Linux Conf Au 2002 Presentation - Tinmith Augmented Reality Project

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libDC video capture • The libDC library is complicated and has almost no documentation except for some include files • The easiest way to capture from DC devices is to use the ARToolKit code because they have written an interface • ARToolKit is modular so you can use just the capture code • I never wrote my own interface because it is quite tricky • The DC specification defines interface for all cameras • Very nice because ALL 1394 cameras work with <strong>Linux</strong>! • Contrast to USB cameras where there is no standard and very poor driver support • I have bet the farm on DC cameras, they are a bit more expensive but they are nice to use 40 Wayne Piekarski Wearable Computer Lab CIS @ UniSA http:/ / www.tinmith.net/ wayne lca 2004
Using DC devices • The RGB24 mode is nice because you can take the raw image data and work with it straight away • Wastes bandwidth but CPU is not used much • USB cameras tend to operate in YUV mode • Coriander is a nice program for playing with cameras • All devices have controllable settings which is nice • I found that DC devices are more robust and reliable than the CPIA USB camera I used • I have used the Pyro Webcam and Point Gray Firefly 41 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 and 30: Nvidia and ATI • Avoid other hard
Page 31 and 32: Using OpenGL • I write most of my
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: Firewire video capture • Linux ha
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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