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Computer-implemented method for making a skeleton of a modeled body take a posture

A computer, skeleton technology, applied in computing, 3D modeling, detailed information involving graphical user interfaces, etc., to solve problems such as harmful skeleton definitions

Pending Publication Date: 2021-05-07
DASSAULT SYSTEMES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Coexistence of multiple skeleton definitions is detrimental as it

Method used

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  • Computer-implemented method for making a skeleton of a modeled body take a posture
  • Computer-implemented method for making a skeleton of a modeled body take a posture
  • Computer-implemented method for making a skeleton of a modeled body take a posture

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Embodiment Construction

[0028] figure 1 An exemplary DHM with two skeletons SK1, SK2 associated with a single skin SN is represented. In this exemplary embodiment, skeleton SK1 is a complex and biologically accurate skeleton, including a large number of revolving joints; such a skeleton is useful, for example, to perform ergonomic analysis, but for real-time animation applications too complicated. Skeleton SK2 is much simpler (it contains fewer joints) and has a good compromise between complexity and accuracy for real-time animation, but is too coarse for ergonomic analysis. Human modeling artists participated in the construction of the simple skeleton SK2 and the associated skin to produce plausible skin deformations corresponding to the different poses of the SK2.

[0029] Figures 2A-2C The redirection operation between SK1 and SK2 is shown.

[0030] Figure 2A The parts of skeletons SK1 and SK2 corresponding to the upper body of the DHM are shown in their initial or "zero" pose. The revolvi...

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Abstract

A computer-implemented method for making a skeleton of a modeled human or animal body taking a posture, comprising the steps of: a) providing a first (SK1) and a second skeleton (SK2) each comprising rotational joints (A, A1, A2, A3, B, E, F) connected by bones, each rotational joint of the second skeleton (E, F) being associated to a respective joint of the first skeleton (A, B); b) determining a relative configuration of the second skeleton, mapping each joint of the first skeleton associated to a joint of the second skeleton to said joint of the second skeleton; c) making the first skeleton taking a posture defined by a rotational state for each joint of the first skeleton; and d) computing transformation matrices for the joints of the second skeletons such that a change of its relative configuration is minimized; wherein said second skeleton further comprises a prismatic joint (G) on at least one of its bones, step d) comprising determining rotations of the rotational joints and translation of the prismatic joint or joints of the second skeleton such that the change of its relative configuration is minimized.

Description

technical field [0001] The present invention relates to a computer-implemented method for posing a skeleton of a modeled human or animal body. More precisely, the invention relates to a method for transferring or "redirecting" a pose taken by a first ("source") skeleton to another ("target") skeleton. [0002] The present invention relates to the field of computer graphics and is applicable to a variety of applications such as computer-aided design (CAD), ergonomics, video games, and the like. Background technique [0003] As part of CAD systems, digital human models (DHMs) are widely used for design evaluation and to incorporate human factors in the early stages of design. [0004] A DHM usually consists of a "skeleton" covered by a "skin", even though in some cases it may consist of only the skeleton. A skeleton is made up of a collection of parts called "skeletons", even though the bones do not necessarily correspond to actual anatomical bones, but are articulated by re...

Claims

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Application Information

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IPC IPC(8): G06T17/00
CPCG06T17/00G06T2200/04G06T13/40G06F3/011G06T19/20G06T2200/24G06T2219/2016
Inventor S·雷迪P·陈
Owner DASSAULT SYSTEMES