A small powerpoint presentation that is mentioned in Scanocity is not available for upload. It demonstrates use of scanned image to design a structure. Not critical for understanding. tp, author.

1. Scanners, Scanning and Scanography For RIGHT brained thinkers Presented to the Sequim PC User's Group Tom Pitre, December, 2009 First scan, 1957 - from a SCANNER in development at the U.S. National Bureau of Standards. Size – measured 5 sq. CM (@ .77 sq. inches)

2. A Little Scanner Entertainment Scanner plays music. Follow the link above at home. http://www.youtube.com/v/jJgSraig-bU&hl=en&fs=1&

3. Cat Scan

4. How Does a Scanner Work? Image is lit. Mirrors reflect light into lens, then on to a CCD that turns light into electricity. White=more current. Focused light reaches color CCD (diodes). A converter (ADC) stores readings of electricity as shades of gray. Lastly, the digital information is sent to PC where it is translated into a format that graphics programs understand.

5. Carriage Assembly of Scanner

6. The CCD

7. Tiny, Optical Lens

8. A Poor Job of Scanning

9. Moire or interference pattern Source and background informaton: http://en.wikipedia.org/wiki/Moir%C3%A9_pattern

10. Another Newspaper Scan

11. A Good Scan – in color

12. Google Book Scan Problem

14. Scanner Control Panel; Example

15. Scanned Text (image)

16. OCR – on line service Image to DOC or TXT http://www.newocr.com

17. Scanner Button Settings

18. Image Scan Settings

20. Grayscale The scale is 0 to 100. 0 is paper white, while 100 is solid black.

21. Dithering Dots or pixels are arranged in such a way that allows us to perceive more colors than are actually used.

23. Descreening

26. Original scanned at 300 dpi

27. Original scanned at 96 dpi

28. Deep Field Scanning You may scan under plastic (translucent plastic box) or under a black box. (Paint inside of a shallow box flat black.

29. Scanning Objects Scan Feathers Fruit and vegetables Shells Flowers Pine Cones

31. Scanning objects

32. Manipulation of Source

33. Art Scan; Assemblage

35. 3D Object

37. Scanned B&W Negative Scanned negative on LEFT. Used image software to change scan to NEGATIVE, which makes a “PRINT”. This can be manipulated, of course.

38. Scan Negatives