Re: [Gimp-developer] need help with bug #464466 (downscaling quality)
On Fri, 01 Aug 2008 13:51:02 +0200, David Gowers [EMAIL PROTECTED] wrote:
Pixel art ('block graphics'?) is a
pathological case for most scaling algorithyms, and no algorithym old
or new performed very well on upscaling image #8.
David
yes, this is a good test for scaling alorithms. I had not really
apreciated the nature of this image since, although pixel art, it does
have predominantly degraded edges so it is not quite the sort of block
graphic I was refering to. However, picking out some specific areas, it
does give some good information on the merits of different algorithms for
this kind of image.
Viewing the comparitive for 133% at 200% (in Opera) there is a noticable
difference between cubic and lanczos.
http://svenfoo.org/scaletest/133Z8g.png
http://svenfoo.org/scaletest/133C8g.png
opening these two in adjacent tabs in opera and flipping allows direct
comparison. This difference is quite marked.
Comparing directly to the original at 266% with scaled image at 200% there
is an impressive restoration of detail lost to pixelisation in the orginal.
The eyebrow, hair and eye are well enhanced as it the hand on the blue
figure. The staircasing on the knee and thigh of the yellow figure are
also well smoothed out, though not removed completely.
All parts of this image seem to have been noticably enhanced , I think
it's a good demonstration of the lanczos code.
Although downscaling is probably the more critical test (and the case that
was needing most improvement) it may be informative to add another
enlargement to some oddball ratio (say 3.14159) to see how the detail
comes out when the result is several times bigger.
BTW , has this code been ported to the rotation operation? IIRC, that was
a separte file that closely duplicated the scaling code. Maybe this would
be a good point to unify the two.
In any case I'm very pleased to see the lanczos results on this image.
Very impressive.
regards.
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[Gimp-developer] Po-files in SVN have a strange problem
Hello, As I was working on Esperanto translation for gimp, I noticed that it (eo.po).. and the following .po files (in /po/ directory), have a strange problem with a message. pl fr ru ja lt oc One or two messages (the english part) refer to 'Colorsize' where they should refer to 'Colorize' (as in 'save colorize settings' and 'export colorize settings'). I assume this was caused by typos in the source code, later corrected. However, when I ran an update, this message was not removed or replaced by a correct one.. or even left alone while the correct message was added. So, perhaps these files need to be manually changed to correct the message. That's what I did for eo.po (in my local copy) David ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
[Gimp-developer] seeking thoughts on a crash that I caused, and more general question about message passing
Hello all, I am playing around with interfacing some custom hardware that I've built for my PhD to the GIMP. I spent some time yesterday learning how to add popup menus to the UI, so that I could right-click a slider (such as the Cyan / Magenta / Yellow ones in the Color Balance dialog), and bind the slider to data from my input device on-the-fly. I got the popup menu to pop and show the menu entries that I have identified, but after popping the menus a few times, GIMP always crashes with this message: (gimp-2.4:23363): Gtk-CRITICAL **: gtk_window_set_accept_focus: assertion `GTK_IS_WINDOW (window)' failed Bus error Does anyone know how my popup menus caused that, and how I can fix it? The more general question that I have is the following: If I want to route control messages to and from a Python interpreter that I instantiate in the GIMP, what would be the most elegant way to run this interpreter and to route messages? (this is for dynamically controlling the UI - for instance, to make my hardware control the aforementioned sliders, so I don't think I can use the same Python architecture that does plugins). Is there a general message-passing system that I could hook into? Where should I look, to get started? thanks in advance! -David Merrill -- MIT Media Lab [EMAIL PROTECTED] http://web.media.mit.edu/~dmerrill/ http://web.media.mit.edu/%7Edmerrill/ ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
[Gimp-developer] Windows - Image display actions potential improvement
Hello, I just noticed a usability issue with the 'Windows' actions related to image displays in SVN... They seem to be attached to specific displays, rather than to the Nth display out of the current displays. Currently, we can switch quickly between some active images by using dynamic keyboard shortcuts and assigning keys (I like '234567' -- a number key for each of 6 open images) to them as we open them. We can also quickly switch between alternate views of an image (eg 100% with selection, layer borders, guides and rulers visible; or 'final rendering size' (50%) without anything but the image visible. This is quite powerful (try it out!). However.. any keyboard shortcuts assigned only last until you close that image -- because each display number only gets generated once each GIMP session (they are generated sequentially starting from 1). This is why the usage pattern above requires you to use Dynamic Keyboard Shortcuts and assign shortcuts as images are loaded. My proposal is to have these actions index the available image displays sorted by their display ID -- this amounts to, if you have keys 123456789 assigned as shortcuts for the 1st .. 9th display, and 9 displays open, pressing 1 will raise the oldest display, pressing 9 will raise the newest. If you close some, 8 or 7 could end up being the shortcut for the newest display I believe that both the current code and the proposed amendment are somewhat surprising : the former because shortcut assignments get 'lost', the latter because shortcuts become assigned to different images when an image is removed from the middle. I am sure that my proposed amendment is both less surprising, and a usability enhancement that anyone who works with more than a few images at once will appreciate. I plan to make a patch to try this within a week. As for why I sent this here, I'm interested to know: Is there a reason for the current behaviour? Are there better approaches? (i'm thinking here of GIMP-GAP .. when you're using it, display IDs get very high quickly, because each time you switch frames, the display number is incremented. Thus, my proposal could be a little more surprising to GAP users, because changing the frame you're editing will bump an animation so it becomes the 'newest' image.) David ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
Re: [Gimp-developer] seeking thoughts on a crash that I caused, and more general question about message passing
Hi, On Mon, 2008-08-04 at 10:12 -0400, David Merrill wrote: The more general question that I have is the following: If I want to route control messages to and from a Python interpreter that I instantiate in the GIMP, what would be the most elegant way to run this interpreter and to route messages? (this is for dynamically controlling the UI - for instance, to make my hardware control the aforementioned sliders, so I don't think I can use the same Python architecture that does plugins). Is there a general message-passing system that I could hook into? Where should I look, to get started? Since you want to control the GUI, you probably want to look at the accessibility framework of GTK+. There are Python bindings for this, for example dogtail (http://people.redhat.com/zcerza/dogtail/). Since this is not at all GIMP related, but purely a GTK+ question, perhaps you want to ask further questions about this on the a11y mailing lists. Sven ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
Re: [Gimp-developer] Po-files in SVN have a strange problem
Hi, On Mon, 2008-08-04 at 23:25 +0930, David Gowers wrote: One or two messages (the english part) refer to 'Colorsize' where they should refer to 'Colorize' (as in 'save colorize settings' and 'export colorize settings'). I assume this was caused by typos in the source code, later corrected. That is correct. However, when I ran an update, this message was not removed or replaced by a correct one.. or even left alone while the correct message was added. How exactly do you update the po files? Sven ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
Re: [Gimp-developer] need help with bug #464466 (downscaling quality)
Hi, On Fri, 2008-08-01 at 17:22 -0400, Liam R E Quin wrote: So far it feels noticeably slower on mediumsized or large images (e.g. a 13899x8497-pixel 2400dpi grayscale scan, which Gimp reports as 230MBytes) but the results are outstandingly better. Since the test results are looking good, I think we should commit the changes then so that they get more testing. Does anyone disagree with this? Otherwise I will commit the changes later this week. Sven ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
Re: [Gimp-developer] Po-files in SVN have a strange problem
Hi, On Tue, Aug 5, 2008 at 5:06 AM, Sven Neumann [EMAIL PROTECTED] wrote: Hi, On Mon, 2008-08-04 at 23:25 +0930, David Gowers wrote: One or two messages (the english part) refer to 'Colorsize' where they should refer to 'Colorize' (as in 'save colorize settings' and 'export colorize settings'). I assume this was caused by typos in the source code, later corrected. That is correct. However, when I ran an update, this message was not removed or replaced by a correct one.. or even left alone while the correct message was added. How exactly do you update the po files? ../intltool-update eo However, when I run an update on any of the other .po's, it works fine (no 'Colorsize' message any more, 'Colorize'). Strange. ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
