mincmakescalar - convert vector minc files to scalar
[<options>] <in>.mnc <out>.mnc
converts vector minc files to scalar minc files. A vector
minc file is one that contains the dimension vector_dimension
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.
Note that options can be specified in abbreviated form (as long as they are
unique) and can be given anywhere on the command line.
- Create a MINC 2.0 format output file.
- Overwrite an existing file.
- Don't overwrite an existing file (default).
- Synonym for -noclobber.
- Print out progress information for each chunk of data copied
- Do not print out progress information.
- -buffer_size size
- Specify the maximum size of the internal buffers (in kbytes). Default is
- Create an output file with the same type as the first input file
- Store output voxels as 8-bit integers.
- Store output voxels as 16-bit integers.
- Store output voxels as 32-bit integers
- Superseded by -int.
- Store output voxels as 32-bit floating point numbers.
- Store output voxels as 64-bit floating point numbers.
- 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.
- 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.
- Compute the magnitude of each vector (default).
- Compute the average of the components of each vector.
- Convert RGB (3-component) files to greyscale using a linear combination
with standard set of weighting coefficients.
- 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
- Print summary of command-line options and exit.
- Print the program's version number and exit.
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
Copyright © 1997 by Peter Neelin