Due to the effect of image decorrelation under large deformation fields， digital image correlation（DIC） has never been able to complete parallel computation between images. In order to break through this bottleneck， this paper proposes an accelerated-KAZE（AKAZE）-based reference image update method， which can complete the reference image update before DIC is officially calculated， and provide independent data for parallel computing. A graphics processing unit（GPU） parallel computing architecture is constructed， which can independently estimate all subsizes and complete the parallel computation between images and subsizes. Finally， tensile tests are performed on the nitrile butadiene rubber（NBR）， and the results show that compared with the traditional serial DIC calculation method， the proposed parallel method can be increased by two orders of magnitude.