1. Image compression Skills: none IT concepts: effect of image compression This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike 3.0 License.

2. Where does this topic fit? Internet concepts –Applications –Technology –Implications Internet skills –Application development –Content creation (images)

4. 75 KB96 KB 51 KB 15 KB 21 KB 11 KB 30 KB 139 KB 6 KB

5. 54%69% 37% 11% 15% 8% 22% 100% 4%

6. See the difference? Original Compressed, 11% of original

7. 8 X zoom Original Compressed, 11% of original

8. Good enough? Original Compressed, 11% of original

9. Original, 139 KB Compressed to 4.6 KB Compressed to 17.9 KB

10. In another presentation, we mentioned three popular formats for compressed images. Do you recall what they were? Do you recall which situations each would be used in? What factors would you consider in deciding how much to compress an image? How does image compression tie into our discussion of the amount of information in an image? A few questions

11. Image compression Skills: none IT concepts: effect of image compression This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike 3.0 License.