Linux Conf Au 2002 Presentation - Tinmith Augmented Reality Project

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Learning OpenGL • OpenGL Red Book is what everyone learns from • Many free tutorials available on the web • OpenGL is beautifully designed and super easy to learn • It is not convoluted and tricky like Xlib • Simple things are simple • Optimisation and tricky things are still possible • Supports primitive rendering, shading, textures, depth buffering, 2D and 3D projections, linear transformations, and display lists • Everything you need to write both 2D and 3D applications • X supports 2D primitives and windowing, that’s about it 30 Wayne Piekarski Wearable Computer Lab CIS @ UniSA http:/ / www.tinmith.net/ wayne lca 2004
Using OpenGL • I write most of my apps using pure OpenGL now • I use X only as a way of opening a window for OpenGL • No way under X to draw lots of primitives without incurring the overheads described before • If you use X then you get hardware acceleration but you are limited by client/server overheads • If you draw locally you can use SHM and DGA to copy direct to hardware but you have no primitive acceleration • I’ve always wanted an Xlib which was compiled directly into the client or allowed direct access to the hardware • We now have it in the form of DRI 31 Wayne Piekarski Wearable Computer Lab CIS @ UniSA http:/ / www.tinmith.net/ wayne lca 2004
Page 1 and 2: Hacking Your Own Virtual and Augmen
Page 3 and 4: What is this tutorial not about?
Page 5 and 6: Lazy like a fox • Teach you inter
Page 7 and 8: Immersive 3D graphics • My resear
Page 9 and 10: Optical augmented reality • Hard
Page 11 and 12: Outdoor augmented reality • My re
Page 13 and 14: Tinmith mobile 3D modelling • Glo
Page 15 and 16: ARQuake demonstration • Play vide
Page 17 and 18: Processing • We need to carry suf
Page 19 and 20: Free beer AR • AR and VR are domi
Page 21 and 22: Distribution installation 21 lca 20
Page 23 and 24: Software requirements • Does not
Page 25 and 26: Graphics libraries • Xlib • Exi
Page 27 and 28: 3D hardware is cheap • Nowadays 3
Page 29: Nvidia and ATI • Avoid other hard
Page 33 and 34: Useful example • X has trouble di
Page 35 and 36: Live video capture 35 lca 2004
Page 37 and 38: Video 4 Linux • V4L was the first
Page 39 and 40: Firewire video capture • Linux ha
Page 41 and 42: Using DC devices • The RGB24 mode
Page 43 and 44: Vision tracking 43 lca 2004
Page 45 and 46: • Capture video frame • Extract
Page 47 and 48: Example matrix operations • Ident
Page 49 and 50: Tracking position in a room • Mul
Page 51 and 52: • Hacking is not just about softw
Page 53 and 54: Interfacing technology • Parallel
Page 55 and 56: Serial RS-232 • 9-pin D shell con
Page 57 and 58: Dumb controller boxes • You can b
Page 59 and 60: Conclusion 59 lca 2004
Page 61: • Good luck, and don't fry your h

Linux Conf Au 2002 Presentation - Tinmith Augmented Reality Project

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