Apple Shake 4 Tutorials Manual de usuario Pagina 93
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Chapter 3 Depth Compositing 93
Working With Z Channels
Most compositing depends on the information in the R, G, B, and alpha channels to
create a final composite. An optional channel, called the Z channel, stores depth
information as a grayscale image. Unlike the alpha channel or a rotoshape, the Z
channel represents perceived distances from the viewing plane and image masks in
varying degrees, allowing elements to appear in front of and behind other elements in
the composite. Lighter values are interpreted as being closer to the viewing plane.
Progressively darker values indicate increased distance from the viewing plane.
Launching Shake Projects From Terminal
Here’s something you can try to speed up your workflow in Shake: Open a Terminal
window and enter simple commands that perform the compositing functions before
you launch the Shake interface.
The following steps provide an alternative way to read images into Shake:
1 Open Terminal, found in the Applications/Utilities folder.
2 In the Terminal window, type the following:
cd nreal/Tutorial_Media/Tutorial_03/images/depth
The “cd” command tells Terminal to change directories according to the specified
path.
3 At the Terminal prompt, type:
shake balloons.iff city_/jointfilesconvert/1578512/bg.jpg city_/jointfilesconvert/1578512/bg_depth.jpg -gui
4 Press Return.
The “shake” command tells Terminal to read in three image files, and the “-gui”
command at the end of the line prompts Terminal to open the Shake graphical user
interface.
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- 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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