Calculating the Reslution of image
If you know the dimensions in pixels and in the unit of length, eg. In millimeters,
is easy to calculate the resolution. The number of pixels must be divided by the length and the quotient must be multiplied by 25.4. Here is an example:
Data:
-image size 1600 by 1200 pixels
-the width of the printed image 135.4
Searched:
-image resolution
Solution:
1600 : 135,4 * 25,4 = 300 ppi
Instead of performing these calculations, you can use the graphics programs, which make rapid conversion of units,
eg. the program above, which is one of the functions of GIMP.
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