The Dyfi Project – Julian Ruddock
The project uses the scientific technologies of visualizing the river through both aerial photography and LiDAR imaging. LiDAR is a system of optical remote sensing technology that works by measuring the distance to any given object or surface by hitting the target with light. Rather than use microwaves or radiowaves, LiDAR takes advantage of the known characteristics of light, scattering pulses of ultraviolet, visible or near-infrared light, at a speed of 150,000 pulses per second, from either airborne equipment or ground-based systems. By measuring the return time of the signal a complex and highly accurate map of terrain can be established. As a visualization technology LiDAR is pre-eminent in its ability to render our physical environment in highly defined 3D form.
These are then amalgamated into ambiguous images, suggesting the variance of the water flow and the intermingling of channels. The original digitally mapped archaeology of the river can become multilayered, overlayed and then excavated through the mutability of the drawing and painting process. Treated subjectively, allowing in irregularities and decisions made in terms of mark making, tonal range and relative scale, the images become maps that aim for the visual conflation of geological time.