LRA: Local Rigid Averaging of Stretchable Non-rigid Shapes

  • Dan Raviv
  • Eduardo Bayro-Corrochano
  • Ramesh Raskar


We present a novel algorithm for generating the mean structure of non-rigid stretchable shapes. Following an alignment process, which supports local affine deformations, we translate the search of the mean shape into a diagonalization problem where the structure is hidden within the kernel of a matrix. This is the first step required in many practical applications, where one needs to model bendable and stretchable shapes from multiple observations.


Non-rigid shapes Metric invariants Affine invariant Averaging shapes Shape space Non-rigid statistics 

Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • Dan Raviv
    • 1
  • Eduardo Bayro-Corrochano
    • 2
  • Ramesh Raskar
    • 3
  1. 1.School of Electrical Engineering, Faculty of EngineeringTel-Aviv UniversityTel AvivIsrael
  2. 2.Department of Electrical Engineering and Computer ScienceCINVESTAV Campus GuadalajaraGuadalajaraMexico
  3. 3.Media LabMassachusetts Institute of Technology (MIT)CambridgeUSA

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