Understanding 3D Camera Tracking: Part 5

Understanding 3D Camera Tracking: Part 5


Preview

1. Creating Crater

Step 1

Start 3ds Max and
open the file that was saved in the last part of the tutorial.

Start 3ds Max
Start 3ds Max 

Step 2

Delete all placeholders
to create the crater from scratch.

Delete all placeholders
Delete all placeholders

Step 3

Create a plane with Length
Segments
and Width Segments as 150 each.

Create a plane
Create a plane 

Step 4

Press M to open Material Editor.

Material Editor
Material Editor

Step 5

With an empty slot selected, click on Get
Material
icon. It opens the Material/ Map Browser window. Select Gradient
Ramp
map.

Get Material icon
Get Material icon

Step 6

Create the ramp as show in the following image.

Create the ramp
Create the ramp

Step 7

Set the Gradient
Type
to Radial, Noise Amount to 0.5 and Noise Type
to Fractal.

Gradient Type
Gradient Type

Step 8

Double-click on the map slot to see the map
clearly. The black part shows the depth and the white part shows the surface.

Black and white map
Black and white map

Step 9

Apply Displace
modifier on to the plane.

Displace modifier
Displace modifier

Step 10

Drag and drop the Gradient Ramp map to the Map
section of Displace modifier as shown in the following image.

Gradient Ramp map
Gradient Ramp map 

Step 11

Increase the
value of Strength as shown in the following image.

Increase the value of Strength
Increase the value of Strength

Step 12

The crater looks
like as shown in the following image.

The crater looks like as shown in the following image
The crater looks like as shown in the following image

Step 13

With the second empty slot selected, drag and drop
the Gradient Ramp map to the Diffuse channel of the second empty
slot. Apply this material to the ground.

Gradient Ramp map
Gradient Ramp map

Step 14

Apply soil
texture to the black and grey ramp points as shown in the following image.

Apply soil texture
Apply soil texture

Step 15

You get the crater texture as shown in the
following image.

The crater texture
The crater texture

Step 16

Apply 3-Point lights to lit the scene according to
the live background plate.

Apply 3-Point lights
Apply 3-Point lights 

Step 17

Press F10 to open Render Setup window. Render the frame with
alpha channel till the desired range. You can choose either TGA or PNG
file format for alpha channel.

Render Setup window
Render Setup window

2. Compositing in After Effects

Step 1

Open After Effects and import the
rendered frames
to the timeline. Bring in the live action footage as well and place it below the 3d rendered framers.

Open After Effects
Open After Effects

Step 2

With the rendered frames
layer selected, Right Click on it and go
to Blending Mode > Darken.

Blending Mode  Darken
Blending Mode > Darken

Step 3

Hit the Play button and you will see
the 3D rendered scene matching perfectly with the live footage.

Hit the Play button
Hit the Play button

Conclusion

In the next part of the tutorial, I’ll show you some different ways to track the footage in different software.



Source link

https://avasta.ch

Leave a Comment

Your email address will not be published. Required fields are marked *

*
*