FineRegistration - Fine Registration

Estimate disparity map between two images.

Detailed description

Estimate disparity map between two images. Output image contain x offset, y offset and metric value.

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 FineRegistration .

[1]Table: Parameters table for Fine Registration.
Parameter Key Parameter Name Parameter Type
ref Reference Image Input image
sec Secondary Image Input image
out Output Image Output image
erx Exploration Radius X Int
ery Exploration Radius Y Int
mrx Metric Radius X Int
mry Metric Radius Y Int
w Image To Warp Input image
wo Output Warped Image Output image
cox Coarse Offset X Float
coy Coarse Offset Y Float
ssrx Sub-Sampling Rate X Float
ssry Sub-Sampling Rate Y Float
rgsx Reference Gaussian Smoothing X Float
rgsy Reference Gaussian Smoothing Y Float
sgsx Secondary Gaussian Smoothing X Float
sgsy Secondary Gaussian Smoothing Y Float
m Metric String
spa SubPixelAccuracy Float
cva ConvergenceAccuracy Float
vmlt Validity Mask Lower Threshold Float
vmut Validity Mask Upper Threshold Float
ram Available RAM (Mb) Int
inxml Load otb application from xml file XML input parameters file
outxml Save otb application to xml file XML output parameters file
  • Reference Image: The reference image.
  • Secondary Image: The secondary image.
  • Output Image: The output image.
  • Exploration Radius X: The exploration radius along x (in pixels).
  • Exploration Radius Y: The exploration radius along y (in pixels).
  • Metric Radius X: Radius along x (in pixels) of the metric computation window.
  • Metric Radius Y: Radius along y (in pixels) of the metric computation window.
  • Image To Warp: The image to warp after disparity estimation is completed.
  • Output Warped Image: The output warped image.
  • Coarse Offset X: Coarse offset along x (in physical space) between the two images.
  • Coarse Offset Y: Coarse offset along y (in physical space) between the two images.
  • Sub-Sampling Rate X: Generates a result at a coarser resolution with a given sub-sampling rate along X.
  • Sub-Sampling Rate Y: Generates a result at a coarser resolution with a given sub-sampling rate along Y.
  • Reference Gaussian Smoothing X: Performs a gaussian smoothing of the reference image. Parameter is gaussian sigma (in pixels) in X direction.
  • Reference Gaussian Smoothing Y: Performs a gaussian smoothing of the reference image. Parameter is gaussian sigma (in pixels) in Y direction.
  • Secondary Gaussian Smoothing X: Performs a gaussian smoothing of the secondary image. Parameter is gaussian sigma (in pixels) in X direction.
  • Secondary Gaussian Smoothing Y: Performs a gaussian smoothing of the secondary image. Parameter is gaussian sigma (in pixels) in Y direction.
  • Metric: Choose the metric used for block matching. Available metrics are cross-correlation (CC), cross-correlation with subtracted mean (CCSM), mean-square difference (MSD), mean reciprocal square difference (MRSD) and mutual information (MI). Default is cross-correlation.
  • SubPixelAccuracy: Metric extrema location will be refined up to the given accuracy. Default is 0.01.
  • ConvergenceAccuracy: Metric extrema will be refined up to the given accuracy. Default is 0.01.
  • Validity Mask Lower Threshold: Lower threshold to obtain a validity mask.
  • Validity Mask Upper Threshold: Upper threshold to obtain a validity mask.
  • Available RAM (Mb): Available memory for processing (in MB).
  • 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_FineRegistration -ref StereoFixed.png -sec StereoMoving.png -out FineRegistration.tif -erx 2 -ery 2 -mrx 3 -mry 3

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 FineRegistration application
FineRegistration = otbApplication.Registry.CreateApplication("FineRegistration")

# The following lines set all the application parameters:
FineRegistration.SetParameterString("ref", "StereoFixed.png")

FineRegistration.SetParameterString("sec", "StereoMoving.png")

FineRegistration.SetParameterString("out", "FineRegistration.tif")

FineRegistration.SetParameterInt("erx", 2)

FineRegistration.SetParameterInt("ery", 2)

FineRegistration.SetParameterInt("mrx", 3)

FineRegistration.SetParameterInt("mry", 3)

# The following line execute the application
FineRegistration.ExecuteAndWriteOutput()

Limitations

None

Authors

This application has been written by OTB-Team.