Illustration of the morphological variation of cirrus structures by artificially increasing or decreasing scattering coefficients. The third panel is a 25′ × 25′ cutout of the optical cirrus map in the example dataset, which is used as the base image. The amplitudes of scattering covariance C₀₁ and C₁₁ are scaled by a factor K that is reduced in the left two panels and increased in the right two panels. From left to right, the sparsity and linearity of the field increase.