Fig. 6From: Spatial referencing of chlorophyll fluorescence images for quantitative assessment of infection propagation in leaves demonstrated on the ice plant: Botrytis cinerea pathosystemIllustration of the error assessment in affine registration of PAM images. \(P_{i} ,\;i = 1, \ldots ,N\)—control point in the fixed image \(I_{F}\), \(Q_{i}\)—mapping of the control point \(P_{i}\) in the moving image \(I_{M}\), \(R_{i}\)—mapping of the control point \(P_{\text{i}}\) after registration, \(R_{i} P_{i} =\Delta r_{i}\)—displacement error of the control point \(P_{\text{i}}\) after registrationBack to article page