Introduction

Markerless tracking in Unity goes beyond mere placement of digital content; it enables dynamic interactivity in Augmented Reality (AR) applications. By activating scripts based on tracking events, developers can create immersive AR experiences. This article explores how to harness markerless tracking for building recognition and outlines a step-by-step guide for implementation.

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Harnessing Markerless Tracking for Building Recognition

Unity’s markerless tracking facilitates the overlay of historical information onto real-world structures, enhancing user experience. Developers can create interactive elements triggered by tracked objects, enriching the AR encounter.

Step-by-Step Guide to Building Recognition with Markerless Tracking

• Capture a Reference Image:

  • Capture a clear image of the building from the user’s perspective.

• Import and Create a Tracking Target:

  • Import the image into Unity.

  • Utilize Unity tools to establish a virtual representation of the building.

• Attach a Script to the Tracking Target:

    using UnityEngine;
  
    public class BuildingTracker : MonoBehaviour
    {
        private ParticleSystem particleSystem;
        private bool tracked = false; // Customize 'tracked' variable based on tracking status.
  
        void Start()
        {
            particleSystem = GetComponent<ParticleSystem>();
        }
  
        void Update()
        {
            if (tracked)
            {
                particleSystem.Play();
            }
            else
            {
                particleSystem.Stop();
            }
        }
    }
  

• Implement Desired Actions:

  • Within the script, define actions (e.g., particle effects, sounds) upon successful tracking.

Markerless tracking, also known as environment or image tracking, uses computer vision algorithms to identify real-world features, allowing seamless integration of digital content without physical markers.

Unity’s markerless tracking, in tandem with script activation, transforms AR possibilities. Developers can create interactive, adaptive experiences, blurring the lines between the digital and physical worlds. By understanding this technology, AR development reaches new heights.

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Links:

Good read: https://www.mdpi.com/2071-1050/11/16/4268