JPEG compression dataloss happens.
A little long to put on a bumper sticker, but that’s okay. We all know it happens. After all, we’ve all seen the “quality” slider when exporting to JPEG … or JPG … it’s all the same, really. The lower the quality, the lower the file size.
So what happens to that data? That data that is lost to jam into a smaller file size?
Here’s what happens…kinda…
Terrible JPEG Compression Transforms ‘The Tragedy of Romeo and Juliet’ Into ‘Tej Uqahdfs”me$nolcr Dlc!ulfgr’
Tom Scott saved Shakespeare’s Romeo and Juliet at various qualities to research the poor quality of JPEG compression. Each version was then printed and bound — genius!
“We’re sensitive to data loss in text form: we can only consume a few dozens of bytes per second, and so any error is obvious. Conversely, we’re almost blind to it in pictures and images: and so losing quality doesn’t bother us all that much. Should it?”
As you can see by the images above, the text becomes completely unreadable, while the images printed on each book is not very noticeable to the naked eye.
Very cool. Very interesting.
Should this kind of image dataloss bother us?
[via Tom Scott]
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