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2D All the way! / Image noise reduction

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GeneralFOL
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Posted: 21st Oct 2012 18:26
Hi all, does anyone know how to use Drakbasic to remove noise from an image?.

Any help appreciated.

MrValentine
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Posted: 21st Oct 2012 22:52
DBC or DBP?

GeneralFOL
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MrValentine
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Posted: 22nd Oct 2012 02:31
Keep this in your other more relavent thread

HI

GeneralFOL
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Posted: 22nd Oct 2012 13:35
Im sure if its not relevant the mods will remove this thread.

Im sure posting in the DBPro forums regarding normal mapping and in the 2D forums regarding noise reduction are both relevant but linked to the same issue, just a different scope on it.

MrValentine
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Posted: 22nd Oct 2012 14:52
Sorry my bad, 'twas late and I was meaning to write, remember to link the other haha...

GeneralFOL
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Green Gandalf
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Posted: 25th Oct 2012 03:01
Quote: "does anyone know how to use Drakbasic to remove noise from an image"


Do you have a typical noisy image we can experiment on? I've got a few ideas I'd like to test.

I'm sure it's possible in DBPro - you just need to get the right algorithm/method.
GeneralFOL
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Posted: 25th Oct 2012 16:46
Hi Green Gandalf,

To cut a long story short, im trying ot make an app that will generate a normal map from any given image.

So far i can load and image, process it as a normal map and then slightly blur the image to get rid of som of the roughness.

I think what needs to happen is load the image, remove noise, then generate the normal map.

When i compare my generated normal maps to that of Cray bump for example, there is a big difference in the amount of finer detail.

So i guess my question really applys to any image.

Any help is greatly appreciated.

Green Gandalf
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Posted: 25th Oct 2012 19:35
Do you mean that there is too much detail in your normal maps - or too little?
GeneralFOL
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Posted: 26th Oct 2012 14:26
Thanks - I thought I'd better confirm that.

Have you looked at the normal mapping thread by david w ?

Normal and Heightmaps

I posted some normal map creating code there but it probably needs further tweaking for your smoothness issue which, if I recall correctly, my code also suffers from to some extent. I never bothered to remedy that issue because I now use the normal map export function in Texture Maker which works well.

If you really need it I could have a fresh look at the code (and perhaps include some GUI stuff as well ).

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