Computer Graphics – CGS-1586C Spring Quarter 2011 Instructor: Amanda Dickinson Tues/Thurs from 6:00PM to 7:50 PM

2 Overview for Today  Raster vs Vector  Searching and Sampling  Creative Commons  Stock Photography  Classroom Task  Homework

3 Raster vs Vector  Raster or bitmap Pixels and grids  Used with photography and scanned pictures, good for photo manipulation  Not good for scaling  Vector Math and algorithms  Vectors popular with logos and symbols  Easily scalable to any size  Can edit different parts of piece easily

4 Raster vs Vector

5 Raster Examples

6 Vector Examples

7 Raster vs Vector  You can convert vector graphics to raster graphics  You can also convert raster graphics to vector, but it takes a bit more time

8 Raster vs Vector  Example extensions for raster: Jpg, jpeg, gif, png, tiff, bmp  Example extensions for vector: Ai, svg, eva, wmf

9 Raster vs Vector  Raster Image Editors Painter, Photoshop, MS Paint, Gimp*  Vector Image Editors CorelDRAW, Illustrator, Inkscape* * - Free, can be downloaded from the internet

10 Searching and Sampling  How to use Google like a boss. You can filter results by size To search for a phrase put quotes around the words Exclude results by putting a – in front of the word. Example: -band

11 Searching and Sampling  With the vast power of the internet comes great responsibility  Just because it’s on the internet doesn’t mean it’s free to use.

12 Searching and Sampling  When can you use an image? When it’s qualified under Fair Use When the author declares it public domain When the author licenses it under an alternative model If you ask permission from the author If you are the author

13 Searching and Sampling  Fair Use? What’s that? Under this clause, you can take copyrighted material and transform it into something else for criticism, education, research, or parodying the original material. Examples:  Saturday Night Live skits  Using bits of work in a review of said work  Limited copying made by a student for academic research

14 Searching and Sampling  There is no real solid line to determine if an image is Fair Use or infringement  Use the four factors to determine Fair Use The purpose of the derivative work (educational, parody, research, etc) Nature of derived content Amount of original work used The effect that the new work has on the market value of the original

15 Searching and Sampling  Fair Use is a privilege, not a right, so don’t abuse it.  No matter what, always make a habit to give credit to the author and link back to his/her work.

16 Creative Commons  What is Creative Commons? Author uses this license to share his or her work to the public and still have control over how it’s used (derivative works, non profit, educational, etc) The public must always give credit to the author. You can use Creative Commons for your work as well. For more information go to:

17 Creative Commons  Types of Licenses

18 Creative Commons  Links to find Creative Commons works  Big CC Content Directory nt_Directories nt_Directories

19 Stock Photography  Stock Photography websites are a good place to find pictures and vector images for advertising, corporate media, etc  Examples: Istockphoto.com Gettyimages.com

20 Stock Photography  Advantages Almost endless search detail Good to use stock photos as templates for illustrations or heavy photo manipulations  Disadvantages Most pictures look extremely fake and staged, so choose wisely and be creative

21 Classroom Task  Go to flickr.com  Click Search and then Advanced Search  Check the creative commons box near the bottom and search for something  Try to find a picture that is classified as Attribution Non-Commercial to share with class.

22 Homework  Read Chapters 3 and 4 in Digital Foundations book before next class meeting.