基于眼动追踪的智能电视界面可用性评估研究

目的 分析智能电视界面交互设计的合理性，以及眼动追踪在电视界面可用性评估中的可行性。方法 采用主客观结合的可用性评估研究方法，对智能电视界面设计进行评估与优化。以TCL-V7300智能电视为实验对象，使用Tobii X120眼动仪对45名被试进行眼动测试，分为自由浏览界面和用户任务测试两个测试阶段。客观可用性评估采用基于眼动追踪得到的眼动指标(热点图、AOI首次注视时间、AOI注视率、注视轨迹)和行为指标(任务完成时间、任务成功率)进行客观结果分析;主观可用性评估通过用户访谈，获取被试对测试点的理解和使用感受。最终针对智能电视界面的可用性问题，进行了界面优化设计及效果评估。结论 主客观可用性评估测试符合眼动追踪实验设计原理，是具有普适性的智能电视界面可用性评估方法。

Usability Evaluation of Smart TV Interface Based on Eye Tracking

The paper aims to analyze the rationality of the interactive design of the smart TV interface and the feasibility of eye tracking in the evaluation of the usability of the TV interface. The usability evaluation method combining subjective and objective is adopted to evaluate and optimize the interface design of smart TV. Taking the TCL-V7300 smart TV as the research object, 45 subjects are tested with the Tobii X120 eye tracker, which is divided into two test phases:free browsing interface and user task test. Objective usability evaluation uses eye movement indicators (gaze hotspots, AOI first gaze time, AOI gaze rate, gaze trajectory) and behavior indicators (task completion time, task success rate) based on eye tracking to analyze objective results; subjective usability evaluation through user interviews to obtain the participants'' understanding and experience of using the test points. Finally, in view of the usability problem of smart TV interface interaction, the interface optimization design and effect evaluation are carried out. The subjective and objective usability evaluation test conforms to the design principle of eye tracking experiment, and it is a universally applicable usability evaluation method for the design of smart TV interactive interface.