WNMF/NOTES at master · gimmy/WNMF · GitHub

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!! PGMA_READ_DATA reads the data in an ASCII PGM file.
!
!  Licensing: GNU LGPL license.
!  Author:  John Burkardt
!
!  Parameters:
!
!    Input, integer ( kind = 4 ) FILE_IN_UNIT, the unit number of the file.
!
!    Input, integer ( kind = 4 ) ROW_NUM, COL_NUM, the number of rows and
!    columns of data.
!
!    Output, integer ( kind = 4 ) G(ROW_NUM,COL_NUM), the gray data.


!! PGMA_READ_HEADER reads the header of an ASCII PGM file.
!
!  Licensing: GNU LGPL license.
!  Author: John Burkardt
!
!  Parameters:
!
!    Input, integer ( kind = 4 ) FILE_IN_UNIT, the unit number of the file.
!
!    Output, integer ( kind = 4 ) ROW_NUM, COL_NUM, the number of rows and
!    columns of data.
!
!    Output, integer ( kind = 4 ) G_MAX, the maximum gray value.

PGMA_TO_PGMB Library (C++):
http://people.sc.fsu.edu/~jburkardt/cpp_src/pgma_to_pgmb/pgma_to_pgmb.html

PGMA_IO Library (Fortran90):
http://people.sc.fsu.edu/~jburkardt/f_src/pgma_io/pgma_io.html

Cambridge ORL face database:
http://www.cl.cam.ac.uk/research/dtg/attarchive/facedatabase.html
http://www.cl.cam.ac.uk/Research/DTG/attarchive/pub/data/att_faces.zip