MATLAB VIDEO AND IMAGE PROCESSING BLOCKSET 3 User's Guide Page 17
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Working w ith the Documentation
• MATLAB, to write scripts and functions w ith M-code, and to use functions
with the command-line interface
• Simulink,tocreatesimplemodelsasblockdiagramsandsimulatethose
models
What Chapter Should I Read?
Follow the procedures in this guide to become familiar with the blockset’s
functionality. The User’s Guide contains tutorial sections that are designed
to help you become familiar w ith using Simulink and Video and Image
Processing Blockset:
• Read Chapter 1, “Getting Started” to learn about the installation process,
the products required to run Video and Image Processing Blockset, and to
view Video and Image P rocessing Blockset dem os.
• Read Chapter 2, “Importing and Exporting Video” to understand how video
is interpreted by Simulink. You also learn how to bring video data into a
model, display it on your monitor, and export it to an AVI file.
• ReadChapter3,“WorkingwithMPlay”tolearnhowtousetheMPlay
GUI to v ie w videos that are represented as variables in th e MATLAB
workspace. You can also learn how to use it to view video files or video
signals in Simulink models.
• Read C hapter 4, “Conversions” to learn how to convert an intensity image
to a binary image, how to convert color in formation be t ween color spaces,
and how to downsample the chroma components of an image.
• Read Chapter 5, “Geometric Transformation” to understand how blocks in
the G eom etric Transformations library inte rpolate value s. You also learn
how to rotate, resize, and crop images.
• Read Ch apter 6, “Morphological Operations” to learn about morphological
operations and which blocks can b e used to perform them. For example,
you learn how to count objects in an image and correct for nonuniform
illumination.
• Read Chapter 7, “Analysis and Enhancement” to learn how to sharpen, blur,
and remove noise from images. You also learn how to find object boundaries
and calculate the histogram of the R, G, and B values in an image.
1-9
- VideoandImagePro 1
- User’s Guide 1
- 508-647-7000 (Phone) 2
- 508-647-7001 (Fax) 2
- The MathWorks, Inc 2
- 3 Apple Hill Drive 2
- Natick, MA 01760-2098 2
- Revision History 3
- Contents 5
- Working with MPlay 6
- Conversions 6
- Getting Started 9
- 1 Gettin g Started 10
- Installation 11
- Product Demos 13
- Viewing the Documentation 15
- What Chapter Should I Read? 17
- Key Blockset Concepts 19
- Defining Intensity and Color 21
- From File block dialog box 23
- Key Blockset Con cepts 25
- Coordinate Systems 27
- Sample Time 29
- Normal and Accelerator Mode 31
- Neares t neighbor 33
- Block Data Type Support 36
- Image Credits 40
- Importing and Exporting 41
- Working with AVI Files 42
- Exporting to AVI Files 46
- Same as input 47
- Importing and Exporting Video 48
- Intensity 50
- [[5 10]' [80 10]'] 54
- %d' 55
- '%s region 57
- 'Frame %d' 59
- Video only 60
- WorkingwithMultimediaFiles 65
- Separate color signals 66
- Exportin 67
- Fi xed- step 70
- Working with Audio 71
- Working with Multimedia Files 73
- 3 Working with MPlay 78
- Viewing Video Files 82
- 7 Experim 85
- IntensitytoBinaryConversion 88
- 4 Positi 89
- Connect the 91
- Autothreshold Block 93
- Color Space Conversion 100
- 4 Conversions 102
- Chroma Resampling 105
- Symmetric 107
- No pad ding 107
- Fixe d-st ep 111
- Geometric Transformation 113
- Interpolation Overview 114
- Bilinear Interpo lation 115
- 5 Geometri c Transformation 116
- 0 0 0 1 1 2 2 3 3 0 0 0 0 117
- 0 0 0 4 4 5 5 6 6 0 0 0 0 117
- 0 0 0 7 7 8 8 9 9 0 0 0 0 117
- Rotating an Image 118
- Expanded to fit 121
- Free running 121
- Resizing an Image 125
- Cropping an Image 132
- Morphological Operations 139
- Over view of Morphology 140
- CountingObjectsinanImage 141
- 6 Morphological Operations 142
- 'disk',15) 151
- Analysis and Enhancement 157
- Feature Extraction 158
- 7 Analysis and Enhancement 160
- Finding Lines in Images 165
- Zero-based 169
- Image Enhancement 183
- Separat e color signals 185
- I array at the output ports 185
- Separate color signals 185
- Pixel Statistics 215
- Separate color signa ls 217
- Example Applications 223
- Pattern Matching 224
- 8 Example Applications 226
- Fixed-step 229
- Motion Compensation 231
- Image Compression 233
- Accelerator mode 1-23 247
- Normal and Accelerator 1-23 250
- Normal mode 1-23 250
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