Hi,
The "Color" layer mode has since long produced bad results, see bug
325564 [1] for a way to see this. The cause is a combination of rounding
errors due to 8bit processing and poor properties/usage of the
underlying color model HSL.
I have just implemented Color based on the CIE LCH color m
Martin Nordholts wrote:
> Does anyone see any problems with using CIE LCH instead of HSV for these
> layer modes? We can ignore backwards compatibility issues for now.
I very rarely use layer modes (and I'm not a GIMP hacker so I'm probably
missing something), but if using internally CIE LCH fo
On 08/02/2009 12:19 PM, SHIRAKAWA Akira wrote:
> Martin Nordholts wrote:
>
>> Does anyone see any problems with using CIE LCH instead of HSV for
>> these layer modes? We can ignore backwards compatibility issues for now.
>
> Except for the final results, will there be any change at a user
> interac
On Sun, Aug 2, 2009 at 7:49 PM, SHIRAKAWA Akira
wrote:
> Martin Nordholts wrote:
>
> > Does anyone see any problems with using CIE LCH instead of HSV for these
> > layer modes? We can ignore backwards compatibility issues for now.
>
> I very rarely use layer modes (and I'm not a GIMP hacker so I'm
On 08/02/2009 12:59 PM, David Gowers wrote:
> LCH processing is definitely slower than HSV or HSL (whether optimized
> or not), so this may have an impact on display update speed (and
> consequently on user experience)
Problems with real-time responsiveness when using LCH is a good point,
and usi
Hi Martin,
On Sat, Aug 01, 2009 at 09:32:36AM +0200, Martin Nordholts wrote:
> On 07/31/2009 07:12 AM, Roman Joost wrote:
> > I could and the patch provided by that bug adds a custom
> > 'property-changed' signal. Sven and Mitch thought, if I inherit from
> > XMPModel, I wouldn't really need the '
On 08/02/2009 01:50 PM, Roman Joost wrote:
>> does not change the fact that it would be nice to have a
>> 'property-changed' signal as a convenience if you have the need to
>> listen property changes
> So ... I'm just wondering. If I like to use two signals for the
> XMPModel, does it still make se
Nice work Martin :-)
I'm trying to make a valid comparison of the two images from PS and
Gimp but it seems like the have block distortions from jpeg
compression or something?
I mostly use the color layer mode for overlay painting on black and
white sketches. Here is an example of the use:
http://
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The input I've gotten so far removed any remaining doubt about porting
those layer modes to LCH, so I've done that now:
commit 18603ac192493296b191197a3e2b62c710398afd
Author: Martin Nordholts
Date: Sun Aug 2 21:35:10 2009 +0200
Bug 401754 – Port Hue, Saturation, Value to CIE LCH
When
Hi guys,
my name is Rashid, I'm 23, studing computer science in germany and I
need your help.
I need to save / read a comment in a jpeg file for a project. It must
be a jfif comment (not exif). My OS is Ubuntu 9.04 and I have used
libexiv2 (but they told me now, I have to use a jfif comment
On Mon, Aug 3, 2009 at 5:13 AM, Martin Nordholts wrote:
> The input I've gotten so far removed any remaining doubt about porting
> those layer modes to LCH, so I've done that now:
>
> commit 18603ac192493296b191197a3e2b62c710398afd
> Author: Martin Nordholts
> Date: Sun Aug 2 21:35:10 2009 +02
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