Comparison of methods for measuring fractal dimension.

Fractal dimension has been proposed as a useful method for characterizing medical images. The fractal dimension is calculated from the average radial power spectrum of the image. However, simpler methods of calculation have been proposed. This paper examines a very simple and easily implemented method which has been proposed for the calculation of fractal dimensions. Comparisons are made between the more rigorous method and the proposed simplification. It is found that the simpler method is a useful technique for calculating estimates of fractal dimension provided the range of dimensions of interest is small.