72 lines
3.1 KiB
Markdown
72 lines
3.1 KiB
Markdown
---
|
|
title: 'Track mode (basics)'
|
|
linkTitle: 'Track mode'
|
|
weight: 18
|
|
description: 'Usage examples and basic operations available during annotation in track mode.'
|
|
---
|
|
|
|
Usage examples:
|
|
|
|
- Create new annotations for a sequence of frames.
|
|
- Add/modify/delete objects for existing annotations.
|
|
- Edit tracks, merge several rectangles into one track.
|
|
|
|
1. Like in the `Shape mode`, you need to select a `Rectangle` on the sidebar,
|
|
in the appearing form, select the desired `Label` and the `Drawing method`.
|
|
|
|
|
|
|
|
1. Creating a track for an object (look at the selected car as an example):
|
|
|
|
- Create a `Rectangle` in `Track mode` by selecting `Track`.
|
|
|
|
|
|
|
|
- In `Track mode`, the rectangle will be automatically interpolated on the next frames.
|
|
- The cyclist starts moving on frame #2270. Let's mark the frame as a key frame.
|
|
You can press `K` for that or select the `star` button (see the screenshot below).
|
|
|
|
|
|
|
|
- If the object starts to change its position, you need to modify the rectangle where it happens.
|
|
It isn't necessary to change the rectangle on each frame, simply update several keyframes
|
|
and the frames between them will be interpolated automatically.
|
|
- Let's jump 30 frames forward and adjust the boundaries of the object. See an example below:
|
|
|
|
|
|
|
|
- After that the rectangle of the object will be changed automatically on frames 2270 to 2300:
|
|
|
|
|
|
|
|
1. When the annotated object disappears or becomes too small, you need to
|
|
finish the track. You have to choose `Outside Property`, shortcut `O`.
|
|
|
|
|
|
|
|
1. If the object isn't visible on a couple of frames and then appears again,
|
|
you can use the `Merge` feature to merge several individual tracks
|
|
into one.
|
|
|
|
|
|
|
|
- Create tracks for moments when the cyclist is visible:
|
|
|
|
|
|
|
|
- Select `Merge` button or press key `M` and select on any rectangle of the first track
|
|
and on any rectangle of the second track and so on:
|
|
|
|
|
|
|
|
- Select `Merge` button or press `M` to apply changes.
|
|
|
|
|
|
|
|
- The final annotated sequence of frames in `Interpolation` mode can
|
|
look like the clip below:
|
|
|
|
|
|
|
|
Read more in the section {{< ilink "/docs/manual/advanced/track-mode-advanced" "track mode (advanced)" >}}.
|