Ghost: Gradient Histogram of Spectral Texture

A gradient-based texture feature for hyperspectral image is formulated with straightforward application to grayscale and color images. Processed in full band, GHOST is expressed as a four-dimensional probability density distribution encompassing joint metrological assessment of spectral and spatial properties. Its performance is close to opponent band local bi-nary pattern (OBLBP) in HyTexiLa texture classification (91 % - 99 % accuracy) with feature size 0.14 % of OBLBP’s.