Eagle Eye Networks

Motion Detection vs. Analytics

January 19, 2018 Eagle Eye Networks

motion-vs-analytics-blog-image-c

The Eagle Eye Cloud Security Camera VMS includes an integrated motion detection and object-based analytics system. This provides a variety of features, which recognize motion and objects in your video, and can be used to send intelligent notifications. To help decide which feature(s) will work best for you, we have broken down their functions below. If you have any additional questions, please don’t hesitate to contact us at +1-512-473-0500.

Features

Motion Detection is included with all camera subscriptions. It can be used to generate alerts and control when a camera records full video.

Object Counting, Line Crossing, and Intrusion Detection are all video analytics, available as an add-on to any camera subscription.

  • Intrusion Detection – Generates alerts when an object is detected within a defined area.
  • Line Crossing – Tracks objects and knows when they cross a designated line. Alerts can be generated when the line is crossed in a specific direction. For example, a camera pointed towards an exit door can generate alerts when someone leaves the building. This is different than Intrusion Detection, which can alert when an object enters a designated area from any direction.
  • Object Counting – Tracks objects when they cross a designated line and provides a real-time count on-screen in the video preview. Alerts are not generated. 

Which is better, Motion Detection or Intrusion Detection? 

Motion Detection works on changing pixels which means motion can be triggered by anything moving in the video. This means trees, reflections, flying insects when using night vision, will be seen as motion.

Using the default settings, motion will never be missed in a scene. If your goal is to minimize recorded events, saving time when it comes to viewing them, this can be a challenge depending on the type of scene. For example, an outdoor camera, which has a lot of moving plants or trees due to the wind, or an indoor scene near a window, which has reflections, will trigger motion. Regions can be used to mask motion detection around these areas, but it can be difficult to only trigger motion when a person or car is in the scene.

Using Analytics as event-based recording. Object detection is better in this scene because the moving trees and bushes are ignored.
<em>Using Analytics as event based recording Object detection is better in this scene because the moving trees and bushes are ignored<em>

Why does it matter? Reducing the amount of video to sort through makes a big difference when you need to find an event.  If you have low bandwidth, adjusting the motion detection is even more important, because all full resolution video where motion occurs is transmitted to the Eagle Eye Cloud.

Example of trees and bushes not being detected by Analytics.
<em>Example of trees and bushes not being detected by Analytics<em>

Motion Events and Analytic Events are shown in the history browser, making them easy to find. Graphs are also available for both. 

  • Dark Blue – Full Video
  • Light Blue – Motion Events
  • Light Green – Analytic Events
  • Dark Green Marks – Object Counting, Line Crossing, and Intrusion Detection
Analytics and Motion Detection displayed in History Browser.
<em>Analytics and Motion Detection displayed in History Browser <em>
Motion Detection and Analytic Object Detection capturing the same person.
<em>Motion Detection and Analytic Object Detection capturing the same person<em>
Motion Detection is triggered by reflections, but Analytic Object Detection ignores the reflections.
<em>Motion Detection is triggered by reflections but Analytic Object Detection ignores the reflections<em>

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