diff options
Diffstat (limited to 'help/en_US/dctmtx.xml')
| -rw-r--r-- | help/en_US/dctmtx.xml | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/help/en_US/dctmtx.xml b/help/en_US/dctmtx.xml index 0b05453..2594b48 100644 --- a/help/en_US/dctmtx.xml +++ b/help/en_US/dctmtx.xml @@ -17,14 +17,14 @@ <refnamediv> <refname>dctmtx</refname> - <refpurpose></refpurpose> + <refpurpose>Return the DCT transformation matrix of size N-by-N.</refpurpose> </refnamediv> <refsynopsisdiv> <title>Calling Sequence</title> <synopsis> - [y]=dctmtx(n) + T = dctmtx(n) </synopsis> </refsynopsisdiv> @@ -39,7 +39,6 @@ <refsection> <title>Description</title> <para> -This is an Octave function dctmtx(n) returns a Discrete cosine transform matrix of order n-by-n. It is useful for jpeg image compression. D*A is the DCT of the columns of A and D'*A is the inverse DCT of the columns of A (when A is n-by-n). </para> </refsection> @@ -47,12 +46,16 @@ dctmtx(n) returns a Discrete cosine transform matrix of order n-by-n. It is usef <refsection> <title>Examples</title> <programlisting role="example"><![CDATA[ -1. dctmtx(2) -ans = [0.70711 0.70711; 0.70711 -0.70711] -2. dctmtx(3) -ans = [5.7735e-01 5.7735e-01 5.7735e-01; -7.0711e-01 4.9996e-17 -7.0711e-01; -4.0825e-01 -8.1650e-01 4.0825e-01] + n= 3; + T = dctmtx(n) ]]></programlisting> </refsection> + +<refsection> +<title>Modified by :</title> +<simplelist type="vert"> +<member>Sonu Sharma, RGIT Mumbai (fellow at FOSSEE, IIT Bombay)</member> + </simplelist> +</refsection> + </refentry> |