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  1. 3D & Motion Graphics
  2. Adobe After Effects
Cgi

Understanding 3D Camera Tracking: Part 1

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Difficulty:IntermediateLength:ShortLanguages:

1. Importing Footage

Step 1

Open After Effects.

Step 2

Go to Composition > New Composition to make a new composition. Alternatively, you can press Ctrl-N keys. It opens the Composition Settings window. 

Set the Width and Height values to 1280 and 720 respectively. Set the Frame Rate to 30 and Duration to 15 seconds. Click on OK.

Step 3

Go to File > Import > File to import the image sequence. Alternatively, you can press Ctrl-I keys. 

With the first image of the image sequence selected, turn on JPEG Sequence option. Click on Open. You can find the image sequence attached with this tutorial.

Step 4

With the image sequence selected, drag and drop it inside the composition. You'll see the footage in the comp view.

2. Camera Tracking in After Effects

Step 1

With the image sequence layer selected, go to Animation > Track Camera.

Step 2

The 3D camera tracker system starts analysing the footage. It analyses the footage in two steps.

Step 3

After a couple of seconds, the analyse process ends. Now you can see several track points in the scene. 

Step 4

These track points would help to generate the text and the camera. You need to select at least four points to generate the helping dummy or layer. Select several track points on the houses as shown in the following image.

Step 5

With the points selected, secondary-click the mouse and select Create Text and Camera

Step 6

You get a Text and 3D camera in the timeline. The text sticks with the footage and follows the camera.

Step 7

With the help of Rotation Tool, rotate the text to face the camera.

Step 8

Go further in the scene and select the indicated track points.

Step 9

With the points selected, secondary-click the mouse and select Create Text

Step 10

You get another Text in the scene.

Step 11

With the help of Rotation Tool, rotate the text to face the camera.

Step 12

Adjust the position of the text in the scene by playing with the values of Position property.

3. Creating Depth of Field

Step 1

To create depth of field effect, go to 3D Tracker Camera layer and turn on Depth of Field option. 

Set the values of Focus Distance and Aperture to 3500 and 150 respectively.

4. Creating Reflection

Step 1

Create a duplicate layer of the text layer by pressing Ctrl-D key. Invert the duplicate text layer upside down as shown in the following image.

Step 2

Decrease the opacity of the inverted layer. With the layer selected, press T key on the key board and decrees the Opacity value to 8.

Step 3

Go to Effect > Distort > Ripple and apply the effect to the reflection layer.

Step 4

Go to Effect > Blur and Sharpen> Gaussian Blur and apply the effect to the reflection layer. Set the value of blur to 25.

Step 5

Press the Play button. You'll see the text layers are attached to the scene and following the camera perfectly.

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