Thank you all for your help,
All of the replies were very helpful to me,
Quote:
Originally Posted by HarryT
Most graphics programs will allow you to change the size of an image. Your requirements seems pretty straightforward: you want to double the linear dimensions of each image.
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Yes you are right, and I found a Photoshop tutorial which is simple way to increase the size, and I get reasonable results so far, h will keep playing with the settings until i get better results.
The method is explained in the following image
Quote:
Originally Posted by RbnJrg
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i tried to use this program but the result wasn't that good, may be i need to do more adjustment.
Quote:
Originally Posted by DaleDe
I would suggest IrfanView. It has a batch mode and can change the DPI and or resize the images as you desire. It has a resample function that can provide the illusion of higher density as well, scaling up or down. It is a great tool and is free. After it resizes everything you could easily take a look and redo any unacceptable images but nearly all or all will be fine.
Dale
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I will try this and see, thank you.
still the main problem is that i have huge number of images to correct, may be..when i start my next book... i have to consider the resolution earlier.