Virtual character memory extraction and application system and method based on geographic position triggering

By constructing a virtual character memory system triggered by geographic location, and combining multimodal perception and hybrid retrieval algorithms, the problem of insufficient interaction capabilities of virtual characters in real geographic space in existing technologies is solved, and efficient memory storage and personalized interaction in outdoor LBS scenarios are realized.

CN121787576APending Publication Date: 2026-04-03NANJING GUANYUSHAN CULTURAL TOURISM TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202512019476.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-30
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

Existing technologies are insufficient in deeply integrating the intelligent dialogue capabilities of LLM with real geospatial environments. They cannot provide a coherent, realistic, and highly contextualized interactive experience in outdoor LBS scenarios, lack spatial dimensions, or cannot operate effectively in the real physical world, resulting in insufficient interactive capabilities.

Method used

A virtual character memory retrieval and application system based on geolocation is constructed. GNSS data, IMU data, and environmental image streams are collected through a multimodal perception module. Combined with the H3 index calculation library and AR rendering engine, and utilizing the spatiotemporal memory library and generative inference service of the cloud server, hybrid retrieval and adaptive updates are achieved. The extended Kalman filter algorithm is used to fuse location data, and a dual-attenuation hybrid scoring model is combined for memory retrieval.

Benefits of technology

It enables efficient memory storage and retrieval of virtual characters in real geographical space, solves the problems of memory fragmentation and context loss in cross-regional interaction, improves the coherence and personalization of interaction, and meets the needs of outdoor AR tours and immersive games.

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Abstract

The invention discloses a virtual role memory extraction and application system and method based on geographic position triggering, and relates to the technical field of artificial intelligence and geographic information processing. The system comprises a mobile client and a cloud server, the client collects multi-modal data and triggers retrieval through an H3 index, and a cloud constructs a space-time memory bank to achieve hybrid storage and retrieval. According to the method, a smooth trajectory is obtained through multi-sensor fusion positioning, geo-fence pre-filtering is carried out based on an H3 index, an S-T-S model is adopted for sorting memory, and memory is adaptively updated after a context-related reply is generated through LLM. According to the method, time-space-semantic integrated memory management is realized, the problems of context dislocation, low retrieval efficiency, insufficient virtual-real fusion precision and the like of an existing system are solved, a virtual character has anthropomorphic geographical environment perception and memory wake-up capability, and interaction immersion and real-time performance are improved.
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