DWINoiseGenerator  [--returnparameterfile <std::string>]
                      [--processinformationaddress <std::string>] [--xml]
                      [--echo] [--snr <double>] [--noisesigma <double>]
                      [--noisetype <GAUSSIAN|RICIAN>] [--mask
                      <std::string>] [--b0 <std::string>] [--] [--version]
                      [-h] <std::string> <std::string>


   --returnparameterfile <std::string>
     Filename in which to write simple return parameters (int, float,
     int-vector, etc.) as opposed to bulk return parameters (image,
     geometry, transform, measurement, table).

   --processinformationaddress <std::string>
     Address of a structure to store process information (progress, abort,
     etc.). (default: 0)

     Produce xml description of command line arguments (default: 0)

     Echo the command line arguments (default: 0)

   --snr <double>
     Sigma is defined as 1/SNR.

   --noisesigma <double>
     Sigma value denoting noise level.

   --noisetype <GAUSSIAN|RICIAN>
     Noise type. (default: RICIAN)

   --mask <std::string>
     3D mask image.

   --b0 <std::string>
     3D image that contains DWI data S(0) with b=0. If it is not set, we
     assume S(0)=1.

   --,  --ignore_rest
     Ignores the rest of the labeled arguments following this flag.

     Displays version information and exits.

   -h,  --help
     Displays usage information and exits.

     (required)  Vector image that contains the DWI data.

     (required)  Vector image that will contain the DWI data with noise.

   Description: Add noise to a set of DWI data.


   DWINoiseGenerator dwi_b1000.nii.gz  dwi_b1000_noise.nii.gz --snr

   Author(s): Jian Cheng (jian.cheng.1983@gmail.com)