Fig. 2From: Multi-scale characterizations of colon polyps via computed tomographic colonographyIllustration of co-occurrence matrix of two-dimensional images. a: Two-dimensional GLCM calculation; b: Three-dimensional GLCM calculation; c: A GLCM example when angle(θ) = 0°, displacement = 1. GLCM: Gray-level co-occurrence matrixBack to article page