Evidence Manager Tutorial 58:

Manually Tracking Elements


CH1: Overview

CH2: Configuring Evidence Manager

CH3: Managing Devices

CH4: Managing Docking Stations

CH5: Managing Evidence

CH:6 Using Evidence Player

CH7: EM Redaction

CH8: Reference Reads


The manual tracking method involves the use of Manual Track elements. When you choose the Manual Track bounding box type, Evidence Manager redacts the element along a path that you plot. Evidence Manager does this by first having you “draw” a path, and then remembering the path while redacting the element.

Manual Track bounding boxes appear in red. Use this method if you wish to redact elements that might be partially obscured when stationary, or might be moving in such a way that they might not be detected.

Consider a scenario where a placard bearing a person’s name appears at 00:46 seconds in the video. However, the placard moves around for the next 15 seconds, and is partially obscured multiple times. This means that Evidence Manager might not be able to detect the element as long as it is seen. This is when you use the Manual Track element, and then proceed to plot a path along which it travels.

To manually track an element:

  1. Make sure you performed all the steps described in Pre-redaction Tasks.
  2. If needed, play the video to determine the elements that need to be redacted.
  3. Locate the redaction options at the bottom of the Evidence Manager window, next to the player controls.

NOTE: Quick Access from the Application Toolbar

Some of the redaction menu options also have quick access icons on the application toolbar. The application toolbar is located beneath the top menu bar.

  1. Locate the element you want to redact at multiple places. For example, you might want to redact a license plate that appears in the last 1 minute of a video, but is partially hidden in the last 15 seconds.
  2. Stop playing the video.
  3. Draw a box around this element. Initially, you will see a filled box.
  4. Release the cursor. A context menu appears.

NOTE: Clicking Help

If you click Help in the context menu, Evidence Manager will open the Evidence Manager User Guide.

  1. On the window, click Manual Track. The box now changes to a box with red boundary.
  1. Resize and reposition as necessary, and click Accept in the player controls area.

A Manual Track video element is listed in the Video Elements for Redaction pane. A numerical value in the bounded area represents the chronology that Evidence Manager assigns when it detects the element.

After the redaction operation completes, do the following:

  • To view the element that will be redacted, click the Play button. A green bounding box appears around the element you chose, indicating that the chosen element will be redacted throughout the video at the location where it is present.
  • To preview the redacted elements in the video, click the Preview Redaction icon.

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