Re: [Gimp-developer] Layer modes: Add vivid light blend mode?

2017-01-23 Thread Ell via gimp-developer-list
On 01/23/2017 06:58 AM, Laxminarayan Kamath wrote: Hi all! While you guys are at it, I encourage you to try out this formula: E = (2 * I ) - M Note that the recent work in master removed the channel-value clamping that used to happen during blending (yay! :), and since each layer appears on

Re: [Gimp-developer] Layer modes: Add vivid light blend mode?

2017-01-23 Thread Laxminarayan Kamath
On 1/23/17, Øyvind Kolås wrote: > This is similar to something else I have experimented with, permitting > opacity values below 0% and above 100% for normal mode, this permits > implementing unsharp mask with a blur layer - as well as increasing > saturation by blending a color image with it's de

Re: [Gimp-developer] Layer modes: Add vivid light blend mode?

2017-01-23 Thread Laxminarayan Kamath
On second reading, the previous description is not that clear on how to use it. (unless you have read the unsharp mask script) You have an image with a slight radial or zoom blur or motion blur (the photographer tried to be creative) . You duplicate the layer. You measure and run the same exact bl

Re: [Gimp-developer] Layer modes: Add vivid light blend mode?

2017-01-23 Thread Øyvind Kolås
On Mon, Jan 23, 2017 at 12:58 PM, Laxminarayan Kamath wrote: > Hi all! > > While you guys are at it, I encourage you to try out this formula: > > E = (2 * I ) - M > > I call it the "Opposite" mode. I derived it from how the unsharp mask > does the sharpening - first run a grain extract and then do

Re: [Gimp-developer] Layer modes: Add vivid light blend mode?

2017-01-23 Thread Laxminarayan Kamath
Hi all! While you guys are at it, I encourage you to try out this formula: E = (2 * I ) - M I call it the "Opposite" mode. I derived it from how the unsharp mask does the sharpening - first run a grain extract and then do a grain merge. It is not useful in an awful lot of places. But when you w

Re: [Gimp-developer] Layer modes: Add vivid light blend mode?

2017-01-22 Thread Alexandre Prokoudine
On Sun, Jan 22, 2017 at 3:29 PM, Alexandre Prokoudine wrote: > On Tue, Jan 17, 2017 at 6:46 PM, Jan Buchmann wrote: > >> I saw in GIT that you are working on the layer modes (linear vs gamma >> etc) currently. For some key adjustments that I do, I use the vivid >> light layer mode, which is only av

Re: [Gimp-developer] Layer modes: Add vivid light blend mode?

2017-01-22 Thread Alexandre Prokoudine
On Tue, Jan 17, 2017 at 6:46 PM, Jan Buchmann wrote: > I saw in GIT that you are working on the layer modes (linear vs gamma > etc) currently. For some key adjustments that I do, I use the vivid > light layer mode, which is only available via calling GMIC at the > moment. Would it be hard to imple

[Gimp-developer] Layer modes: Add vivid light blend mode?

2017-01-22 Thread Jan Buchmann via gimp-developer-list
SORRY: Subject was missing in first mail Dear all, thanks for all the work being put in developing GIMP 2.10. The development will be a huge step for GIMP especially 16bit and color management. I'm using mostly the latest git version compiled via MacPorts on macOS. I saw in GIT that you are work