US 11,893,673 B2
Morph target animation
Tim Wu, Auckland (NZ); Pavel Sumetc, Auckland (NZ); and David Bullivant, Levin (NZ)
Appl. No. 17/287,254
Filed by SOUL MACHINES LIMITED, Auckland (NZ)
PCT Filed Oct. 31, 2019, PCT No. PCT/IB2019/059327
§ 371(c)(1), (2) Date Apr. 21, 2021,
PCT Pub. No. WO2020/089817, PCT Pub. Date May 7, 2020.
Claims priority of application No. 747627 (NZ), filed on Oct. 31, 2018.
Prior Publication US 2023/0117787 A1, Apr. 20, 2023
Int. Cl. G06T 13/40 (2011.01); G06T 19/20 (2011.01); G06T 7/155 (2017.01); G06T 15/08 (2011.01)
CPC G06T 13/40 (2013.01) [G06T 19/20 (2013.01); G06T 7/155 (2017.01); G06T 15/08 (2013.01); G06T 2210/44 (2013.01); G06T 2219/2021 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method for generating a weighted interpolation between a plurality n of morph target shapes B1 . . . Bn elative to a base shape B0 including the steps of:
receiving a set of weights W, including for each morph target shape Bk of the morph target shapes B1 . . . Bn, a weight wk to be applied to that morph target shape Bk;
receiving a plurality m of constraint shapes C1 . . . Cm, each constraint shape associated with non-zero weights (associated weights) on one or more of the morph target shapes B1 . . . Bn (associated shapes);
generating a continuous multivariate interpolation function configured to reproduce each morph target shape and each constraint shape when a respective morph target shape or a constraint shape's associated weights on associated shapes are provided as arguments to the interpolation function; and using the weights W to be applied to morph target shapes as arguments of the interpolation function to generate the weighted interpolation, wherein the interpolation function has the form:
ƒ(W)=B0+Σk=1n (wk ΔBk)+Σ1=1m (βi ΔCi)
wherein ΔBk represents a modified morph target shape;
ΔCi represents a modified constraint shape; and
βi represents a modifier applied to each constraint shape Ci;
wherein the interpolation function is configured to make the interpolation function hold for all constraint shapes C1 . . . Cm.