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  Deviations associated with different image processing programs.
Posted by: ajax - 08-13-2017, 07:17 PM - Forum: General questions - Replies (10)

First, let me say that my problem may not be with GIMP but since I'm using and trying to learn GIMP this seemed like the best forum for discussion.  As a result, of some success using GIMP to edit images obtained by scanning old and often decaying photographs I decided to upgrade my camera to something capable of producing images in raw format.  I now have a Canon EOS Rebel T6 set to produce raw images.  I'm running GIMP on Win7 and have installed UFraw Version 0.19.2 in order open the raw image files.

The problem is that there is a huge difference in the picture being displayed depending on what software is being used for viewing it.  When I say view I mean that I have not attempted to do any editing (i.e., make any changes).  I don't know how to demonstrate the problem with raw images that you forum users may not be able to process.  Fortunately, the problem which at present is entirely about appearance is preserved when different software is used to prepare .jpg files for reference purposes.  I've uploaded those .jpg files to Google Photos in order to demonstrate the problem being described.  While Google Photos does perform conversion of it's own, such as scaling, the defects I'm describing are preserved in these images.  For example,

Here (https://goo.gl/photos/sAStoedrd6KEi31cA) is an image prepared by DPP4 (i.e., Canon Digital Photo Professional 4).  Based on the subject of the photograph this one is consistent with photographer's expectation.

Here (https://goo.gl/photos/o81YQcLsxK4XzYJ46)  is the exact same image prepared by GIMP.

When I say same image it means the same raw file converted to .jpg format by the respective software.  Insofar as the raw file has to be processed by UFraw in order for GIMP to obtain an image, it is quite reasonable to conclude that UFraw may have done something to it.  In fact, the process of opening the file in GIMP results in the invocation of UFraw which does display the image prior to forwarding it to GIMP.  The view displayed in UFraw does look like what is is displayed in GIMP and the resulting .jpg created by GIMP.  You might conclude it is obvious that UFraw changed it which in this case amounts to pretty dramatic alteration, especially given that I made no attempt to change anything.

However, that is not the end of story.  I also use Google Picasa for organizing photographs on my computer.  Interestingly, Picasa is able to handle the raw files.  In fact, it looks like Picasa knows how to process them even though Windows does not.  For example,

Here (https://goo.gl/photos/ex25PVZ52eWLF9Ki7)  is the exact same image prepared by Picasa.  Picasa is also the program that is launched when I open a raw file in Windows Explorer.  While, to me, it looks like the .jpg image prepared by Picasa is similar in appearance to the defective one prepared by GIMP they are distinguishable from each other.  However, both of these images appear to have the same defects when compared to what was expected from the actual subject of the photo.  The image prepared by DDP4 is consistent with expectation.  Interestingly when the Picasa viewer is launched it momentarily displays an image that looks much more like the one prepared by DPP4 but it momentarily reverts to the appearance of the referenced image prepared by Picasa (i.e., like casting a dark shadow over the entire image).

My apologies for the verbosity but the big problem here is the extent of the inconsistency in results.  Absent some kind of explanation for what is causing these variations how can one have any confidence in the accuracy of the results obtained from using any of this, or for that matter other, software for editing graphic images.  How can this phenomenon be reconciled?  I hope there is a simple explanation that amounts to my error (i.e., lack of knowledge).  Can anyone explain?

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  Brighten Portion of Image?
Posted by: tspence - 08-12-2017, 12:52 PM - Forum: General questions - Replies (13)

Can't figure out what I'm doing wrong.  Trying to lighten the face of the girl in the attached.  Steps I took:
Duplicate layer.
Use ellipse tool to select face.
Adjust selection as needed (see attached - overbrightened for emphasis).
Use eraser tool - fuzzy brush at 30% or so opacity - to get rid of line between adjusted and non-adjusted part.  Here is where I get unintended results.  Why is the eraser making a white path?  Shouldn't it fill the erased part with the full image underneath?

What am I going wrong?

Thanks!



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  How to wrap paragraph text in an image
Posted by: arun67 - 08-12-2017, 12:50 PM - Forum: General questions - Replies (2)

Hi All,

I'd like to wrap text in an outline based image. So for example, I have some text paragraph :
My house is red - a little house;
A happy child am I.
I laugh and play the whole day long,
I hardly ever cry.

I have a tree, a green, green tree,
To shade me from the sun;
And under it I often sit,
When all my play is done.

And I have an image of heart (outline only).

I want to fir the above text paragraph in the heart image.

Could you please guide me how this can be achieved

regards,
Arun



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  gimpbox for setting single window on 2.6.x gimp versions (Monoventana)
Posted by: Bengurion161016 - 08-12-2017, 03:08 AM - Forum: Extending the GIMP - Replies (1)

Hello people, i´m new to the forum. 

It happened that i wanted the set single window on my gimp without updating it. There seems to be a tool for this called gimpbox, but the official download link is dead and i don´t know where else to find it. 

Could some one in here please provide it to us. Obviously i would accept another solution to what i want as long as it works  Big Grin

I´m setting up a system with a Debian based distro called Trisquel mini.
Thanks.
In Advance.

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  clipboard entry not showing in pattern fill
Posted by: Guillaume - 08-11-2017, 11:10 PM - Forum: General questions - Replies (2)

My pattern-fill refuses to show the edit/copy item  from the clipboard.  I am doing a  tutorial by Meez "How to put text inside text".  The tutorial doesn't address this "no show" issue.  What to do to make it appear?  I see no deviation from the lesson's steps.

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  Gimp Crashes On Startup
Posted by: BrassRaptor - 08-11-2017, 09:04 PM - Forum: Windows - Replies (16)

Hey! This is the first time I've installed Gimp on this computer, and I could really use some help getting it started.

I'm running it on a Windows 7 64-bit OS, and using the latest version of Gimp, v. 2.8.22.
I installed Gimp a few hours ago and tried several solutions I found on the internet (deleting files, renaming files, leaving it alone for a period of time, etc.), but end up with the same crash report whenever I try to start it up for the first time.
It crashes immediately once it reaches the "Updating tag cache" stage.

I can't seem to get passed the initial startup of Gimp, and was wondering if anyone had any solutions...? Or perhaps recommend to me which version I should download, since maybe my OS is a little outdated for the latest version of Gimp...?

Thanks!

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  gif "jumps"
Posted by: lillr - 08-11-2017, 01:35 PM - Forum: General questions - Replies (1)

Ive added a gif to a static background image using gimp but when i play it back the gif flashes on the screen before playing again, is there anyway of getting it to still loop but without it flashing?

many thanks!

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  Totally noob, wanted to crop as photoshop but can´t
Posted by: CaLy - 08-11-2017, 12:58 PM - Forum: General questions - Replies (4)

My question is: is there a way to crop an image, like in photoshop, where you put the crop size you want, and it crops to that selection?


Source image: http://i.imgur.com/NT7yMLA.jpg  

Photoshop crop: http://imgur.com/BwCLKOS  

Gimp crop: http://imgur.com/c5HYTDh


Why the crop size isnt the same in photoshop and in gimp? And also, is it me or the quality is better in PS than gimp?  I am doing all wrong, right? Thank you for reading this n00b question.

 And have a nice friday, and better weekend in advance!  


Carlos Octavio

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  how to blend straight edges into background??
Posted by: kshaeblue - 08-11-2017, 06:48 AM - Forum: General questions - Replies (4)

I'm pasting an image over a background and the image has very blunt straight edges and it doesn't look very good. How can I get these edges to fade more into the background and stand out less?

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  inkscape png not opening properly in gimp
Posted by: marbetu - 08-11-2017, 12:47 AM - Forum: General questions - Replies (3)

Hi,
I've created an icon in Inkscape (svg saved as a png). However, it's blank when I open it in gimp (png). 
In windows explorer, I can see that the png size is 1 px x 1 px. That's crazy because the svg is 350px  x 400
I suspect this has something to do with layers because I have been clicking and trying out the options. But that just a guess. There must be a setting I've ticked inadvertently. But I just cannot figure it out. Angry
I've attached the svg and the png in case some kind soul would have the courage to have a look.
I've been at this for hours, and it's 2h30 am, so I'm off to my bed. 
This is the 4th icon I've made today and The all came out perfectly. So it's not a compatibility problem between gimp and Inkscape.
Thanks guys
Sleepy



.svg   members2.svg (Size: 53.68 KB / Downloads: 372) (SVG)

    (1x1 PNG from Gimp)

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