High Resolution Viewscape Modeling Evaluated Through Immersive Virtual Environments

ISPRS International Journal of Geo-Information

PerverK. Baran¹  Helena Mitasova¹  RossK. Meentemeyer¹  Jelena Vukomanovic¹  Anna Petrasova¹  Payam Tabrizian² 

[1] Center for Geospatial Analytics, North Carolina State University, Raleigh, NC 27695, USA;IDEO, Pier 28 Annex, The Embarcadero, San Francisco, CA 94105, USA;

关键词: landscape;    lidar;    viewshed;    urban design;    urban planning;    geospatial;   

DOI  :  10.3390/ijgi9070445

来源: DOAJ

【 摘 要 】

Visual characteristics of urban environments influence human perception and behavior, including choices for living, recreation and modes of transportation. Although geospatial visualizations hold great potential to better inform urban planning and design, computational methods are lacking to realistically measure and model urban and parkland viewscapes at sufficiently fine-scale resolution. In this study, we develop and evaluate an integrative approach to measuring and modeling fine-scale viewscape characteristics of a mixed-use urban environment, a city park. Our viewscape approach improves the integration of geospatial and perception elicitation techniques by combining high-resolution lidar-based digital surface models, visual obstruction, and photorealistic immersive virtual environments (IVEs). We assessed the realism of our viewscape models by comparing metrics of viewscape composition and configuration to human subject evaluations of IVEs across multiple landscape settings. We found strongly significant correlations between viewscape metrics and participants’ perceptions of viewscape openness and naturalness, and moderately strong correlations with landscape complexity. These results suggest that lidar-enhanced viewscape models can adequately represent visual characteristics of fine-scale urban environments. Findings also indicate the existence of relationships between human perception and landscape pattern. Our approach allows urban planners and designers to model and virtually evaluate high-resolution viewscapes of urban parks and natural landscapes with fine-scale details never before demonstrated.

【 授权许可】

Unknown