Resize an image with 54x54 squares (540x540) to 54x54pixel lossless

Question

I've got an 540x540 image of 54x54 color squares (same sizes).

When I resize it to 54x54px it looks horrible (blurred), shouldn't a resize like this be perfectly done with imagemagick?

is I possible to get it perfect?

I've tested convert source.png -resize destination.png and -adaptive-resize but the result is the same..

Answer 1

I see what your confusion is now... the problem is not that the process is lossy, rather it is because the -resize is doing more sophisticated processing than you want in order to make an attractive job that you would want for, say, photographs. You want a very simple point sampling process which will produce simple blocks of pure, uncombined colour.

I'll make a start image:

magick -size 10x10 xc:red +noise random -scale 540x540 start.png

And scale it down, by taking a point sample in each block:

magick start.png -sample 10x10 small.png

And back up:

magick result.png -scale 540x540 reincarnated.png