Re: [Gimp-user] Masking for Contrast Control - Can this be done in Gimp?
Thanks Saul. (Leaving text below in case this s/b the basis for a bugreport ...) a) I can drag and drop in the Layers dialog - but never see the '+'-sign in the cursor. b) In your video (I stepped through it frame by frame so I'm pretty sure I have this correct) as soon as you grabbed the layer and moved it up to the channels icon to open the channels dialog the '+' sign appeared and (I think(?)] was visible until you dropped it below the line - below the components section - into the channels section. When I do it (again Windows XP, same in both GIMP 2.6.6 and GIMP 2.7 r28070) the '+' sign never appears while dragging in the image dialog and only appears when dragging in the channels dialog if I position my cursor to the right of where a fairly short channel name would appear - or if none yet, to the right of where it would be. (If description is 10 characters (say) background copy the + sign appears when cursor is over the 'c' in copy or further right - otherwise it is not shown). When '+' displayed drop will be successful otherwise it fails. . When I was first trying to follow your description I didn't have my cursor far enough right and first time I managed to do it had confused myself into thinking it was a matter of how close cursor was to the separator line :-( For improved discoverablity suggest that the '+' sign s/b added to drag-drop anywhere its legal to drop and in particular only be removed in the Channels dialog when cursor is over the components section but reappear when cursor is *anywhere* below the line. I *think* but not sure about this, that '+' sign should appear when cursor is over the Channels icon allowing drop there - which should automatically drop it in the same place that a new channel would be created if user keyed Shift+[New] button. can anyone confirm/refute above using Linux/Mac/Windows build? btw: Once I got the above straight your recipe worked great on the sample image. saulgo...@flashingtwelve.brickfilms.com wrote: Quoting Alec Burgess bura...@gmail.com: Saul: You said 1. Drag your original layer over to the Channels Dialog and drop it, creating a new channel. In your video, when you drag the image from the layer dock up to the channels dock your cursor has a '+' sign inside the _ |+ ... when I do it I have no plus sign and when the channels dock opens and I drop the dragged item just disappears without raising a new channel. Just to be clear, after the Channels Dialog is raised (this feature thanks to Michael Natterer :) ), you must move the pointer down to the channels section of the dialog (as opposed to the components part at the top with the red, green, and blue components). The + symbol should appear when the pointer is hovered in the droppable region -- if you had some channels already there then the + would only appear when you are between channels (there would also be a horizontal line similar to what appears when dropping layers in the Layers Dialog). I'm using 2.6.6 on Windows XP. I tried modifier keys Shift and Ctrl and Shift+Ctrl just in case but can't get the '+' sign to appear in the cursor and more importantly can't get the auto-creation of a new channel. I do not use Windows so I doubt I can be of much help. You should check to see if you can drag-n-drop layers in the Layers Dialog to reorder your layerstack (instead of a + symbol, you will see an arrow because you are not copying the layer, but moving it). You should also see if, in the Channels Dialog, you can drag one of the components (red, green, or blue) down from the top and drop it in the channels list. If you have problems doing either of these then it is possibly owing to a bug in the Windows version of GIMP. ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Masking for Contrast Control - Can this be done in Gimp?
Quoting Alec Burgess bura...@gmail.com: For improved discoverablity suggest that the '+' sign s/b added to drag-drop anywhere its legal to drop and in particular only be removed in the Channels dialog when cursor is over the components section but reappear when cursor is *anywhere* below the line. ... What you describe is how GIMP _should_ work, and how it _does_ work on my machines (GNU/Linux, GIMP 2.6.7). I have also tested on a friend's Windows machine running GIMP 2.4.6 and the behavior is as you describe. ... I *think* but not sure about this, that '+' sign should appear when cursor is over the Channels icon allowing drop there - which should automatically drop it in the same place that a new channel would be created if user keyed Shift+[New] button. This is not how GIMP currently behaves, but might be a reasonable enhancement request. Personally, I don't think it would be that beneficial (no offense) and should require examination of other drag-n-drop functionality from a UI perspective (e.g., if a color is dropped on the Text Tool Options tab, does the text color change). In any event, this should not currently be considered a bug. I believe that you should post the anomalous behavior you are experiencing to the developer's mailing list, or submit a bug report. You should be able to drop a channel _anywhere_ within the channel list frame of the Channels Dialog and your inability to do so would seem a regression. If you could install an older version of GIMP to verify my findings with 2.4.6 on Windows, that should prove helpful. (If you go much older than 2.4.6 then you will need to have the Layers Dialog and the Channels Dialog in different docks; because the auto-raise tab functionality had not yet been implemented.) ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Masking for Contrast Control - Can this be done in Gimp?
How about something like : duplicate layer desaturate invert slight blur adjust opacity merge HTH - The information in this e-mail and any attachments is confidential and is intended for the attention and use of the named addressee(s). It must not be disclosed to any other person without our authority. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient or are aware that this e-mail has been sent to you in error, you are not authorised to and must not disclose, copy, distribute, or retain this message or any part of it. We sweep all outgoing messages for the presence of computer viruses. However, we cannot accept any responsibility for any loss or damage to your systems due to viruses or malicious code not detected. The statements and opinions expressed in this message are those of the author and do not necessarily reflect those of the organisations within the Cornwall Isles of Scilly Health Community. This email may be disclosed under the Freedom of Information Act 2000 or the Environmental Information Regulations 2004. - ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Masking for Contrast Control - Can this be done in Gimp?
On Wed, Apr 1, 2009 at 6:32 PM, paperaussie paperaus...@gmx.net wrote: Can any experienced Gimp users tell me how the process described in Ron Bigelow's article can be reproduced in Gimp most efficiently? http://www.ronbigelow.com/articles/contrast/contrast.htm http://www.ronbigelow.com/articles/contrast/contrast.htm Looks like a quite handy process to optimise some photos. I think I sort of could reproduce it with layers but I couldn't figure out if it is possible to follow these instructions with channels. The procedure in GIMP is virtually identical. I'll paste the most relevant part here, adjusted for GIMP: --- A selection of the entire image is created by choosing Select/All. The image is now copied by choosing Edit/Copy. A new channel is created by clicking on the Create new channel icon at the bottom of the Channels dockable (see Figure 5). The channel should be renamed the Contrast channel. The image is now pasted into the Contrast channel by selecting that channel and choosing Edit/Paste, going to the Layers dockable and clicking the Anchor icon. Next, it is necessary to invert the black and white image by choosing Colors/Invert. --- ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Masking for Contrast Control - Can this be done in Gimp?
Francesco Scaglioni f...@mossdog.net wrote: How about something like : duplicate layer desaturate invert slight blur adjust opacity merge Placing the top layer in divide mode is also very useful. Also try Overlay or Soft light. All this is much simpler than the method suggested by the original site, which seems an overkill. -- Olivier Lecarme ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Masking for Contrast Control - Can this be done in Gimp?
Quoting paperaussie paperaus...@gmx.net: Can any experienced Gimp users tell me how the process described in Ron Bigelow's article can be reproduced in Gimp most efficiently? http://www.ronbigelow.com/articles/contrast/contrast.htm The following link is to a short screen capture of how that might be done in GIMP I use a similar technique quite often when adjusting highlights and shadows. There is no sound but the video should be easy to follow (I apologize for the jumpy pointer; my optical mouse died and I had to use a trackball). http://flashingtwelve.brickfilms.com/GIMP/Temp/masking.ogv (OGG Theora 2.7Mb) 1. Drag your original layer over to the Channels Dialog and drop it, creating a new channel. 2. Hide the channel by clicking on its eyeball icon. 3. Return to the Layers Dialog. 4. Duplicate your original layer and increase its gamma using the Levels filter. 5. Add a layermask to the duplicate layer, initializing it to the inverted channel produced by Step 1. 6. Add a bit of Gaussian blur to the layermask (optional). 7. Adjust the opacity of the duplicate layer to obtain desired result. Step 4 is not necessary if you already have an overexposed version of the original layer (created from a HDR RAW file), as was the case in the tutorial you linked to. ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Masking for Contrast Control - Can this be done in Gimp?
On Wed, Apr 1, 2009 at 10:53 PM, Olivier Lecarme o...@olecarme.homelinux.net Placing the top layer in divide mode is also very useful. Also try Overlay or Soft light. All this is much simpler than the method suggested by the original site, which seems an overkill. Agreed. If I was doing this, I would not use channels at all, and I'd hardly use layers. I would: 1. Edit-Copy the image 2. Enter QMask mode 3. Edit-Paste, and Anchor 4. Colors-Invert 5. Leave QMask mode 6. Edit-Copy 7. Edit-Paste 8. Convert the floating layer to a normal layer 9. Adjust the new layer 10. Merge or flatten when done. ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Masking for Contrast Control - Can this be done in Gimp?
Saul: You said 1. Drag your original layer over to the Channels Dialog and drop it, creating a new channel. In your video, when you drag the image from the layer dock up to the channels dock your cursor has a '+' sign inside the _ |+ ... when I do it I have no plus sign and when the channels dock opens and I drop the dragged item just disappears without raising a new channel. I'm using 2.6.6 on Windows XP. I tried modifier keys Shift and Ctrl and Shift+Ctrl just in case but can't get the '+' sign to appear in the cursor and more importantly can't get the auto-creation of a new channel. Is this a bug or is there something I'm missing? saulgo...@flashingtwelve.brickfilms.com wrote: Quoting paperaussie paperaus...@gmx.net: Can any experienced Gimp users tell me how the process described in Ron Bigelow's article can be reproduced in Gimp most efficiently? http://www.ronbigelow.com/articles/contrast/contrast.htm The following link is to a short screen capture of how that might be done in GIMP I use a similar technique quite often when adjusting highlights and shadows. There is no sound but the video should be easy to follow (I apologize for the jumpy pointer; my optical mouse died and I had to use a trackball). http://flashingtwelve.brickfilms.com/GIMP/Temp/masking.ogv (OGG Theora 2.7Mb) 1. Drag your original layer over to the Channels Dialog and drop it, creating a new channel. 2. Hide the channel by clicking on its eyeball icon. 3. Return to the Layers Dialog. 4. Duplicate your original layer and increase its gamma using the Levels filter. 5. Add a layermask to the duplicate layer, initializing it to the inverted channel produced by Step 1. 6. Add a bit of Gaussian blur to the layermask (optional). 7. Adjust the opacity of the duplicate layer to obtain desired result. Step 4 is not necessary if you already have an overexposed version of the original layer (created from a HDR RAW file), as was the case in the tutorial you linked to. ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user -- Regards ... Alec (bura...@gmail WinLiveMess - alec.m.burg...@skype) ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
