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Dr Libor Spacek
Omnidirectional Vision
Sample Images
  • Panoramic image of Frinton (scrollable horizontally), obtained by 'stitching together' a number of conventional images. This is an example of the "rotating camera" approach and its difficulties.
  • Catadioptric image of Prague, obtained with a hyperbolic mirror. Unwarped image of Prague.
  • Catadioptric close-up image of my jacket, obtained with a conical mirror. Unwarped jacket.
  • Some more catadioptric images, originals and unwarped, taken with the conical mirror.
Test Data
I have a collection of colour images taken with a special purpose catadioptric camera which I will be happy to make available to these projects. The hyperbolic mirror image below illustrates the problem with such radially curved mirrors, as opposed to conical mirrors, in that most of the useful image area is directed at the sky or at the ground/robot, instead of being directed towards the areas of interest. Conical mirrors are used in this research to address this problem. The resolution around the edge of conical mirrors is far better than that near their apex. The apex should be pointed up for close-up work and down for long distance views.

logo img left portrait logo img right portrait Designed and maintained by Dr Libor Spacek. Updated Friday, 16-Mar-2007 14:32:20 GMT
publications,  biography, email: spacl (@essex.ac.uk).
Some of my courses: Computer Vision,  Sensor Signal Processing,  Vision for Robotics,  Robot Programming.