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Idea for image enlargement technology.

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Mar 3rd 2004#144132 Report
Member since: Sep 16th 2002
Posts: 1876
Often I've seen people try to enlarge images in photoshop, only to come up with blurry results.

Well... I was thinking about this yesterday and remembered the tradition (pen and paper) way to do it. I'm sure most of you are familiar with the method. You take your picture and draw a grid on it, then you draw a grid of the same number of larger squares on a blank piece of paper and continue to copy the image over square by square.

Well... why can't software be made to do that? A program will grid an image using 1px by 1px squares, then save the color locations, line locations, and everything in the square, save it's position... then it'll just recreate that square in a larger size...

Is this possible? Is there already good enough enlarging software that I don't know about?
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Mar 3rd 2004#144139 Report
Member since: Apr 20th 2002
Posts: 3000
That's called MS Paint. Problem is, you can't resize a 20x30 image to a 46x69 image using a pixel-by-pixel correlation, can ya? Graphic programs have to compensate for lost pixel data, same goes for pixel data that doesn't exist OR can't exist since they might end up in between pixel coordinates.

The reason why it works so well on paper is that each box isn't a pixel; it contains a variety of colors, lines, etc. that you just merely enlarge to fit into a bigger box. Pixels and their sizes are static.
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Mar 3rd 2004#144204 Report
Member since: Mar 29th 2003
Posts: 1326
Yeah, if you have a pixel thats black and one thats red right next to it, and blow it up, youll get two huge 'pixels'. Or two blurred things, which is the computers way of trying to make it look a little better.
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Mar 3rd 2004#144205 Report
Member since: Jun 20th 2003
Posts: 1203
The reason they are blurry is because it needs to make up image data. What you are saying is essentially what it is doing. It will look detailed from farther away just like your idea.
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Mar 3rd 2004#144210 Report
Member since: May 13th 2003
Posts: 644
In theory it sounds like a sound idea, but i think the problem is that you are not adding image date if you do it 1px to 1px. You need something that will copy 1px and split it to like 2or more, that would be an acurate way to "blow" something up.
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Mar 4th 2004#144235 Report
Member since: Jun 3rd 2003
Posts: 1867
Well, If you were do to it manually as suggested in the first post, then you'd have a perfectly crisp image with no made up image data... but things like anti aliasing would certainly not look at good.

basically it would look as if you zoomed in 200%. But like tele said, that way will still look the same from afar.
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Mar 4th 2004#144242 Report
Member since: Sep 16th 2002
Posts: 1876
Ok, I think I meant the pixel part as in size only. Not a single pixel, but all the information inside 5px by 5px area.

But yeah, everything you guys said is correct. :(
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