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  Systematic comparison Krita and GIMP
Posted by: mikolaskova - 02-22-2017, 08:26 AM - Forum: General questions - No Replies

Hello,

does anybody know about an accessible systematic comparison between Krita and GIMP?

I know about the general differences like photo editing - GIMP and painting-Krita and the raster graphics editor comparison on wikipedia, I know some differences from my personal use, but maybe somebody has a more systematic argument list with ad- and disadvantages?

Or what could be arguments for GIMP and against Krita? (Personally I'm using both of them but in case of less experienced users and less flexible workspace I need to decide and argue)

Thanks and regards,

Adriana

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  Image map coordinates
Posted by: Xaris - 02-21-2017, 07:38 PM - Forum: General questions - Replies (1)

Hello. I am trying to do an ImageMap . I am using polygon selection. Do you know if there is a way that can select an area (maybe by color or by magic wand) to find the coordinates? Polygon selection is not the best solution.

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  Script for Image color Temperature
Posted by: LondonUK371 - 02-21-2017, 07:11 PM - Forum: Extending the GIMP - Replies (16)

Hello there,

I am using Gimp 2.9.3 downloaded from http://www.partha.com/ and I am looking for a script to change the Color Temp of a layer. I have founded this script "colortemp" and installed it but unfortunately it's not working with my version of Gimp.

Error Messages are:

Error: eval: unbound variable: RED-LUT

Plug-In 'Convert Color Temperature' left image undo in inconsistent state, closing open undo groups.

The window of this script is:
[Image: gimp-colortemp.jpg]
Script URL: http://registry.gimp.org/node/73


My goal is to get this result which is a photo of my screen :
[Image: 367280Testtemperaturenuages.jpg]
(Left with Color Temperature changed - Right side: Original colors)

I have noticed that some of my artworks are more beautiful with the soft SunsetScreen which change the colour temperature of my screen on night :
[Image: SunsetScreen_2.png]

I have noticed the new option Color Temperature of Gimp 2.9.3 but the result is all the time too dark.

Thanks,
Vincent.

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  Installing brushes
Posted by: OurJud - 02-21-2017, 04:11 PM - Forum: Windows - Replies (5)

Hi, I'm using GIMP 2.8.16 and have just downloaded three brush packs from Texture Mate and have no idea how to add them to my GIMP.

I downloaded a pack some time ago and when I unzipped the file there was a folder called brushes which contained a dozen or so brushes. All I did was copy & paste them over to the brushes folder in my GIMP folder and everything worked great.

This time, though, when I unzip each of the files I downloaded from Texture Mate, all that's in there is a jpeg of the brush pack preview, and an ABR file (whatever that is) with the brush pack's title, i.e texturemate-treebranches1.abr

What am I doing wrong please?

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  Editing GIFs
Posted by: Ofnuts - 02-21-2017, 10:18 AM - Forum: Tutorials and tips - No Replies

Editing GIF is possible, but... the GIF is an indexed-color format, pixel colors are coded on one byte (256 values) that are really indexes into a "color map". So you have a maximum of 256 colors across all frames(*). When you are in indexed-color format, there are several restrictions:

  • Many filters and tools won't work (and will be grayed out in the menus)
  • Layer opacity is binary (fully opaque, fully transparent, there is no partial opacity)
  • All the colors you add are mapped to the closest existing color in the color map, so your blue may well turn red if there is no blue in the initial GIF... and for the same reason, the colors of whatever you paste in are also mapped to colors in the color map.
So, in many cases, you will start by changing the image mode back to RGB (Image>Mode>RGB) which lifts the restriction above. But keep in mind that when you will export the GIF, these restrictions will apply again. In particular, if you added new colors, then some colors of the original image will be dropped from the color map and the corresponding pixels from the original image will be given another color. This will usually translate into a grainy look or jagged edges.

This isn't really Gimp's fault. GIF isn't an "edit" format, it is a "presentation" one. Editing a GIF, while possible, is a bit like editing a PDF instead of editing the original document (.DOC, .ODT...)

(*) a more recent GIF variant allows 256 colors per frame, but Gimp doesn't support it.

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  How do I create a scale drawing from an image?
Posted by: Smoo - 02-20-2017, 06:08 PM - Forum: General questions - Replies (3)

Hi all, I'm new to the forum and new to Gimp.

I'm a blacksmith and fabricator, and what I want to do is print life size drawings of objects from images so that I can use them as templates for cutting steel etc..

So lets say I wanted to make a replica of a knife from a picture. I import the image, cut round the knife, re-orientate it and correct perspective(if necessary), re-scale it to real life dimensions, create a line drawing version and print it out. I also need to be able to print things which cover more than one page for large objects, even things which could be a metre long or more.

I had a bit of a go but quickly started to come unstuck. I was able to draw round the knife, but I couldn't make it a new layer of it's own. Also when I rotated it, the top and bottom were outside of the layer boundry and I couldn't figure out how to stop it cropping the image.

I can probably do the line drawing bit ok. Unless I need specific angles and symmetry. But I'll figure that out when it comes up.

If anyone can point me in the right direction that'll be awsome!

Cheers

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  Plugin?
Posted by: sallyanne - 02-20-2017, 05:52 AM - Forum: Extending the GIMP - Replies (4)

Saw something about this in here but cannot find anything now Sad 
I downloaded ufraw so I could work on raw photos as well as jpgs, the program has a link in it to open up in gimp but nothing happens when I click on it. Saw there was some trouble with it so I downloaded the nufraw, says it can be used as a plugin to gimp?
Where do I put it? it is a 'tar.gz' file Huh

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  Image size on hover
Posted by: anon_private - 02-17-2017, 09:08 PM - Forum: General questions - Replies (13)

I have made some icons.

I have placed them on the desktop.

When I hover the house over the icons, I note a square shape around the icons, but, in a few of them, I see a larger rectangle. I have cropped all the images.

I would like them all to be uniform.

Advice please.

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  Help with modifying a text letter
Posted by: chrisj - 02-15-2017, 06:10 PM - Forum: General questions - Replies (2)

Hi,
Thanks for putting up this Forum.

I have the text letter O in a layer(see attached), and I filled in the center almost completely (with pencil tool), but left a little unfilled, so it would look similar to a round head with a smile(see attached), however it looks kind of like a jagged smile.
Can you suggest a way to re-do so that the "smile" looks a little smoother (not so jagged)?
Thanks



Attached Files Image(s)
       
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  'Up arrow' on value slider bar?
Posted by: OurJud - 02-14-2017, 09:37 PM - Forum: General questions - Replies (7)

I don't know if I'm missing something but there doesn't appear to be any logic or sure-fire means of getting the mouse cursor to switch to the little 'up arrow' icon which allows you to quickly change the values of brush size, opacity etc.

The other options are using the 'up and down' buttons on the slider, or to kind of drag it with the '|' icon, the latter of which is very fiddly and ineffective.

As you hover the mouse cursor over the value bar it will occasionally switch to the 'up arrow', but as I say there appears to be no rhyme or reason as to when it does this.

Am I missing something or is this normal behaviour?

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