Yeh Michelle, Merlo James L, Wickens Christopher D, Brandenburg David L
University of Illinois at Urbana-Champaign, Urbana, Illinois 61874, USA.
Hum Factors. 2003 Fall;45(3):390-407. doi: 10.1518/hfes.45.3.390.27249.
We conducted 2 experiments to investigate the clutter-scan trade-off between the cost of increasing clutter by overlaying complex information onto the forward field of view using a helmet-mounted display (HMD) and the cost of scanning when presenting this information on a handheld display. In the first experiment, this trade-off was examined in terms of the spatial accuracy of target cuing data in a relatively sparse display; in the second, the spatial accuracy of the cue was varied more radically in an information-rich display. Participants were asked to detect and identify targets hidden in the far domain while performing a monitoring task in the near domain using either an HMD or a handheld display. The results revealed that on a sparse display, the reduced scanning from the HMD presentation of cuing out-weighed the costs of clutter for cued targets, regardless of cue precision, but no benefit was found for uncued targets. When the HMD displayed task-irrelevant information, however, target detection was hindered by the extraneous clutter in the forward field of view relative to the handheld display condition, and this cost of clutter increased as the amount of data that needed to be inspected increased. Potential applications of this research include the development of design considerations for head-up displays for aviation and military applications.
我们进行了两项实验，以研究在使用头盔式显示器（HMD）将复杂信息叠加到前视视野从而增加杂乱程度的成本与在手持显示器上呈现该信息时的扫视成本之间的杂乱 - 扫视权衡。在第一个实验中，这种权衡是根据相对稀疏显示中目标提示数据的空间准确性来检验的；在第二个实验中，在信息丰富的显示中提示的空间准确性变化更为剧烈。参与者被要求在使用HMD或手持显示器在近域执行监测任务的同时，检测并识别隐藏在远域的目标。结果显示，在稀疏显示中，无论提示精度如何，HMD提示呈现带来的扫视减少超过了提示目标的杂乱成本，但未提示目标未发现益处。然而，当HMD显示与任务无关的信息时，相对于手持显示器条件，前视视野中的无关杂乱会阻碍目标检测，并且这种杂乱成本随着需要检查的数据量增加而增加。这项研究的潜在应用包括为航空和军事应用的平视显示器制定设计考量。
