Shifting and mirroring is already a standard thing in papers with crop-10 (top-left, top-right, middle, bottom-left, bottom-right) * 2 (reflection on the horizo

Shifting and mirroring is already a standard thing in papers with crop-10 (top-left, top-right, middle, bottom-left, bottom-right) * 2 (reflection on the horizontal axis). Colour shifting is also done via PCA analysis. One thing that humans have is that young children watch the pages of a book turning, so see basic images at all extreme angles.