不同可视化方法对泥石流灾害信息认知影响对比分析

Comparative Analysis on the Cognition Ipacts of Debris Flow Disaster Information for Different Visualization Methods

科学有效合理的可视化能够提高泥石流灾害信息表达的有效性与可读性。以七盘沟泥石流为例,设计并开展了不同可视化方法对泥石流灾害信息认知影响的对比实验,构建了基于灰色色带、自解释性符号和应急颜色、真实纹理模型两类泥石流灾害场景,探索了上述可视化方法在泥石流灾害信息传递能力方面的差异性。实验收集得到两组参与者数据,从准确度和认知时间2个方面来评价参与者认知实验结果。实验结果表明:①灰色色带和应急颜色进行泥深值可视化时,灾害信息的传递能力无显著差别;②自解释性符号与真实感纹理模型相比具备更强更稳定的信息传递能力,用户能够快速认知泥石流灾害信息。

Scientific and appropriate visualizations ensure the effectiveness and readability of debris flow disaster information.Taking debris flow disaster in Qipan gully as an example,he design and implementation of a comparative experiment on the spatial cognition impact on debris flow disaster information for different visualization methods are presented, two debris flow disaster scenes constructed based on the a continuous gray ribbon, self-explanatory symbols, emergency warning colors and photorealistic texture models, and the differences in information transmission ability of debris flow disasters based on the above visualization methods is explored.Finally, we collected the experimental data from two groups of participants, and evaluated the experimental results from the answer accuracy and finish time.The experimental results are drawn: ① When the continuous gray ribbon and the emergency warning colors are used to visualize the mud depth value, there is no significant difference in the transmission ability of the disaster information;② Self-explanatory symbols have stronger and more stable information transmission abilities than photorealistic texture models, and users can quickly recognize debris flow disaster information.