Abstract:Earthquakes are one of the most serious of all natural disasters. If a landscape belt is destroyed by an earthquake, regular building structures in the landscape belt will be also changed. Degree-of-damage evaluation of landscape belts is key to urban earthquake avoidance and disaster reduction, so it is of great significance to study degrees-of-damage to regular buildings in the landscape belt. In this paper, a method based in dimensional analysis of earthquake disaster images is used to evaluate the damage degree of landscape belts. According to the earthquake disaster image quality of regular buildings, fragmentation degree was categorized based on the change characteristics of the image dimensions. Optimal threshold was then calculated according to the crushing probability, and the fractional-dimension method was used to extract image dimension features. On this basis, the spatial autocorrelation degree of damaged regular buildings was transformed into a normal distribution curve. A model was then constructed to evaluate the degree-of-damage of the buildings. This case study proved that the method of landscape zone damage degree evaluation, based on dimensional analysis of earthquake disaster images, can be applied to real-life cases.
