Edge Feature Extraction¶
Computes edge features on every pixel of the input image selected channel
Detailed description¶
This application computes edge features on a mono band image
Parameters¶
This section describes in details the parameters available for this application. Table [1] presents a summary of these parameters and the parameters keys to be used in command-line and programming languages. Application key is EdgeExtraction .
| [1] | Table: Parameters table for Edge Feature Extraction. |
| Parameter Key | Parameter Type | Parameter Description |
|---|---|---|
| in | Input image | Input image |
| channel | Int | Int |
| ram | Int | Int |
| filter | Choices | Choices |
| filter gradient | Choice | Gradient |
| filter sobel | Choice | Sobel |
| filter touzi | Choice | Touzi |
| filter.touzi.xradius | Int | Int |
| filter.touzi.yradius | Int | Int |
| out | Output image | Output image |
| inxml | XML input parameters file | XML input parameters file |
| outxml | XML output parameters file | XML output parameters file |
Input Image The input image to compute the features on.
Selected Channel The selected channel index.
Available RAM (Mb) Available memory for processing (in MB).
Edge feature Choice of edge feature. Available choices are:
- Gradient
- Sobel
- Touzi
- The X Radius :
- The Y Radius :
Feature Output Image Output image containing the edge features.
Load otb application from xml file Load otb application from xml file.
Save otb application to xml file Save otb application to xml file.
Example¶
To run this example in command-line, use the following:
otbcli_EdgeExtraction -in qb_RoadExtract.tif -channel 1 -out Edges.tif
To run this example from Python, use the following code snippet:
#!/usr/bin/python
# Import the otb applications package
import otbApplication
# The following line creates an instance of the EdgeExtraction application
EdgeExtraction = otbApplication.Registry.CreateApplication("EdgeExtraction")
# The following lines set all the application parameters:
EdgeExtraction.SetParameterString("in", "qb_RoadExtract.tif")
EdgeExtraction.SetParameterInt("channel", 1)
EdgeExtraction.SetParameterString("out", "Edges.tif")
# The following line execute the application
EdgeExtraction.ExecuteAndWriteOutput()
Limitations¶
None
Authors¶
This application has been written by OTB-Team.