Enfocus PitStop Pro 11 Level B, 1Y, Maintence Informations techniques Page 142
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- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
screen ruling (for example 150 lpi) x 2 = image resolution (300 dpi)
Interpolation methods
Resampling, i.e. adding or deleting pixels, can be done in various ways, which are technically called
interpolation methods. If you wish to resample an image, you will have to select one of the following
interpolation methods:
•
Average Resampling
on page 142
•
SubSampling
on page 142
•
Bicubic Resampling
on page 142
•
Bilinear Resampling
on page 142
•
Bicubic B-Spline Resampling
on page 142
Average Resampling
Average downsampling calculates the average of the pixels in a sample area. This average later
substitutes the entire area with the average pixel color at the specified resolution.
SubSampling
Subsampling means that a pixel in the center of the sample area becomes the reference point.
The surrounding pixels take the value of that center pixel. In fact, the center pixel replaces the
entire area at the specified resolution. Subsampling goes faster than downsampling but may result
in images that are less smooth and continuous.
Bicubic Resampling
Bicubic resampling is a slow but more precise method, resulting in the smoothest tonal gradations.
The value of the new pixels is calculated on the basis of a weighted average of the values of the
corresponding group of pixels in the original image. Interpolation is done between 16 pixels in the
original image with a slight sharpening effect.
Bilinear Resampling
Bilinear resampling is a medium-quality interpolation method which uses weighted interpolation
between 4 pixels in the original image.
Bicubic B-Spline Resampling
B-Spline is a modified bicubic interpolation with more sharpening effects and is recommended
for upsampling. Bicubic downsampling usually yields better results than the simple averaging
method of downsampling.
To resample a single image
1. Using the Select Objects tool , select a pixel image.
2. Choose Window > Show Enfocus Inspector or click the Show Inspector button to display
the Enfocus Inspector.
3. Cick the Image > Resample category.
4. Do one of the following:
142
Enfocus PitStop Pro
- Reference Guide 1
- Contents 2
- 1. Copyrights 12
- 2. Introduction 13
- Enfocus Preset Manager 22
- Smart Preflight 23
- Language of the PitStop 26
- Pro User Interface 26
- Enfocus Pack Manager 26
- Changing the 31
- Masking objects 31
- Creating a Database 33
- Sorting and grouping Presets 34
- 3.5 Workspaces 37
- 4. Working with PDF documents 46
- 4.4 Viewing object attributes 48
- D. Collapse button 49
- E. Fly-out button 49
- 4.5 Design Layouts 50
- Editing a Design Layout 51
- Applying a Design 55
- Layout to your Whole Document 55
- A. Trim marks 57
- B. Trim size 57
- C. Registration marks 57
- D. Bleed 57
- E. Media box 57
- A. Media box on page 59 59
- B. Bleed box on page 59 59
- C. Trim box on page 59 59
- D. Art box on page 59 59
- Media box 60
- B. Trim box on page 59 61
- C. Safe type zone 61
- D. Safety box 61
- 4.6 Working with Layers 62
- 5.1 What is preflighting? 64
- 5.2 Running a preflight check 66
- Certified PDF preflight 67
- Regular preflight 67
- 5.4 Problem reporting 74
- Locking a Preflight Profile 75
- Object Browser 78
- Solutions 78
- Sign-off 78
- 5.10 Annotated Reports 81
- 5.11 Automating preflighting 82
- 5.12 Smart Preflight 83
- 6.1 PDF workflow concept 91
- Certified PDF Preflight 96
- 6.7 Preflight and Verify 98
- 6.8 Certified PDF Preflight 98
- The Enfocus Preset Manager 100
- 6.12 Adding a session comment 102
- Saving a snapshot 104
- Comparing sessions 104
- To compare sessions 105
- Roll-back mechanism 107
- Saving snapshots 107
- PDF Specifications 108
- Online resource 108
- Subscribing member 109
- Contributing member 109
- 7. Editing objects 111
- Anchor points 113
- Direction points 113
- 7.3 Selecting objects 115
- 7.6 Replacing an object 118
- QuarkXPress,...) 120
- Fill attributes 121
- Stroke attributes 121
- 7.11 Rotating an object 126
- 7.12 Scaling an object 128
- 7.13 Moving an object 129
- 7.14 Shearing an object 132
- 7.16 Creating new shapes 135
- 7.17 Creating a new path 136
- 7.18 Editing a path 137
- To add an anchor point 139
- To remove an anchor point 139
- 7.20 Masking objects 140
- 7.22 Resampling pixel images 141
- Average Resampling 142
- SubSampling 142
- Bicubic Resampling 142
- Bilinear Resampling 142
- Bicubic B-Spline Resampling 142
- 7.23 Compressing pixel images 143
- 7.27 Selecting text 146
- 7.29 Editing a text paragraph 150
- 7.30 Editing vertical text 151
- Figure 66: Text 154
- 7.33 Splitting text segments 155
- Composite fonts 156
- A. Master 159
- B. Font property 159
- C. Design axis 159
- 7.35 PDF font substitution 160
- 7.38 Editing forms 162
- 7.39 Editing PDF2Go documents 164
- Acrobat 165
- 8. Global Changes 167
- Flip the page content 169
- Rotate the page content 169
- 8.5 Adding text 174
- 9.1 About Action Lists 176
- 9.2 Action types 178
- 9.3 Running an Action List 178
- Creating or editing an Action 179
- Using the Enfocus Navigator 179
- 9.5 Locking an Action List 185
- 9.6 Action Lists in practice 185
- Page boxes 187
- 9.7 Using QuickRuns 188
- 9.8 Further automation 190
- 10. Color management 191
- 10.4 Rendering intents 193
- Perceptual remapping 194
- Saturation remapping 194
- 10.5 Using spot colors 197
- To create spot colors 198
- To apply a spot color 198
- To edit spot colors 198
- To remap spot colors 198
- To duplicate a spot color 198
- 10.6 Using ICC profiles 200
- 10.8 Color conversion 203
- 11. Overprint 207
- Color spaces 210
- Enfocus PitStop Pro 226
- (continued) 229
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