Digital Visual Effects, Spring 2012

MatchMove

Digital Visual Effects, Spring 2012

Winble 2012/04/26

WorkFlow

• Input

– Video – CGI Animation

WorkFlow

• Output

– Composite Video

Setting

•

– Version: 2.62

– Operating System

• Windows XP/Vista/7 32/64 bits, Linux, Mac OS X

– Web Site: http://www.blender.org/

•

– Version: 1.2.0 beta – Operating System

• Windows 95/98/NT/2000/Me/XP/Vista/7, Linux

Recipe: Get Image Sequence

1. Open Blender 2. Add Video File

– Change Window Type to Video Sequence Editor – Select Add → Movie

– Drag the strip to Layer 1

3. Render Images

– Choose Render – Frame

• Set frame size and resolution

• Choose output file type (Targa)

– Time interval → Select start and end of the sequence – Choose output directory

4. Click Animation button

Get Image Sequence : Blender Interface

Get Image Sequence : Add Video File

Click here to change window type

Change to Video Sequence Editor

Get Image Sequence : Add Video File

Add → Movie

Get Image Sequence : Add Video File

Select video file Add video file

Select file directory

Get Image Sequence : Add Video File

This is the sound track. Since we only need images for feature tracking, you can choose to remove it

here, and add it back at the video editing stage!

Get Image Sequence : Add video file

Right-click to Drag the strip to the “1^st Frame” in Layer 1

Get Image Sequence : Render Images

Select Start &

End frame Choose output

file type “Targa” Set output directory Set Frame size

& Resolution Click Here!

Recipe: Calibration

1. Open Voodoo

2. Open Image Sequence

– Select File → Open → Sequence – Select the first frame

– Select Move Type “Free Move”

3. Track →

4. Export Python Script

– Select File → Save → Blender Python Script – Save .py file

• Choose File type “Blender 2.5x and higher (*.py)”

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Calibration : Choose Sequence

File → Open → Sequence

Calibration : Choose Sequence

Choose “free move”

Only select 1^st frame

Note!!!

1. “free move” is for general moving conditions 2. “rotation (camera on tripod)” is for the

special case with only the rotation

Calibration : Choose Sequence

Unrecognized path

Calibration : Track

Track

Calibration : Track

Process Progress

Calibration : Export Python Script

File → Save

→ Blender Python script

Calibration : Export Python Script

Choose File type “Blender 2.5x and higher (*.py)”

Recipe: Import 3D Motions

1. Open Blender

2. Delete Default Objects

– Choose the object and click “Delete”

3. Open Python Script

– Change Window Type to Text Editor – Select Text → Open Text Block

– Select the .py file exported from Voodoo – Click Run Script

Recipe: Import 3D Motions

4. Load Background Images:

– Change Window Type to 3D View

– Select View → Cameras → Set Active Object as Active Camera

– Load background images

– Set the video parameters of background images – Change the view

• View → View Persp/Ortho

Import 3D Motions : Delete Default Objects

Click “Delete” to erase

Import 3D Motions : Open Python Script

Text → Open Text Block

Import 3D Motions : Open Python Script

Run Script

Back to “3D view”

Import 3D Motions : Adjust Rendering

To avoid rendering the

feature point cloud in your

result

Import 3D Motions : Adjust Rendering

Cancel the Renderability of

the feature point cloud

Import 3D Motions : Load Background Images

View → Cameras → Set Active Object as Active Camera

Import 3D Motions : Load Background Images

Click the “+” or View → Properties

Import 3D Motions : Load Background Images

Tick off “Background Images” &

click “Add Image” on the menu Click “Open”

Import 3D Motions : Load Background Images

Choose the 1^st frame image

Import 3D Motions : Load Background Images

Tick off “Auto Refresh”

Import 3D Motions : Load Background Images

View → View Persp/Ortho View → Front

Import 3D Motions : Load Background Images

You can adjust background image’s Opacity, Scale & Position

Import 3D Motions : Load Models

File → Import

→ “Model Type”

Import 3D Motions : Load Models

To use the model as a “single object” instead of many “small groups(components)” ,you can

close the group options

Import 3D Motions : Load Models

Model split by groups (for finer operations)

Import 3D Motions : Set Keyframes

Object → Animation → Insert Keyframe…

Import 3D Motions : Set Keyframes

Model parameters and

corresponding lock in keyframe

Choose Object Mode Lock the parameters in keyframe

Choose keyframe

Import 3D Motions : Set Keyframes

You can use

Object → Motion Paths → Calculate Paths to see the motion path of models

Motion Path

Import 3D Motions : Set Keyframes

Some notes

 Different camera views are helpful

• Fine adjust 3D position & shape

 Preview is your good friend

• Ensure your model condition shown in that frame

 Don’t forget the light (lamp)

• Preview won’t show the lighting

• Avoid model “in the dark”

 Unstable model motion

• Set more keyframes

• Split fast-moving video into more small-period clips

Recipe: Compositing

1. Add Image Sequence

– Change Window Type to Video Scene Editor – Select Add → Images and select all images – Drag the strip to the “1st Frame” in Layer 1

2. Add Scene

– Select Add → Scene

– Drag the scene strip to the “1st Frame” in Layer 2

3. Set Scene

Compositing: Add Image Sequence

Choose “Sequence Editor”

Add → Image

Compositing: Add Image Sequence

Select all images

Drag the strip to the “1^st Frame” in Layer 1

Compositing: Add Image Sequence

Compositing: Add Scene

Add → Scene → Scene

Compositing: Add Scene

Drag the scene strip to the “1^st Frame” in Layer 2

Compositing: Set Scene

View → Properties Set Blend “Alpha Over”

Compositing: Set Scene

Tick off “Premultiply” Select ”Voodoo_render_cam”

Compositing: Output Video

You can change

“Sequencer view”

to "Preview" or

"both“ to preview the result

Compositing: Set Scene

Set “Start Frame” and

“(Video) Length”

Set video Resolution, Frame Range (time) & Frame Rate

Compositing: Output Video

Select output video type Select output directory

Compositing: Output video

Click Animation! Example of Composited result

Reference

• Blender

– Official website

http://www.blender.org/

– 2.62 release log

http://www.blender.org/development/release- logs/blender-262/

– 2.61 demo files

http://www.blender.org/development/release-

Reference

• Blender

– Blender 2.6 Tutorial 17 - Camera Tracking

http://www.youtube.com/watch?v=qTwZO9Gi5yw http://www.youtube.com/watch?v=XZGx6UI0s2U – Match Moving Tutorial in Blender

http://www.youtube.com/watch?v=5oWctBTjGcI

– Basic video tutorial for 2.56 & 2.57 [1~8] [Older vision]

https://www.youtube.com/watch?v=WSj23GDGNiI

– Basic video tutorial for Blender and Voodoo [Older vision]

http://www.youtube.com/watch?v=kPZbtKQ1a4g http://www.youtube.com/watch?v=sO4kmT-n3lU

Reference

• Voodoo

– Python problem between Voodoo and Blender

• Voodoo camera tracker and blender 2.57 fixed http://0rz.tw/PqDVr

• Voodoo camera Import (io_import_voodoo_camera.py) [Official released]

http://0rz.tw/BNDm8

– Voodoo document website http://0rz.tw/c2ceR

CINEMA 4D + VOODOO – TUTORIAL

Reference

• Other Resources

– K-Lite Codec Pack

• Mega, Full, Standard and Basic

http://www.codecguide.com/download_kl.htm

– Video Editing Tools

• 威力導演、繪聲繪影、 …

• Sony Vegas, Adobe After Effects, Premiere, …

– Sound/Music Editing Tools

• Adobe Audition ( original cooledit ), Goldwave, …

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Thank you

for your attention!

Import 3D Motions : Open Python Script

Select io_import_voodoo_camera.py Run Python Script

Import 3D Motions : Open Python Script

File → Import → Voodoo camera