An Accelerated Procrustean Markov Process Model with Coherent Constraint for Non-Rigid Structure from Motion

Ying Zhang, Xia Chen, Zhan Li Sun, Kin Man Lam, Zhigang Zeng

Research output: Journal article publicationJournal articleAcademic researchpeer-review


Non-Rigid Structure from Motion (NRSfM) is the task of reconstructing the 3D point set of a non-rigid object from an ensemble of images with 2D correspondences, which has been a long-lasting challenging research topic. Compared to the state-of-the-art methods for NRSfM, the Procrustean Markov Process (PMP) model has obtained a relatively good performance. However, the estimation error and the convergence time of the PMP model will increase simultaneously when noise is present. To address this problem, in this paper, a coherent constraint is constructed to suppress the noise in the initialization step of the PMP algorithm. Moreover, an Accelerated Expectation Maximization (AEM) algorithm is devised to optimize the PMP estimation model. Experimental results on several widely used sequences demonstrate that our proposed algorithm achieves state-of-the-art performance, as well as its effectiveness and feasibility.

Original languageEnglish
Article number8856199
Pages (from-to)145013-145021
Number of pages9
JournalIEEE Access
Publication statusPublished - Oct 2019


  • accelerated expectation maximization algorithm
  • coherent constraint
  • Non-rigid structure from motion

ASJC Scopus subject areas

  • Computer Science(all)
  • Materials Science(all)
  • Engineering(all)

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