Re: [GD-DEVEL] Gaussian Blur

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NOTE:

I'm not sure if I've posted to this list before, but I"m follwing it
because I"ve begun work on a new pyton wrapper for gd (which does not yet
include either true color or things like Blur, but I hope it will some
day...)

https://github.com/NOAA-ORR-ERD/py_gd

Anyway, my thoughts:

On Thu, Dec 5, 2013 at 2:36 PM, Chris Reuter <[email protected]> wrote:

> I've written a new Gaussian blur routine that is (IMHO) superior to
> the current one in gd_filter.c (i.e. it lets you select radius and
> sigma and splits the operation into two passes for efficiency).
>

nice!

>     1. The blurring effect won't be identical (although I'm pretty
>     sure I can get close enough)
>

I imagine this is OK -- is is "Bluring", after all -- exact results would
be really hard to even detect...


>     2. The image will be converted to true color where it wasn't
>     before.
>

Ouch! That I really don't like -- in fact, the reason I'm wrapping gd at
all is to get palletted image support for my projects -- and I really
wouldn't want anything to convert my images for me.

One could argue that running a gaussian blur on a palletted image is let
than ideal anyway (and you'd be right), but if the existing API supports it
it'd be better not to change that.

Could your code switch on the image type an cal the old routing for
palleted images?

-Chris


-- 

Christopher Barker, Ph.D.
Oceanographer

Emergency Response Division
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