[DUG] Icon

John Bird johnkbird at paradise.net.nz
Wed Jul 21 10:19:09 NZST 2010


The only problem I have struck with Irfanview (and other programs) is in 
resizing images:

If I have an image I want to use, I will usually resize it to several 
different sizes, some small enough to be used as images on a TBitButton.

If for example the image is Blue, and has a transparent (eg white) 
background and is resized smaller, there are a few pixels on and around the 
edge of the blue image on the background that get to be averaged to a light 
blue - in between white and blue.   This is not a problem until the image is 
shown on a darker background, and the light blue pixels show as a small 
ragged bright edge to the image because they are not the transparent colour 
any more.

I have experimented with the IrfanView  option "Sharpen after resize" but 
this does not quite solve the problem - it seems to sharpen the edge of 
bright pixels, and sometimes introduces other oddities.

Anyone else have a way to deal with this?   I have often blown up the 
resized image using Photofiltre (ie view at 800%) and carefully brush the 
offending edge pixels back to the transparent colour.   Very fiddly!


John

--------------------------------------------------
From: "Conor Boyd" <Conor.Boyd at trimble.co.nz>
Sent: Wednesday, July 21, 2010 9:10 AM
To: "NZ Borland Developers Group - Delphi List" <delphi at delphi.org.nz>
Subject: Re: [DUG] Icon

> Yeah, Irfanview would be my tool of choice for this sort of task (and
> many others).
>
> www.irfanview.com
>
> Cheers,
>
> C.
>
> -----Original Message-----
> From: delphi-bounces at delphi.org.nz [mailto:delphi-bounces at delphi.org.nz]
> On Behalf Of John Bird
>
> I think it disappeared in later Delphi,
>
> I use any of IrfanView, PhotoFiltre, Paint.Net   - all freeware -
> Irfanview
> is a converter and viewer, the other two are excellent image editors and
> convert too.
>
> What do others use?
>
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