Polytechnic Institute of Bari, Bari.
IEEE Trans Vis Comput Graph. 2014 Jan;20(1):125-39. doi: 10.1109/TVCG.2013.86.
Efficient text visualization in head-worn augmented reality (AR) displays is critical because it is sensitive to display technology, text style and color, ambient illumination and so on. The main problem for the developer is to know the optimal text style for the specific display and for applications where color coding must be strictly followed because it is regulated by laws or internal practices. In this work, we experimented the effects on readability of two head-worn devices (optical and video see-through), two backgrounds (light and dark), five colors (white, black, red, green, and blue), and two text styles (plain text and billboarded text). Font type and size were kept constant. We measured the performance of 15 subjects by collecting about 5,000 measurements using a specific test application and followed by qualitative interviews. Readability turned out to be quicker on the optical see-through device. For the video see-through device, background affects readability only in case of text without billboard. Finally, our tests suggest that a good combination for indoor augmented reality applications, regardless of device and background, could be white text and blue billboard, while a mandatory color should be displayed as billboard with a white text message.
头戴式增强现实（AR）显示器中的高效文本可视化至关重要，因为它对显示技术、文本样式和颜色、环境照明等因素敏感。开发人员的主要问题是要知道特定显示的最佳文本样式，以及必须严格遵循颜色编码的应用程序，因为颜色编码受到法律或内部规定的限制。在这项工作中，我们针对两种头戴式设备（光学透明和视频透明）、两种背景（亮和暗）、五种颜色（白、黑、红、绿和蓝）以及两种文本样式（普通文本和广告牌文本），对可读性的影响进行了实验。字体类型和大小保持不变。我们通过使用特定的测试应用程序收集了约 5000 个测量值，并进行了定性访谈，对 15 名受试者的表现进行了测量。在光学透明设备上，可读性明显更快。对于视频透明设备，只有在没有广告牌的情况下，背景才会影响可读性。最后，我们的测试表明，对于室内增强现实应用，无论设备和背景如何，白色文本和蓝色广告牌可能是一个不错的组合，而强制性颜色则应以白色文本消息显示的广告牌形式呈现。
