This invention discloses a 3D virtual
digital human interaction
system and method, relating to the fields of human-computer interaction and
artificial intelligence. It addresses the problem of traditional methods relying on preset templates, lacking natural and personalized expression, and resulting in poor interaction adaptability. The
system obtains the current behavioral parameters of the virtual
digital human and the user's interaction intent, calculates basic action logic, and initially matches the
action model range according to the
interaction type. During the interaction phase, it detects the
signal strength of the
input device, sets strength conditions to extract the
data stream, establishes initial response logic, collects dynamic behavior, and constructs a
random forest model to predict behavioral trends. It combines the prediction results with the model for adaptability classification; if the adaptability is low, it collects interaction samples through an auxiliary channel for
visualization simulation, and filters suitable samples and models. Based on the
simulation results, it matches the interaction scene, replaces the initial scene, and executes actions, achieving intelligent response and
natural interaction of the virtual
digital human.