Digital image correlation (DIC) is a full-field measurement technique. In instantaneous approaches (i.e., registering two images), DIC only gives access to displacement (or velocity) fields. Consequently, acceleration fields are not one of the primary measured variables. To evaluate acceleration fields, a regularization scheme has to be used. The latter may be either heuristic or mechanically motivated. The key idea of the paper is to use spatiotemporal analyses in order to explicitly measure acceleration fields. Various regularization schemes will be assessed, and their relative merits will be studied when performing uncertainty quantifications. Pyrotechnic cutting simulations will provide a set of artificial pictures to be studied in order to validate the new implementations. This analysis enables the measurement performances to be evaluated for the new implementations.

中文翻译：

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通过规范化的数字图像相关性测量加速度场

数字图像相关性（DIC）是一种全场测量技术。在瞬时方法（即配准两个图像）中，DIC仅允许访问位移（或速度）场。因此，加速度场不是主要的测量变量之一。要评估加速度场，必须使用正则化方案。后者可以是启发式的，也可以是机械性的。本文的关键思想是使用时空分析以明确测量加速度场。在进行不确定性量化时，将评估各种正则化方案，并研究其相对优点。烟火切割模拟将提供一组要研究的人造图片，以验证新的实施方式。