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Are there ways to scale images to VERY large sizes (> 45,000 x 25312) on a so-so computer (i3 mac mini 2018, 20gb ram)?


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I'm trying to creating an infinitely zooming picture that zooms in on the mean mugging baby's eye. I plan to write some code that zoom's in on the baby's eye, and once the zoom get's to a certain point, I will place the original picture overtop of the picture in the eye. To do this I have to make sure the original picture, and the picture in the eye have the same background, so I'm creating a rectangle with the right proportions around the baby, and then trying to scale it down until I can select it and copy the content that would be around the baby inside the eye, but when I scale down that low, the proportions can't scale down accurately enough because they must scale at even numbers for pixels (no decimals), when I scale back up, the rectangle doesn't fit properly. The video attached shows what I'm trying to do.

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When I try to increase the size of the image past 45000 pixels, my computer freezes up. Is there anything I can adjust to fix this?

These are the details of my computer

Affinity Photo v. 1.9.3
Mac Mini 2018
Mac OS Big Sur v. 11.4
Processor: 3.6 GHz Quad-Core Intel Core i3
Memory: 20 GB 2667 MHz DDR4

 

 

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Possible.  But Pixelmator is a Mac-program. And I don't have a Mac...

BTW. I only use APub. For my photo work I use for a long time Lightroom as main program and Luminar, Aurora HDR and Topaz ShapenAI when needed. But we go off-topic.

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