CREATE_DCT_MATRIX

Name

CREATE_DCT_MATRIX

Purpose

This function computes the DCT matrix that can be used in place of the
discrete cosine transform for square, two-dimensional block data. This
matrix, M, is used as Y = M ## X ## M' to compute the DCT, Y, of the
square, two-dimensional data array X.

Calling Sequence

Result = CREATE_DCT_MATRIX( dimension )

Inputs

dimension
A scalar describing the dimension of the square DCT matrix to be
determined. This parameter specifies the number of columns/row
in the returned matrix.

Keyword Parametrs

None

Return Value

Result is a double precision, floating point array containing the coefficients
to compute the DCT of any block array of the specified size.

Side Effects

None

Requires

None

Modification History

Written by: Carl Salvaggio
February, 2009 Original code

Disclaimer

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or merchantability. The author and/or distributors of this source code may
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whether to use this source code.
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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.