Object Tracking Device Adaptive Light Control

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Solution Overview

Problem

Conventional object tracking systems face inefficiencies due to unnecessary power consumption from light emitting elements that are not captured by the image-capturing device, as all elements are typically kept on, even if only a subset is visible.

Innovation Solution

An object tracking method and device that captures images of light emitting elements, determines the object pose based on visible elements, and turns off invisible elements to reduce power consumption without affecting tracking performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If all light emitting elements are kept on to ensure tracking visibility, then tracking reliability is improved, but power consumption increases

Engineering Contradiction:
Improvetracking reliabilityVSAvoidpower consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system dynamically adjusts the state of light emitting elements based on real-time tracking data and visibility assessment. Elements are switched between on and off states according to whether they are currently visible to the image-capturing device, making the system adaptive rather than static.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system uses feedback from the image-capturing device and object pose determination to control the light emitting elements. The controller receives information about which elements are visible and adjusts their state accordingly, creating a closed-loop control system that optimizes power consumption while maintaining tracking reliability.

Inventive Principle:
Principle #23Feedback

2Loss of energy

If light emitting elements are turned off to reduce power consumption, then energy efficiency is improved, but tracking performance may deteriorate

Engineering Contradiction:
Improveenergy efficiencyVSAvoidtracking performance
Core Design Contradiction:
Loss of energyVSReliability

Solution Approach 1:

Instead of keeping all light emitting elements on, the system applies partial action by activating only the subset of elements that are currently visible to the image-capturing device. This ensures sufficient lighting for tracking while avoiding the excessive energy consumption of illuminating all elements.

Inventive Principle:
Principle #16Partial or excessive action

3Measurement precision

If the image-capturing device captures all light emitting elements, then tracking accuracy is improved, but the device complexity increases

Engineering Contradiction:
Improvetracking accuracyVSAvoidsystem complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system segments the light emitting elements into visible and invisible groups based on the object pose and image-capturing device position. Only the visible segment is activated for tracking purposes, simplifying the control logic while maintaining tracking accuracy through selective illumination.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS12062189B2Object tracking method and object tracking device
Publication Date: 2024.08.13 HTC CORP
  • US12062189B2 patent drawing
  • US12062189B2 patent drawing
  • US12062189B2 patent drawing

AI summary

The embodiments of the disclosure provide an object tracking method and an object tracking device. The method includes: in a tracking state, controlling an image-capturing device to capture a first image of a specific object, wherein a plurality of light emitting elements are disposed on the specific object, and at least one first light emitting element of the light emitting elements is on and captured in the first image; determining a first object pose of the specific object based on the at least one first light emitting element of the light emitting elements in the first image; obtaining at least one second light emitting element of the light emitting elements based on the first object pose, wherein the at least one second light emitting element is estimated to be uncapturable by the image-capturing device; and turning off the at least one second light emitting element.