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Setting Keyframes in a Sequence

Keyframes represent the best frames in a sequence to perform a particular function, in this case tracking. PointCloudGenerator can analyze the sequence for you, automatically picking frames with good parallax, or you can set keyframes manually by marking the frames yourself.

Setting Keyframes Automatically

1.

Click Analyze Sequence.

PointCloudGenerator walks the sequence, adding keyframes in suitable areas.

2.

Once the process is complete, scrub the playhead and use the Calculated Accuracy field to evaluate the keyframes - values closer to 1 indicate a high accuracy.

Note:  You can also add keyframes to the sequence manually. See below for more information.

3.

Proceed to Tracking a Dense Point Cloud.

Setting Keyframes Manually

1.

Scrub the playhead to the frame you want to mark as a keyframe and click Add,

OR

Set the Frame Spacing field to the number of frames between keyframes throughout the sequence and click Add All.

For example, if you set this value to 2, keyframes are set at every other frame throughout your sequence.

2.

If necessary, click Delete to remove the keyframe at the current playhead position or click Delete All to remove all keyframes.

Note:  The keyframes generated automatically using Analyze Sequence are not deleted.

3.

Proceed to Tracking a Dense Point Cloud.