Is there an "upsampling" computer application?

Started Feb 3, 2011 | Discussions thread
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Waterengineer
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Is there an "upsampling" computer application?
Feb 3, 2011

Oops. I made a mistake and overwrote a .jpg file resampled at a lower dpi.

Is there an application where an existing file at say, 150 dpi can be resampled at 300pdi?

Or am I hosed. What a silly mistake I made.......

Oh, yes, freeware would be good.

Thanks for the help.

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