Assessment of the algorithm sensitivity, w (1), w (2) and w (3), to the rotation of the analyzed area in the angular range of ϕ =0 to 180o
by every 1o
. The rotation of the ROI affects the features w(1) and w(3) to the greatest extent. The change in the value of the error of the feature w(1) is cyclic and its frequency of changes is several times larger than the rotation.