Changes in the visual preference after stream remediation using an image power spectrum: Stone revetment construction in the Nan-Shi-Ken stream, Taiwan
Journal
Ecological Engineering
Journal Volume
71
Pages
426-431
Date Issued
2014
Author(s)
Abstract
This paper investigates changes in the visual perception of a stream landscape due to remediation work (i.e., the construction of a stone revetment, which is a common ecological engineering technique in Taiwan) in the Nan-Shi-Ken stream. Various images of the Nan-Shi-Ken streambank before and after remediation were collected. The visual preference (P) and perceived naturalness (N), which were selected as indices of visual perception, were quantified using a questionnaire survey. The image characteristics were analyzed by the image spectrum method and presented by the spectrum-frequency slope (S). Furthermore, the relationship between S and the visual perceptual reaction was presented. The results of this study demonstrate that P and N increase with increasing vegetative cover on a stone revetment after stream remediation. P and N were highly correlated with S and proportional to S. S provides an index to assess P or N for a stream landscape change due to variation in vegetation. © 2014 Elsevier B.V.
SDGs
Type
journal article