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  Batch Blending Images
Posted by: ruairiseosamh - 11-23-2022, 03:50 PM - Forum: Extending the GIMP - Replies (4)

Hello,

I'm trying to blend two folders of images together using mode LCh Colour. I can get it working for one image at a time but am struggling to automate it. I have tried Python-fu and BIMP, but haven't been able to get them to work for this problem.

Any advice?

Thanks

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  move staves to equal corrected dimensions
Posted by: denzjos - 11-23-2022, 02:40 PM - Forum: Tutorials and tips - No Replies

I used a plugin made by Markku Koppinen also named Ottia Tuota : Perspective Transform - 4 points to 4 points
I made a new layer under the 'music page' layer, layer 'white'
Made a copy of the 1st stave (layer 'music line copy') 
Made a path along the 'music line copy' (small blue path - consists of 3 lines / path 'source')
Copy the path to a new layer, scale it to 200% and moved it to the top of the 'white' layer (on the picture not visble / path 'move to')
Use the Ottia Tuota plugin (set 'keep original layer' to 'yes')
Now the layer 'music line copy' is enlarged and moved to the top of the 'white' layer as layer 'music line copy/perspective transform'
Second try with an angled stave  (I copied and rotated for this example as layer 'angle line'):
Made a path along this music line (small red path - consists of 3 lines / path ' angled')
Moved the 200% blue path from the enlarged stave a litle down (big blue path / visible on the picture - path 'move to')
Use the Ottia Tuota plugin (set 'keep original layer' to 'yes')
Now the layer 'angle line' is straightened and enlarged and moved under the first enlarged line, layer 'angle line / perpective transform'
Lot of arrows, but easy to understand (I think...)
   
The paths dock :
   


.xcf   music page.xcf (Size: 818.03 KB / Downloads: 485)

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  Can someone help me report this bug?
Posted by: Drachenbauer - 11-22-2022, 10:57 PM - Forum: General questions - Replies (8)

Hello
If i export an indexed (palette generated from graphic-colors) graphic with transperencies as png, there appear weird things at reimport:
After closing and reimporting there is always a random colored extra cell in the index-palette of the graphic.
And often all pure black (all rgb channels 0) pixels are turned into transparency.

I decided to report it here:
gimp bug-report
But this needs an account and i cannor receive the gonfirmation mail

Can someone report it for me there, please?

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  Gimp Panorama Plugin
Posted by: Terry - 11-21-2022, 04:15 PM - Forum: Extending the GIMP - Replies (3)

I just installed Linux Mint 21 x64 with Gimp 2.10.30. I would like to install a panorama plugin in Gimp. I see three choices Pandora, Hugin, and Stitch Panorama.  Pandora looks like it may be out of date, Will it work with Gimp 2.10? Stitch Panorama requires Gimp be compiled with python support. Is the version of Gimp that comes with Mint 21 have python support? 
Has anyone used these on Gimp 2.10 and what were your impressions?

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Question Blur, change mode, save as
Posted by: tkemmere - 11-21-2022, 09:50 AM - Forum: Scripting questions - Replies (8)

Hi,

I have a process that I need to perform multiple times in the future, so I started looking into the Script-fu documentation and tutorial on gimp.org. I can sort of follow the explanations and if I would keep at it for a day or so I might be able to get somewhere. (Edit: Actually, I'm not sure if I could manage it).

I decided to turn to this forum and ask the open question whether anybody (who is obviously infinitely more experienced  Smile ) is willing to get me going with a basic script. You can take this question two ways:
Arrow He's just being a lazy bum and let us do the work... (Please then let me know if a question like this is 'not done').
Arrow Oh, that's easy, I'll put something simple down, then he can take it from there and tweak and learn Script-fu...

My objective is to create an image in 5 shades out of a black and white picture. But before turning it into the shades, it needs to be Gaussian blurred to an X amount. The amout of blur depends on the picture. So the solution is trial and error. I do GB 10, 15, 20, 25, 30. Then I look at the results to select the best one.

Imagine the base-image is opened. The repetitive actions then are:
- Blur picture Gaussian blur 10;
- Image > Mode > Indexed 5, optimal palet, max colours 5;
- Save as pic10.jpg Same folder No compression;
- Undo;
- Undo;
- Blur picture Gaussian blur 15...
and so on.

Is there someone out there willing to give it a shot? I will also continue reading/working on it.

Thanks!  Shy Thomas.

PS. I'm using GIMP 2.10.22.


An overview of the work and that I can come up with myself.

The first step would be to set a Range of variables for the blur. Like {10, 15, 20, 25, 30}. I have no idea how to do that.

Then the first of the Range is loaded into variables 'X-value' and 'Y-value'. I have no idea how to do that.

Start logging steps to undo into a group. This is what I found to record the two steps thereafter into a group:
(gimp-image-undo-group-start image?)

Then comes the Blur script step. That I found:
(plug-in-gauss run-mode image drawable horizontal vertical method)
(plug-in-gauss 1 image? drawable? X-value Y-value 1)

Then comes the change image mode. That I found too:
(gimp-image-convert-indexed image dither-type palette-type num-cols alpha-dither remove-unused palette)
(gimp-image-convert-indexed image? 0 0 5 TRUE TRUE ignored?)

Stop logging undo steps.
(gimp-image-undo-group-end image?)

Next is Save as.
(file-jpeg-save run-mode image drawable filename raw-filename quality smoothing optimize progressive comment subsmp baseline restart dct)
(file-jpeg-save 1 image? drawable? Pic+X-value+.jpg Pic+X-value+.jpg 1 0 0 0 no_comment 4 0 0 dct?)

The script step to perform an the undo group. I couldn't find.
Something like (gimp-image-undo-now! image?)

Or maybe Undo-group-start and end are not needed, because at this point one can just do Gimp-Undo twice. But I can't find Gimp-Undo.

Increase variables 'x-value' and 'y-value' to next in Range. I have no idea how to do that.

Exit if Range is finished. I have no idea how to do that.

Run from the top. I have no idea how to do that.

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Photo Isometric images for blog - Help or Point to Online Tutorial
Posted by: paulsharpe85 - 11-21-2022, 01:52 AM - Forum: General questions - Replies (2)

Hey everyone,

I've been trying to figure out how to create blog cover images in the style of a website theme that I purchased but haven't had any luck.

Can anyone show me or point me to an online tutorial for creating images like these ??  I know they're SVGs with sortof isometric shapes and gradient backgrounds, but I can't put it all together.  

   

   

Thank you!

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  Editing music scores help please.
Posted by: Retired - 11-20-2022, 06:34 PM - Forum: General questions - Replies (6)

Hi,

For the last two days I've gone round in circles using both Gimp & Irfanview in an attempt to modify violin music scores.

   

I'm 75 and just learning to play my violins in my small music studio; the sheet music scores are placed on a bench music stand but my eyesight isn't up to reading them whilst playing a violin hence I want to modify by deleting sections whilst enlarging the sections remaining to fit an A4 page when printed.

   

I can delete the unwanted sections as seen but then I get stuck wasting no end of time trying to enlarge the remaining sections to 8" x 1.75" and stacking them to fill the new spaces. I can enlarge each but don't know how to move them as wanted. I'm also having problems printing the 8 x 1.75 using my HP Laserjet P1102W mono printer. I want to print in Portrait then I can place three pages onto the stand meaning dividing each line but I could also print in landscape. I'd prefer to use Gimp.

   

My studio in June; I've now got four violins and a Balalaika plus lots of recording gear; all I need now is to sort out the music scores to suit me then I can concentrate on learning to read music and play my violins.

Any help will be most welcome.

Kind regards, Colin.

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  Template window is empty
Posted by: charlie84 - 11-20-2022, 05:34 PM - Forum: OSX - Replies (3)

GIMP 2.10.32 on macOS High Sierra, Template window contains nothing, it is empty. What can I do? Thank you.


[Image: Schermata-2022-11-20-alle-18-28-07.png]

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  How to precisely cut texture to match alpha channel?
Posted by: remunaw12 - 11-20-2022, 11:03 AM - Forum: General questions - Replies (5)

Hi.
First sorry if my word choise is confusing, Im an amateur so I might not understand some term.
Im trying to edit game asset. How do I make a cut on texture to precisely match the alpha channel shape? Using fuzzy tool can be done but it only make a solid cut, some semi transparent will made into solid cut.
In layman's term, how do I make alpha channel as a cast and use it to cut a flat texture so that it will have the exact same transparency?



Edit: Some illutration what Im trying to do.
[Image: How-to.jpg]

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  A gif output is always larger?
Posted by: 28QiGkMfTYDN3dP9tn1S - 11-20-2022, 04:53 AM - Forum: General questions - Replies (2)

There is a gif file, when I input it in GIMP and output it as another gif, it is always obviously larger than the input gif. Why? I tried some methods to optimize it.

Sorry I am not able to add an attachment.

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