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DPI problem

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DPI problem
Wasew Offline
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#1
05-23-2018, 12:13 AM
Hello,

To publicate in an article, I need to enhance a Figure DPI to, at least, 1200 DPI.

I have an image that I got from another article and wanted to use in mine to substantiate the text, but, in the original article, the image is smaller than the size I need to use. When I try to resize it, the quality gets worse and the DPI is way below 1200. 

I saw posts saying that using GIMP I could solve this problem by going to the Image Scale tool and changing the X and Y resolutions. After doing it and changing to 1500, I tried to export the image as pdf (what turned to png in the end), but, looking in the properties, it showed 504x370 instead.

Does anyone know how to solve this problem?

Thanks in advance
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Espermaschine Offline
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#2
05-23-2018, 12:19 AM
What is the pixelsize of the image ?
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Blighty Offline
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#3
05-23-2018, 05:17 AM
You need to know:
1) the size of the image in pixels
2) the size that image will be printed in inches (or mm)
Those two will determine the dpi

If you scale an image (bitmap) it will loose quality. Have a look at this thread:
https://www.gimp-forum.net/Thread-resolu...ity-issues
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