Exploration of virtual human running based on CCD algorithm

Abstract

SummaryTo make a more thorough understanding of human movement, the research of virtual human running based on the CCD (Cyclic‐Coordinate Descent) algorithm was focused on. First of all, the CCD algorithm, the rotation range of the human joint, the running cycle, the key moment of running movement, and the decomposition of running movement were introduced in detail. Then, the inverse kinematics based on the CCD algorithm was solved, the inverse kinematics in the running was solved, and the motion simulation of the upper body and the specified path were carried out. Finally, the simulation results were analyzed. The results showed that the parameters such as the percentage of the support period, the vacant height, the running level, the step frequency, and the frame rate were adjusted by the interactive mode. In a word, it makes the running posture generated diversified and more characteristic.

Extending FABRIK with Obstacle Avoidance for Solving the Inverse Kinematics Problem

“…Heuristic approaches usually use simple ways for solving the IK problem without using complex equations and calculations. Typical heuristic methods for solving IK problems have cyclic coordinate descent (CCD) [27][28][29][30] and triangulation IK [31,32]. CCD is an iterative heuristic technique that is suitable for interactive control of an articulated body, which is early proposed by Wang and Chen [27].…”

Virtual Human: A Comprehensive Survey on Academic and Applications

“…Second, virtual humans are technological products created by the interplay of multiple technologies, including computer graphics, motion capture, machine learning, high-precision rendering, and speech synthesis. Third, virtual humans have anthropomorphic characteristics; their appearance, body shape, gender, and personality are very similar to those of real people, and they also have the behavioral characteristics of real people, such as language, expressions, and movements [12]- [13]. Finally, compared to real people, virtual human are more malleable in terms of image, persona, and backstory, have more room for imagination, and can be used to meet different needs and scenarios.…”