RETRACTED: Improved reliability-guided phase unwrapping algorithm based on the fringe modulation and second-order phase difference

This article has been retracted at the request of the Editor-in-Chief and Author. Please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).Reason: A significant error in calculation was discovered after repeating the VC programming presented in the paper. In the previous programming, the authors neglected to include a term in the reliability function formula due to a spelling mistake, which will lead to a completely different result.