Motion Trajectory Target Detection for Closely Spaced Objects

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Solution Overview

Problem

Existing smart home technologies struggle to accurately track and distinguish multiple closely spaced objects, leading to ineffective smart home services and deteriorated user experience due to clustering of objects into one trajectory.

Innovation Solution

A target detection method that utilizes motion trajectory data from point cloud information to accurately determine the position of each object in a space, displaying a real-time position marker based on updated trajectory data to prevent location confusion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If radar equipment clusters target objects in a target space, then the detection process is simplified, but closely spaced objects are merged into one cluster, reducing positioning accuracy

Engineering Contradiction:
Improvedetection process complexityVSAvoidpositioning accuracy
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The patent segments the detection process into two distinct stages: first clustering objects to reduce complexity, then performing precise positioning on each clustered object. This segmentation allows the system to benefit from both simplified processing and accurate measurement by applying different methods at different levels of the detection hierarchy.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces a hierarchical dimension to the detection process, moving from spatial clustering in the physical domain to individual object tracking in a logical/algorithmic domain. This dimensional transition allows the system to manage complexity while preserving measurement precision through multi-level processing.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Productivity

If multiple objects are clustered into one trajectory, then tracking computation is reduced, but individual object trajectories cannot be captured, deteriorating user experience

Engineering Contradiction:
Improvetracking computation efficiencyVSAvoidindividual object trajectory information
Core Design Contradiction:
ProductivityVSLoss of information

Solution Approach 1:

The patent segments trajectory tracking into cluster-level tracking and individual object tracking. The system first tracks the cluster as a whole to maintain computational efficiency, then segments the tracking process to capture individual object trajectories within the cluster, preventing information loss while maintaining productivity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces an intermediary clustering layer that acts as a mediator between individual objects and the tracking system. This intermediary structure allows the system to process objects efficiently in groups while still capturing individual trajectories through the cluster, balancing computation efficiency with information preservation.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Area of stationary object

If closely spaced objects are detected using traditional clustering, then the detection range is expanded, but the ability to distinguish and locate individual objects deteriorates

Engineering Contradiction:
Improvedetection rangeVSAvoidindividual object location accuracy
Core Design Contradiction:
Area of stationary objectVSMeasurement precision

Solution Approach 1:

The patent adds a hierarchical dimension to the detection space, organizing objects into clusters at one level and individual objects at another level. This dimensional structure allows the system to maintain broad detection coverage while achieving precise individual object location through the multi-level organizational framework.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent segments the detection space into cluster regions and individual object regions. By dividing the detection area into hierarchical segments, the system can efficiently monitor large areas through clustering while simultaneously maintaining precise location accuracy for individual objects within each segment.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4700705A1Target detection method and apparatus, device, and computer-readable storage medium
Publication Date: 2026.02.25 SHENZHEN LUMIUNITED TECH CO LTD
  • EP4700705A1 patent drawingFigure 1
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AI summary

The present disclosure relates to a target detection method and apparatus, a device, and a computer-readable storage medium. Specifically, the method comprises: displaying a target detection page; acquiring position information of a target object in a target space, wherein the position information is determined by motion trajectory data of the target object in the target space; and, in the target detection page, displaying in real time a position mark corresponding to the target object, wherein the page position of the position mark is determined on the basis of the position information of the target object in the target space.