Enhanced Classification of Interstitial Lung Disease Patterns in HRCT Images Using Differential Lacunarity

Figure 2

Differential box counting algorithm. A moving window of 9 × 9 pixels and a gliding box of 3 × 3 pixels are used to compute the box mass. A column of 3 cubic boxes is generated. The differential height of the column is (1, 1) = 3 − 1 − 1 = 1.