HoloLens头戴设备下的混合现实体验中的通讯媒介实现，作为营养工作坊数字化的一部分 (Implementation of communication media around a mixed reality experience with HoloLens headset, as part of a digitalization of a nutrition workshop)

The release of Microsoft's HoloLens headset addresses new types of issues that would have been difficult to design without such a hardware. This semi-transparent visor headset allows the user who wears it to view the projection of 3D virtual objects placed in its real environment. The user can also interact with these 3D objects, which can interact with each other. The framework of this new technology is called mixed reality. We had the opportunity to numerically transform a conventional human nutrition workshop for patients waiting for bariatric surgery by developing a software called HOLO_NUTRI using the HoloLens headset. Unlike our experience of user and conventional programmer specialized in the development of interactive 3D graphics applications, we realized that such a mixed reality experience required specific programming concepts quite different from those of conventional software or those of virtual reality applications, but above all required a thorough reflection about communication for users. In this article, we propose to explain our design of communication (graphic supports, tutorials of use of material, explanatory videos), a step which was crucial for the good progress of our project. The software was used by thirty patients from Le Puy-en-Velay Hospital during 10 sessions of one hour and a half during which patients had to take in hand the headset and software HOLO_NUTRI. We also proposed a series of questions to patients to have an assessment of both the adequacy and the importance of this communication approach for such experience. As the mixed reality technology is very recent but the number of applications based on it significantly increases, the reflection on the implementation of the elements of communication described in this article (videos, exercise of learning for the use of the headset, communication leaflet, etc.) can help developers of such applications.

翻译：微软的HoloLens头戴设备的发布解决了一些新型的设计问题，这些问题在没有这种硬件的情况下将很难实现。这种半透明的头盔式设备允许戴着它的用户看到投影在其真实环境中的3D虚拟对象。用户还可以与这些3D对象进行交互，并且这些对象可以相互作用。这种新技术的框架称为混合现实。我们利用HoloLens头戴设备开发了一个名为HOLO_NUTRI软件的应用，将传统的人类营养学工作坊数字化为混合现实体验。与我们的用户和传统的专门开发交互式3D图形应用程序的程序员的经历不同，我们认识到，这种混合现实体验需要特殊的编程概念，这些编程概念与传统软件或虚拟现实应用程序的概念完全不同，但最重要的是需要对用户的交流进行全面反思。在本文中，我们提供了我们的通信设计（图形支持、材料使用教程、说明视频）的解释，这一步骤对项目的良好进行非常关键。该软件在勒普伊安韦莱医院的三十名等待肥胖手术的患者中使用，在十个90分钟的课程中，患者必须拿起头盔和HOLO_NUTRI软件体验。我们还向患者提出了一系列问题，以评估这种交流方法对该体验的适当性和重要性。由于混合现实技术非常新，但基于该技术的应用数量显着增加，因此对于如本文中所描述的通信要素（视频、学习练习、传播手册等）的实施的思考可以帮助这些应用程序的开发人员。