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1) problem 1 (down sample with exact factor) other components:

e.g.

I have an image with 304X212 .png and would like to down sample it by half to 152x106 resolution.

2) problem 2 (down sample with no specific factor) for background image:

e.g.

I have an image with 480X320 .png and would like to change its resolution to 568X192.

I have an image with 1024x384 .png and would like to change its resolution to 480x320.

This website provides the same image with different resolution. How do they do it?

The reason to do this is to provide image asset for both the iPad and iPhone. I am not proficient with any image processing software. Just a typical iOS developer starting to develop using spritekit.

Please help. Thank you very much in advance.

wkho899
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  • Erm... Reason for downvoting please? – wkho899 Dec 26 '13 at 07:40
  • I think those who down voted you are not cleared about your question and the tags which you used, Do you want to achieve this resolution change programatically or you want to do this manually – Retro Dec 26 '13 at 07:50
  • @Retro thanks for your clarification. I want to change the resolution manually. Thinking whether it's easy enough so that I can do it on my own manually or it is too hard to do it that should I partner with a programmer artist to do the art work. Will remove those confusing tags. – wkho899 Dec 26 '13 at 08:09

2 Answers2

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Thats vary simple you can use gimp or Photoshop just google it and just make sure that when you are resigning you do not distort the aspect ratio

Retro
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Blender managed to solve this problem.

wkho899
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