

The original image.

Result of reducing the resolution of (i.e. subsampling)
tst2 by a factor of 2.

Result of reducing the resolution of (i.e. subsampling)
tst2 by a factor of 4.

Result of reducing the resolution of (i.e. subsampling)
tst2 by a factor of 8.

Result of reducing the resolution of (i.e. subsampling)
tst2 by a factor of 16.