Direct Cosine Transform operation.
function call:
[out_img1]=vsg('DCT',in_img1);
Arguments:
in_img1
input image, 3 channel
Description:
out_img1
– the output image values are the discrete cosine transform of the input
image.
Example:
img = openimage('lake.jpg');
h=figure;image(img);set(h,'Name','Input
Image');
[out_img1]=vsg('DCT',img);
[out_img2]=vsg('ViewDCT',out_img1);
h=figure; image(uint8(out_img2));set(h,'Name','DCT
image');
Notes:
1. For DICOM images,
the function operates on all slices separately.
2. For