This function produces a block DCT image (or its inverse) from the
provided input data.
Result = DCT_BLOCK( image, blockDimension, INVERSE=inverse )
A two-dimensional array containing the data to be block DCT
A scalar describing the dimension of the square DCT blocks that are
to be formed in the image.
A keyword parameter that if set will cause the provided image data
to be treated as block DCT coefficients and cause the function to
perform an inverse transformation to provide the spatial domain
representation of the data.
Result is a double precision, floating point array containing either the
block DCT or its inverse for the provided data.
Written by: Carl Salvaggio
February, 2009 Original code
This source code is provided "as is" and without warranties as to performance
or merchantability. The author and/or distributors of this source code may
have made statements about this source code. Any such statements do not
constitute warranties and shall not be relied on by the user in deciding
whether to use this source code.
This source code is provided without any express or implied warranties
whatsoever. Because of the diversity of conditions and hardware under which
this source code may be used, no warranty of fitness for a particular purpose
is offered. The user is advised to test the source code thoroughly before
relying on it. The user must assume the entire risk of using the source code.