Object Trajectory Tracking via Image-WiFi Mapping
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Solution Overview
Problem
Existing security arming systems face significant trajectory tracking errors due to blind zones where image feature data of objects cannot be collected, leading to inaccurate real-time trajectory display of monitored objects and patrolling police, as they rely solely on image feature collection devices.
Innovation Solution
A method and system that associate image features with WIFI device information to create a mapping relationship database, allowing for precise position information retrieval and real-time trajectory generation, using a distributed search server to improve query accuracy and data volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If only image feature collecting devices are used for trajectory tracking, then the system structure remains simple, but trajectory tracking accuracy deteriorates due to blind zones where objects cannot be detected
Solution Approach 1:
The patent combines image feature collecting devices with WIFI collecting devices into an integrated trajectory tracking system. The image feature device captures visual information while the WIFI device simultaneously collects WIFI signals and position information, merging multiple sensing modalities to overcome the blind zone limitations of single-modality systems and improve overall trajectory tracking accuracy
Solution Approach 2:
The patent introduces a distributed search server as an intermediary component that receives and processes data from both image feature collecting devices and WIFI collecting devices. This intermediary server integrates information from multiple sources, performs coordinate transformations, and generates comprehensive trajectory information, thereby improving measurement precision without directly increasing the complexity of individual sensing devices
2Measurement precision
If image feature data alone is used for position sampling, then data collection methods remain simple, but position information accuracy deteriorates in blind zones where no image features are available
Solution Approach 1:
The patent implements a multi-functional data collection approach where the system can operate using image feature data, WIFI position information, or a combination of both depending on the situation. This universality ensures that position sampling can continue effectively even when image features are unavailable in blind zones, maintaining position information accuracy and data completeness through alternative sensing methods
3Measurement precision
If only single-object image feature collecting devices are deployed, then deployment cost remains low, but trajectory display accuracy deteriorates due to collection blind zones
Solution Approach 1:
The patent enables WIFI collecting devices to independently provide position information without requiring additional specialized tracking equipment on the monitored objects themselves. The WIFI devices leverage existing infrastructure and the distributed search server's capabilities to self-generate position data, reducing the need for deploying numerous expensive specialized devices while maintaining high trajectory display accuracy
Data Source
AI summary
The present disclosure relates to an object trajectory tracking and displaying method, comprising the following steps of: creating a mapping relationship database of image features and WIFI information for objects in a distributed search server, where each WIFI information includes position information; receiving a trajectory query request for a monitored object; searching the mapping relationship database of image features and WIFI information for objects according to an image feature of the monitored object to produce a WIFI information set, and producing a corresponding position information set based on the WIFI information set; and generating real-time trajectory information of the monitored object based on the position information set. The object trajectory tracking and displaying method and system of the present disclosure make the position of the sampling data points more accurate and improve the accuracy of trajectory querying.