Apple Shake 4 Tutorials Manuel d'utilisateur Page 92
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92 Chapter 3 Depth Compositing
Simulated Depth and 3D Compositing
In this tutorial, you’ll use various methods to create the illusion of depth in composites.
You can simulate 3D transformations by positioning, scaling, and rotating the images in
the composite. Shake can also perform Z channel operations to filter and mask
elements, according to the perceived distance from the “camera” or viewing plane.
The MultiPlane node provides another method by compositing elements in 3D space
(with x, y, and z axes). Animated camera moves simulate the change in depth and
perspective. You can also import animation data from third-party software, and utilize
the “camera” and point cloud data in the MultiPlane 3D compositing space.
The images for this tutorial were produced by Adonic Film, Los Angeles.
Setting Up the Depth Composite
Start by reading in the images for the first project. You’ll use these images to review
basic information about compositing for simulated depth.
To read in the images for a Z channel composite:
1 In a new Shake script, insert an Image–FileIn node.
2 When the File Browser appears, navigate to $HOME/nreal/Tutorial_Media/Tutorial_03/
images/depth.
Shift-click to select balloons.iff, city_/jointfilesconvert/1578512/bg.jpg, and city_/jointfilesconvert/1578512/bg_depth.jpg. Then click OK.
You’ll see the following nodes in the Node View. The balloons.iff image has the Z
channel embedded in the file.
- Tutorials 1
- Contents 3
- Welcome to Shake 4 7
- Installing the Tutorial Media 8
- Mac OS X Notes 8
- Control vs. Command 9
- Shake Basics 11
- A Tour of the Basics 12
- Using the Shake Panels 13
- Contextual Help 14
- Shortcut Menus and Lists 14
- Chapter 1 Shake Basics 15 15
- Loading Images 16
- Chapter 1 Shake Basics 17 17
- Browsing Tips 18
- Working With Thumbnails 19
- 20 Chapter 1 Shake Basics 20
- Chapter 1 Shake Basics 21 21
- 22 Chapter 1 Shake Basics 22
- Panning, Zooming, and Framing 23
- Setting the Frame Range 23
- Working With Windows 24
- Launching a Flipbook 24
- Flipbook Controls 25
- Compositing Elements 26
- Chapter 1 Shake Basics 27 27
- 28 Chapter 1 Shake Basics 28
- Chapter 1 Shake Basics 29 29
- 30 Chapter 1 Shake Basics 30
- Setting Resolution 31
- 32 Chapter 1 Shake Basics 32
- Filtering and Masking 33
- Tuning Parameters 34
- Chapter 1 Shake Basics 35 35
- 36 Chapter 1 Shake Basics 36
- Working With Layer Nodes 37
- 38 Chapter 1 Shake Basics 38
- Chapter 1 Shake Basics 39 39
- Transforming an Image 40
- Fading an Element 41
- 42 Chapter 1 Shake Basics 42
- Rendering a Sequence 43
- About File Names 44
- Batch Rendering in a Shell 45
- 46 Chapter 1 Shake Basics 46
- Intermediate Skills 47
- Inserting Nodes Into a Tree 48
- Optimizing With SetDOD 51
- Grouping Nodes 53
- Using the Time View 55
- Black No frames repeat 59
- Button Mode Result 59
- Creating Motion Blur 66
- Motion Blur Parameters 67
- Importing Photoshop Files 71
- Curve Editing Tips 79
- Color Correction 80
- R channel value 85
- B channel value 85
- Green channel value 86
- Before Mult After Mult 90
- Depth Compositing 91
- Working With Z Channels 93
- Displaying Z Channels 95
- Adjusting Z Depth 101
- Fading With Distance 107
- This part of the mask is 108
- After adjustment, the 108
- Original image 111
- Animating a MultiPlane Camera 121
- • L5_cameraDistance = 1500 128
- • L4_cameraDistance = 1200 128
- • L3_cameraDistance = 1000 128
- • L2_cameraDistance =800 128
- • L1_cameraDistance = 700 128
- Click here to hide the 131
- Working With Expressions 133
- Creating Flicker on the Light 140
- • rndVal is set to rnd(time) 143
- Outside1 Crop1 153
- • Set xPan to 153 158
- • Set yPan to 87 158
- • Set xAngle to –7.5 159
- • Set yAngle to –25 159
- • Set zAngle to –195 159
- • Leave center (x, y) at 80 159
- KeepValue mode KeepSlope mode 160
- Using Keylight 163
- Using Keylight to Pull a Key 164
- Advanced Keylight Techniques 175
- The Joy of JPEG 176
- Using a Holdout Matte 179
- Keylight1 alpha HoldKey alpha 180
- Using Primatte 183
- Inner Mechanics of Primatte 186
- Managing Operators 190
- Masking Primatte 191
- Attach a Holdout Matte 192
- Spill Suppression in Primatte 194
- Tracking and Stabilization 201
- Stabilizing an Image Sequence 202
- Using the MatchMove Node 208
- Adjust the Sign Position 216
- Before After 218
- No shadow With AddShadow 221
- Frame 1 Frame 30 224
- Working With Macros 225
- Creating a Handmade Macro 226
- -Rotate2.angle 227
- Starting the Macro Format 230
- Saving and Testing the Macro 232
- How to Set Slider Ranges 237
- Creating Clean Plates 243
- Not aligned 256
- Shift-drag to position 258
- Clone source 258
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