Remote Collaboration mediated by Mixed and Augmented Reality (MR/AR) shows great potential in scenarios where physically distributed collaborators need to establish a common ground to achieve a shared goal. So far, most research efforts have been devoted to creating the enabling technology, overcoming engineering hurdles and proposing methods to support its design and development. To contribute to more in-depth knowledge on how remote collaboration occurs through these technologies, it is paramount to understand where the field stands and how characterization and evaluation have been conducted. In this vein, this work reports the results of a literature review which shows that evaluation is frequently performed in ad-hoc manners, i.e., disregarding adapting the evaluation methods to collaborative AR. Most studies rely on single-user methods, which are not suitable for collaborative solutions, falling short of retrieving the necessary amount of contextualized data for more comprehensive evaluations. This suggests minimal support of existing frameworks and a lack of theories and guidelines to guide the characterization of the collaborative process using AR. Then, a critical analysis is presented in which we discuss the maturity of the field and a roadmap of important research actions is proposed, that may help address how to improve the characterization and evaluation of the collaboration process moving forward and, in consequence, improve MR/AR based remote collaboration.

由混合和增强现实 (MR/AR) 介导的远程协作在物理分布的协作者需要建立共同基础以实现共同目标的场景中显示出巨大的潜力。迄今为止，大多数研究工作都致力于创造使能技术、克服工程障碍并提出支持其设计和开发的方法。为了更深入地了解如何通过这些技术进行远程协作，了解该领域的现状以及如何进行表征和评估至关重要。在这方面，这项工作报告了文献综述的结果，该结果表明评估经常以临时方式进行，即不考虑将评估方法应用于协作 AR。大多数研究依赖于单用户方法，不适合协作解决方案，无法检索必要数量的上下文数据以进行更全面的评估。这表明对现有框架的支持很少，并且缺乏理论和指南来指导使用 AR 的协作过程的表征。然后，提出了一个批判性分析，我们讨论了该领域的成熟度，并提出了重要研究行动的路线图，这可能有助于解决如何改进协作过程的特征和评估，从而提高 MR /AR 基于远程协作。这表明对现有框架的支持很少，并且缺乏理论和指南来指导使用 AR 的协作过程的表征。然后，提出了一个批判性分析，我们讨论了该领域的成熟度，并提出了重要研究行动的路线图，这可能有助于解决如何改进协作过程的特征和评估，从而提高 MR /AR 基于远程协作。这表明对现有框架的支持很少，并且缺乏理论和指南来指导使用 AR 的协作过程的表征。然后，提出了一个批判性分析，我们讨论了该领域的成熟度，并提出了重要研究行动的路线图，这可能有助于解决如何改进协作过程的特征和评估，从而提高 MR /AR 基于远程协作。