Augmented reality rotation & zoom

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SUMMARY

The discussion centers on calculating the rotation and zoom of a 2D rectangle in an augmented reality engine using corner coordinates from a webcam stream. The user has successfully detected the four corner coordinates but faces challenges due to the coordinates not forming a right-angle quadrilateral. This indicates a potential projection issue, suggesting that the rectangle's image may be distorted in space. The conversation highlights the need for precise geometric calculations to derive the x-, y-, and z-rotations and zoom levels from the provided coordinates.

PREREQUISITES
  • Understanding of augmented reality concepts
  • Familiarity with 2D coordinate systems
  • Knowledge of geometric transformations
  • Experience with computer vision techniques
NEXT STEPS
  • Research geometric transformations in augmented reality
  • Learn about perspective projection and its effects on 2D shapes
  • Explore algorithms for calculating rotation and scaling from corner coordinates
  • Investigate tools like OpenCV for image processing in augmented reality
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Augmented reality developers, computer vision engineers, and anyone involved in image processing and geometric transformations in AR applications.

tyrskyzz
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I'm working on augmented reality engine and I have a following problem.
I'm tracking a 2D rectangle tracking picture inside an other picture (webcam stream).
I have detected all four 2D corner coordinates for that tracking picture.

Now I need to calculate from the corner coordiantes how the original tracker picture has rotated (x-,y-,z-rotations) and zoomed.
Bare in mind that the coordinates doesn't create right angle quadrilateral.
Any ideas how I can do it?
Thanks for any advice.
 
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You haven't given enough information to define a specific problem. Perhaps people who write virtual reality programs all know what you are talking about, but I don't. On one hand you say you are tracking a 2D "rectangle" and on the other hand you say that the coordinates don't define a right angle quadrilateral. So is this some sort of projection problem? Are we looking at the image of a 2D rectangle in space projected onto a plane?
 

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