Gmic offers the filter Layers > colours to layers Which allows tuneable separation of colours
Minimal Area (%) may have to be kept very low (0.01 to 0.02) to receive a result. On Fri, 13 Mar 2020, 12:00 , <gimp-user-list-requ...@gnome.org> wrote: > Send gimp-user-list mailing list submissions to > gimp-user-list@gnome.org > > To subscribe or unsubscribe via the World Wide Web, visit > https://mail.gnome.org/mailman/listinfo/gimp-user-list > or, via email, send a message with subject or body 'help' to > gimp-user-list-requ...@gnome.org > > You can reach the person managing the list at > gimp-user-list-ow...@gnome.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of gimp-user-list digest..." > > > Today's Topics: > > 1. Open PDF at the right width and height (YouNoOat) > 2. Open PDF at the right width and height (rich404) > 3. Sizes of an image - display v printing (chuckie) > 4. Open PDF at the right width and height (YouNoOat) > 5. Re: Sizes of an image - display v printing (Ofnuts) > 6. Decompose greyscale to layers (Quin Benson) > 7. Gimp 2.10 and Streetwear font (glyphs) (vincents) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Thu, 12 Mar 2020 18:43:51 +0100 > From: YouNoOat <for...@gimpusers.com> > To: gimp-user-list@gnome.org > Subject: [Gimp-user] Open PDF at the right width and height > Message-ID: <93...@forums.gimpusers.com> > Content-Type: text/plain; charset=UTF-8 > > Hello, > > I'm trying to convert PDF to image with batch processing. > But I didn't find a way to choose pixel-width and pixel-height during the > opening of the PDF, as in interactive mode (window "import PDF"). > > Instead of that, Gimp automatically opens the PDF at 100% size AND 100 dpi. > > For example : > My PDF is 7,84 x 11,69 inch, not rasterized and fully losless resizable. > As Gimp assumes that the PDF is at 100 dpi, the resulting image (opened > with > "gimp_file_load") is 784 x 1169 pixels. > > It's too low, because the PDF contains mainly small texts, not readable at > 784 x > 1169. > > And the idea to use "gimp_image_scale" to increase the image size is not > relevant. > It makes heavier images but not more readable. > Once the image is rasterized, even with a good interpolation, you can't no > more > increase the readability. > > The plugin "file-pdf-load" neither have width/height or dpi parameters, so > it > converts the PDF at the same small resolution (768 x 1169). > > Could you help me to create large images from PDF by batch processing ? > > Thank you - APL > > -- > YouNoOat (via www.gimpusers.com/forums) > > > ------------------------------ > > Message: 2 > Date: Thu, 12 Mar 2020 19:26:58 +0100 > From: rich404 <for...@gimpusers.com> > To: gimp-user-list@gnome.org > Subject: [Gimp-user] Open PDF at the right width and height > Message-ID: <93...@forums.gimpusers.com> > Content-Type: text/plain; charset=UTF-8 > > >Hello, > > > >I'm trying to convert PDF to image with batch processing. > >But I didn't find a way to choose pixel-width and pixel-height during > >the > >opening of the PDF, as in interactive mode (window "import PDF"). > > > >Instead of that, Gimp automatically opens the PDF at 100% size AND 100 > >dpi. > > > >For example : > >My PDF is 7,84 x 11,69 inch, not rasterized and fully losless > >resizable. > >As Gimp assumes that the PDF is at 100 dpi, the resulting image > >(opened with > >"gimp_file_load") is 784 x 1169 pixels. > > > >It's too low, because the PDF contains mainly small texts, not > >readable at 784 x > >1169. > > > >And the idea to use "gimp_image_scale" to increase the image size is > >not > >relevant. > >It makes heavier images but not more readable. > >Once the image is rasterized, even with a good interpolation, you > >can't no more > >increase the readability. > > > >The plugin "file-pdf-load" neither have width/height or dpi > >parameters, so it > >converts the PDF at the same small resolution (768 x 1169). > > > >Could you help me to create large images from PDF by batch processing > >? > > > >Thank you - APL > > Did you ask this question on one of the Gimp forums recently, seems > familiar. > > However. > > Do not use Gimp, use ImageMagick. > > magick -density 300 infile.pdf -quality 100 outfile.png > > and wrap that in a bash or batch file depending on OS. > > -- > rich404 (via www.gimpusers.com/forums) > > > ------------------------------ > > Message: 3 > Date: Thu, 12 Mar 2020 19:44:33 +0100 > From: chuckie <for...@gimpusers.com> > To: gimp-user-list@gnome.org > Subject: [Gimp-user] Sizes of an image - display v printing > Message-ID: <93...@forums.gimpusers.com> > Content-Type: text/plain; charset=UTF-8 > > I am little confused ... > > I have an image that is 828 pixels wide. > > If I open it in Paint, and HyperSnap or GIMP and view it at 100% and use a > ruler, the width of the image is about 23cm. > > If I drag the image into a Microsoft Outlook email (embed it) or go to the > GIMP > Print Size window, they both report it to be 3.5cm wide! > > So, the GIMP editor shows it at a nice size of 23cm visually, but to > print, or > embed it in Microsoft Outlook email it is only 3.5cm width. > > Why is it then that the display of it in the editor is 23cm? What changes > need > to be applied so that the image will embed into Microsoft Outlook email at > 23cm? > Certainly, I was expectign it to embed at the scale I see it in the GIMP > viewer > and not the anticipate scale for printing. > > > -- > chuckie (via www.gimpusers.com/forums) > > > ------------------------------ > > Message: 4 > Date: Fri, 13 Mar 2020 00:47:39 +0100 > From: YouNoOat <for...@gimpusers.com> > To: gimp-user-list@gnome.org > Subject: [Gimp-user] Open PDF at the right width and height > Message-ID: <93...@forums.gimpusers.com> > Content-Type: text/plain; charset=UTF-8 > > >Did you ask this question on one of the Gimp forums recently, seems > >familiar. > > > >However. > > > >Do not use Gimp, use ImageMagick. > > > >magick -density 300 infile.pdf -quality 100 outfile.png > > > >and wrap that in a bash or batch file depending on OS. > > Thank you Rich404, > > This was my first post on this issue. If it seems familiar, perhaps it's > because > it worries many people. > Surprising that on this subject Image Magic is better than Gimp. Lot of > Developpers told me that Gimp have killed Image Magic ... > Anyway Thank you a lot for your acurate answer. > > -- > YouNoOat (via www.gimpusers.com/forums) > > > ------------------------------ > > Message: 5 > Date: Fri, 13 Mar 2020 10:27:08 +0100 > From: Ofnuts <ofn...@gmx.com> > To: gimp-user-list@gnome.org > Subject: Re: [Gimp-user] Sizes of an image - display v printing > Message-ID: <ca83c670-a807-fe97-6197-b12813ade...@gmx.com> > Content-Type: text/plain; charset=iso-8859-15; format=flowed > > On 12/03/2020 19:44, chuckie wrote: > > I am little confused ... > > > > I have an image that is 828 pixels wide. > > > > If I open it in Paint, and HyperSnap or GIMP and view it at 100% and use > a > > ruler, the width of the image is about 23cm. > > > > If I drag the image into a Microsoft Outlook email (embed it) or go to > the GIMP > > Print Size window, they both report it to be 3.5cm wide! > > > > So, the GIMP editor shows it at a nice size of 23cm visually, but to > print, or > > embed it in Microsoft Outlook email it is only 3.5cm width. > > > > Why is it then that the display of it in the editor is 23cm? What > changes need > > to be applied so that the image will embed into Microsoft Outlook email > at 23cm? > > Certainly, I was expectign it to embed at the scale I see it in the GIMP > viewer > > and not the anticipate scale for printing. > > > > When you look at your picture at 100% in Gimp, Paint and other > applications, it is displayed "dot for dot", one pixel of the picture is > one pixel on your screen, and therefore it is displayed using your > screen definition? (so given the size you report we can assume that the > resolution of your display is 828/(23/2.54)=91 pixels/inch). > > On the other hand your? picture has an embedded "print definition" which > is used for printing, in your case 828/(3.5/2.54)=600 pixels/inch. This > sets a theoretical size for the picture, size at which the picture is > printed (as long as everything in the print stack abides to it). > > Print definition (in Pixels/inch), print size (in inches) and size (in > pixels) are related by the formula: > > print size = print definition * pixels > > Note that this means that you can only pick two of these values, the > third is determined by the first two. > > In Gimp you can un-tick "View>Dot for dot", in which case the picture > will be shown at the print size, if your screen resolution is properly > set? (see Edit>Preferences>Interface>Display). > > When you create the image, you should set the size in pixels big enough > so that you can print it at the required size with a print definition of > at least 200 pixels/inch (photo) preferably 300 or more if there is > text/logos or other computer-generated graphics. The advanced options in > "File>New..." let you enter a print size and print definition, and > compute the required size in pixels. > > > > ------------------------------ > > Message: 6 > Date: Fri, 13 Mar 2020 09:29:14 +0000 > From: Quin Benson <quin.ben...@gmail.com> > To: gimp-user-list@gnome.org > Subject: [Gimp-user] Decompose greyscale to layers > Message-ID: > <CAJ2cipsUMxbzJe=fp90rBHWDiTwfpsmEmuN8SF-MKvP= > k3c...@mail.gmail.com> > Content-Type: text/plain; charset="UTF-8" > > Please can anybody suggest a script or plug-in that will decompose a > posterized grayscale image to layers? Or, for that matter, posterize an > image and then decompose the various shades to layers? > > > ------------------------------ > > Message: 7 > Date: Fri, 13 Mar 2020 11:16:54 +0100 > From: vincents <for...@gimpusers.com> > To: gimp-user-list@gnome.org > Subject: [Gimp-user] Gimp 2.10 and Streetwear font (glyphs) > Message-ID: <93...@forums.gimpusers.com> > Content-Type: text/plain; charset=UTF-8 > > Hi All ! > > Thanks guys for your answers. > > I will move to Photoshop/Illustrator for this time :( :( :( > > Regards, > > Vincent > > -- > vincents (via www.gimpusers.com/forums) > > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > gimp-user-list mailing list > gimp-user-list@gnome.org > https://mail.gnome.org/mailman/listinfo/gimp-user-list > > > ------------------------------ > > End of gimp-user-list Digest, Vol 102, Issue 9 > ********************************************** > _______________________________________________ gimp-user-list mailing list List address: gimp-user-list@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list List archives: https://mail.gnome.org/archives/gimp-user-list
