1. Learn how to make your drawings come alive…  Lecture 1: SKETCH RECOGNITION Analysis, implementation, and comparison of sketch recognition algorithms, including feature-based, vision-based, geometry-based, and timing-based recognition algorithms; examination of methods to combine results from various algorithms to improve recognition using AI techniques, such as graphical models.

4. How old is sketch recognition?

5. 1962 Sketchpad Ivan Sutherland 1963 MIT PhD thesis "Sketchpad: A Man-machine Graphical Communications System.", First Graphical User Interface Invented on the TX-2: included a nine inch CRT and a lightpen which first gave Sutherland his idea. He imagined that one should be able to draw on the computer. Sketchpad was able to do just this, creating highly precise drawings.

6. Ivan Sutherland

7. First Graphical User Interface Draw directly on computer’s monitor Pop-up menus, Ability to zoom in and out. Rubber-banding of lines Constraint based modeling – lines could be constraint to intersect at precise angle Object oriented programming –Memory structures to store objects – creation of master objects and ‘instances’, which were memory efficient copies of the masters –Inheritance – changes in instance were inherited in duplicates –Polymorphism Ivan Sutherland is considered by many to be the creator of Computer Graphics.

8. In the classroom

9. Light pen

10. Pressed buttons for corners

11. Ivan Sutherland

12. Sutherland Video

13. RAND Tablet 1964 $18,000 (like $100,000 today) Too expensive, why the mouse made it, not the pen. Called Grafacon (for Graphic Converter) Employed a grid of wires under the surface of the pad that encoded horizontal and vertical coordinates in a small magnetic signal. The stylus would receive the magnetic signal, which could then be decoded back as coordinate information.grid coordinatesmagneticsignal

19. Apple Newton First tablet PC, 1993-1998 PDA ("personal digital assistant“) coined late by Apple's then-CEO John Sculley, the driving force behind the project.personal digital assistantJohn Sculley Intended to be a complete reinvention of personal computing. For most of its design lifecycle Newton had a large-format screen, more internal memory, and a rich object-oriented graphics kernel. One of the original motivating scenarios for the design was known as the "Architect Scenario," in which Newton's designers imagined a residential architect working quickly with a client to sketch, clean up, and interactively modify a simple two-dimensional home plan.

20. Tablet Convertible

21. Tablet Slate

22. Tablet Input

23. Cintiq Monitor

24. Smart Board

25. Wacom Tablet

26. Passive vs. Active Digitizer Passive: Finger touch (palm issue) –SmartBoards Active: Special pen (battery/lost pen) –Tablets / Cintiqs

27. Syllabus http://www.cs.tamu.edu/faculty/hammond/ courses/SR/2007http://www.cs.tamu.edu/faculty/hammond/ courses/SR/2007