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doi:10.1111/j.1747-1567.2010.00670.x The purpose of this paper is to present an approach for the investigation of in-plane strain distribution at the grain scale in polycrystalline materials. The technique is developed by coupling digital image correlation and digital microscopy. By performing and analyzing a series of validation tests, performances and limits of this approach are quantified. An example of its application is presented for a Ni based alloy specimen. It is realized that this approach can obtain accurate displacement data. This technique can thus be used to investigate micromechanical behaviors of polycrystalline materials