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IPCV - Image Processing and Computer Vision Toolbox for Scilab >> Image Transforms > imidct

imidct

Inverse discrete cosine transform (DCT)

Syntax

y = imdct(x);

Parameters

x :

Input Matrix (1D or 2D)

y :

Output Matrix same dimension with x

Description

Performs an inverse discrete Cosine transform of 1D or 2D array.

Examples

S = imread(fullpath(getIPCVpath() + "/images/measure_gray.jpg"));
y = imdct(S);
y2 = zeros(y);
y2(1:100,1:100) = y(1:100,1:100);
imshow(y2,jetcolormap(256));
S2 = imidct(y2);
imshow(S2);

See also

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