UT3Variations.sum_stack

t3toolbox.uniform_frame_variations_format.UT3Variations.sum_stack(axis=None)

def sum_stack(self, axis=None) -> 'UT3Variations':

Corewise sum over stack axes (a batch of variations -> their sum; the tangent sum, by linearity). axis indexes the stack (default: the whole stack). The mask ORs over the summed axes – a no-op for a same-mask (single-frame) stack; see docs/uniform_masks_vs_ranks.md.

Return type:

UT3Variations