System and method for automatically adapting gait of virtual character to terrain

Abstract

The invention relates to a system and a method for automatically adapting the gait of a virtual character to the terrain. The system and the method use input gait action of the character as reference data, the system automatically analyze key film frames of leg motion in the gait action, and use analyzed information to automatically generate various leg motion parameter combinations required by different terrains, thereby enabling input gait action data to be suitable for various terrains, and enabling generated results of gait animation to approach referenced motion capture data as much as possible. Through the system and the method in the invention, a user can achieve the animation production effect of automatically adapting the gait to any landform in real time only by inputting a virtual character and a segment of ideal gait motion data (a motion clip) of the character without giving a walking path and information of obstacles in the virtual environment in advance.

Description

technical field [0001] The present invention is a system and method for automatically adapting the gait of a virtual character to the terrain. It uses the input character gait as reference data to analyze the key frame of the leg movement during the gait and utilize the analyzed information, and a system and method for automatically generating combinations of various leg motion parameters required by different terrains. Background technique [0002] The gait animation production of virtual characters has always been a very challenging and difficult problem. In the prior art, the most commonly used production methods for producing gait animations of virtual characters can be roughly divided into three types. [0003] The first is the production method of keyframe animation (Keyframing). In keyframe animation, the animator directly inputs the keyframe and interpolation information into the computer, and the computer generates animation based on this input. This kind of virtu...

AI Technical Summary

Problems solved by technology

However, since motion capture uses equipment and signal processing methods, the time spent on steps such as noise elimination and joint correction after motion motion capture is quite astonishing, and motion data needs to be continuously corrected and adjusted. Get stable animation results

In addition, the cost of construction and use of motion capture equipment is quite expensive, and it is not easy for ordinary users to obtain

[0005] The third is to artificially set the gait parameters of the virtual character, such as the size of the footsteps, the position of the legs and the information of the environmental variables, etc., for example, there are quite a few fields researching this topic, including robotics, biomechanics, human However, most systems can only focus on some special cases, such as the simulation on a flat road without obstacles, or directly given the target walking path and obstacle information, etc.

[0006] Therefore, in the prior art, whether it is a key frame animation, motion capture type or simulation type of character gait movement production method, the gait of the virtual character is a specific gait design, which is difficult to be adjusted flexibly and repeatedly. Used in different environments, with real-time dynamic presentation

For example, the action of walking on flat ground and walking on rough terrain with ups and downs, sloping ground, or full of obstacles cannot be compared in terms of movement patterns, because the gait and posture of human walking on flat ground are different from those in It will be different when walking on rough terrain, so if the gait of the avatar walking on flat ground is obtained through key frame animation and motion capture, but if the avatar is to walk naturally on rough terrain, it still needs to be recreated Or capture the action to get the animation of the gait of the virtual character that meets the needs, which is quite time-consuming and laborious for animation production

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