PImage.resize() method?

Programming Questions

dekonstru..

in Programming Questions • 3 years ago

hello everyone,

i was wondering if there was a away to control the inter-/extrapolation method used with the PImage.resize() function. it would appear there isn't, but that would be quite a pity.

thanks, everyone.

Replies(5)

PhiLho

Re: PImage.resize() method?

3 years ago

You have the answer in the PImage.java source code (see blit_resize). If you use smooth(), it uses bilinear filtering. Otherwise, it uses nearest neighbour scaling, fast but primitive.

So, you have a kind of choice...

You can also implement yourself the algorithm of your choice.

dekonstru..

Re: Re: PImage.resize() method?

3 years ago

the source code would imply that blit_resize will be doing bilinear filtering by default, because of the

Copy code

boolean smooth = true;

PhiLho

Yeah, I saw that too, so the choice isn't one, actually, they went (since 2 years, r4720) to the better quality, probably thinking the gain of speed isn't worth the loss of quality, which might trip beginners.

dekonstru..

Re: Re: PImage.resize() method?

3 years ago

i'm really hesitant to screw around with the sources. what i'm working willbe used at a location where i have no control over the setup. are there alternative image processing libs that would give me control over the interpolation methods?

aimlessen..

Re: PImage.resize() method?

2 years ago

I agree with dekonstruktiv. I need to be able to not smooth but don't really want to (or know how) to edit the sources. Any advice?

-aimless

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