NAME

       mincmakescalar - convert vector minc files to scalar

SYNOPSIS

       mincmakescalar [<options>] <in>.mnc <out>.mnc

DESCRIPTION

       Mincmakescalar  converts  vector minc files to scalar minc files. A vector minc file is one that contains
       the dimension  vector_dimension as the fastest varying dimension of the image data and represents  vector
       data at each voxel such as RGB images or gradient volumes. A scalar minc file does not contain the vector
       dimension and represents grayscale or intensity data.

       A variety of conversion schemes are possible. The simplest is an average of the components of the vector.
       The magnitude of the vector at each voxel can also be computed. RGB volumes can be converted to greyscale
       by a standard linear combination. Finally, the user can supply  a  list  of  coefficients  for  a  linear
       combination of vector components.

       Some  options  will  require a specific number of components on the input vectors (RGB data should have 3
       components and the number of coefficients supplied for the linear combination should match the number  of
       components  on  the  input  vectors), but the program will also accept input scalar data and will copy it
       through without modification.

OPTIONS

       Note that options can be specified in abbreviated form (as long as they are  unique)  and  can  be  given
       anywhere on the command line.

General options

       -2     Create a MINC 2.0 format output file.

       -clobber
              Overwrite an existing file.

       -noclobber
              Don't overwrite an existing file (default).

       -no_clobber
              Synonym for -noclobber.

       -verbose
              Print out progress information for each chunk of data copied (default).

       -quiet Do not print out progress information.

       -buffer_size size
              Specify the maximum size of the internal buffers (in kbytes). Default is 10 MB.

       -filetype
              Create an output file with the same type as the first input file (default).

       -byte  Store output voxels as 8-bit integers.

       -short Store output voxels as 16-bit integers.

       -int   Store output voxels as 32-bit integers

       -long  Superseded by -int.

       -float Store output voxels as 32-bit floating point numbers.

       -double
              Store output voxels as 64-bit floating point numbers.

       -signed
              Create an output file with data stored in a signed type. This only has an effect if the one of the
              -byte, -short or -int options is specified.

       -unsigned
              Create an output file with data stored in an unsigned type. This only has an effect if the one  of
              the -byte, -short or -int options is specified.

       -valid_range min max
              Create  an  output file with integer data stored in the specified restricted range.  This only has
              an effect if the one of the -byte, -short or -int options is specified.

Conversion options

       -magnitude
              Compute the magnitude of each vector (default).

       -average
              Compute the average of the components of each vector.

       -rgbtogrey
              Convert RGB (3-component) files to greyscale using a  linear  combination  with  standard  set  of
              weighting coefficients.

       -rgbtogray
              Synonym for -rgbtogrey.

       -linear c1,c2,c3,...
              Compute  a  linear  combination  of the components of each vector using the specified coefficients
              (these weights must be given as a comma or space-separated list of numbers in  a  single  command-
              line  argument).  The  number  of  coefficients  must  match the number of components on the input
              vectors.

Generic options for all commands:

       -help  Print summary of command-line options and exit.

       -version
              Print the program's version number and exit.

EXAMPLES

       To convert an RGB file to an grayscale file:

          mincmakescalar -rgbtogrey rgb.mnc gray.mnc

       To compute the gradient magnitude from a gradient volume

          mincmakescalar -magnitude gradient.mnc magnitude.mnc

       To convert an RGB file to a grayscale file using a different set of weighting factors for red, green  and
       blue:

          mincmakescalar -linear '0.2,0.5,0.3' rgb.mnc gray.mnc

AUTHOR

       Peter Neelin

COPYRIGHTS

       Copyright © 1997 by Peter Neelin

                                          $Date: 2004-05-20 21:52:08 $                         MINCMAKESCALAR(1)