A surface fractal dimension research of soil-pore interface based on image analysis

摘要

The inner spatial formation and structure of soils has been the basic and important subject of investigation. With the development of digital image technology, it's easier to obtain images of soil-pore at the extent between micron and millimeter. In this study, we acquire soil-pore binary image by application of Fast Fourier Transform (FFT) and filter technique, combined with actual soil porosity. The soil-pore fractal dimension depicts the irregular and rugged boundaries between soil pores and particles. The fractal dimension research of soil-pore interface indicates the obvious correlativity existed between fractal properties and soil texture, though pore-size distribution pattern significantly alters soil properties.