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Abstract
Three-dimensional (3D) laser scanning is a geovisual technology used for precision scientific measurements and 3D representations of reality. Laser scanning technology produces point clouds, which are extraordinary kinds of images: commonly a combination of the laser beams’ journey between the scanner and the materialities of a site, and the photographs. In this article, I examine the confused surfaces of point clouds by focusing on the encounter between the laser scanner and moving objects. This encounter is registered as a figure without resemblance, which I call the chimeric point cloud. The chimeric point cloud is oriented toward the past and the future. Using this example, and drawing on Deleuze’s surface event, I broaden the notion of nonrepresentational landscape theory to a consideration of an absence of both the past and future. I show how digital images and technology affect the landscape sight at future sites of encounter through generating sensations.
三维（3D）激光扫瞄是为了精密科学测量和三维再现现实使用的地理视觉技术。激光扫瞄技术生产点云，并为奇特的影像类别：一般而言是扫瞄仪与场所物质性之间的激光束旅程和相片的结合。我于本文中，透过聚焦激光扫瞄仪与移动物体之间的交会，检视点云的混杂表面。此一交会注记为缺乏相似性的特徵，我称之为嵌合点云。嵌合点云导向过去与未来。我使用此一案例，并运用德勒兹的表面事件，将非再现地景理论的概念拓展至同时缺乏过往与未来的考量。我展现数码图像与技术，如何透过生产感知，影响未来交会场所的地景景象。
El escaneo tridimensional (3D) con láser es una tecnología geovisual que se usa para mediciones científicas de precisión y para representaciones 3D de la realidad. La tecnología del escaneo por láser produce nubes de puntos, que son tipos de imágenes extraordinarias: comúnmente una combinación de las travesías de los rayos láser entre el escáner y las materialidades de un sitio, y las fotografías. En este artículo examino las confusas superficies de nubes de puntos concentrando la atención en el encuentro entre el escáner de láser y objetos en movimiento. Este encuentro se registra como una figura sin semejanza, que yo llamo nube de puntos quimérica. La nube de puntos quimérica está orientada hacia el pasado y hacia el futuro. Utilizando este ejemplo, y basándome en el evento superficial de Deleuze, amplío la noción de la teoría no representacional del paisaje a la consideración de una ausencia del pasado y el futuro. Muestro el modo como las imágenes y tecnología digitales afectan la vista del paisaje en sitios futuros de encuentro generando sensaciones.
Notes
1. In our department, the Department of Geography and Geology at the University of Turku, there is a research tradition based on fluvial 3D laser scanning (e.g., Kasvi et al. Citation2015; Lotsari et al. Citation2015), however, my research was not connected with this research. My research was part of the City of Turku’s Urban Research Program that “seeks to support academic urban research, promote tools for urban governance, and develop knowledge exchange between the universities and the City of Turku” (Turku Citation2016). My research was twofold: I studied the differences between the visual approaches of 3D laser scanning and urban photography in the River Aura environment. This article discusses that part of the project related to the 3D laser scanning.
2. Nevertheless, the line is not clear cut. Ingold (Citation2000, 113; Citation2011, 69) has paid attention to the virtuality through the notion that we are “forever on the verge of the actual,” and Tilley (Citation2004a) elaborated that “in an experimental relationship with things there is always a chiasm, an intertwining between ‘outside’ and ‘inside,’ which mediate each other but never totally fuse” (30).
Additional information
Notes on contributors
Paulina Nordström
PAULINA NORDSTRÖM is a PhD student in the Department of Geography and Geology, University of Turku, Turku, 20014, Finland. E-mail: [email protected]. Her current research interests include landscape theory, art and creativity, and event philosophy.