I have difficulty using the perspective tool.  After adjusting one side, I try to adjust the other side but the first one moves.  Is there a way to anchor the corners so you can go to another one without the first one moving?

Thanks in advance for any advice.

Hi, 
I practice ididology and would like to be able to superimpose the chart below over the iris of the eye on a separate layer. For this to work, I need to remove the white and make this section of the iridology chart see through, but leave the black lines intact. How do I do this in Gimp? Also, is there anyway to change the black to another colour, such as yellow, to make the black lines more visible when superimposed on an iris image. Thanks in advance !

As a very new newbie might I have some advice on removing the title from the image on a book cover and replacing it with the general background mixture of cloud and sky? 

Might there be a You Tube clip that could help? 

Many thanks.

Hi all.
First post here and new to Gimp. I would like to create a logo in the form of a sphere, that has a piece missing from it. Think of it in 2d form as a circle with a piece missing (pie chart style). Adding to that, a name across the sphere too.
Any info on the how to for this would be greatly appreciated.
Cheers.
J

Please see attached image.

I have roughly cropped the driver - inverted the selection, then cut, to delete the background. Then I have feathered the edges and then 'Colour to Alpha' to completely get rid of a background, so I can put the cropped part on any colour.

However my problem is, obviously all the white / very light areas of the cropped selection are also deleted because my colour to alpha was to remove white. So if i place on a dark backround, it shows through.

How do I retain 'ALL' the original colours from the cropped selection but still have no background.

I'm sure there's a much easier way but I'm new at this so apologies!

Any advice appreciated!

Thanks

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1) Using the Blend tool (shape: bilinear, repeat: triangular shape), fill a layer with thin stripes (3-4 pixels, you can zoom to help). These stripes can have a slant (in practice it's best if they have a random angle, this make the result look less regular):

   

2) Duplicate the layer and rotate it by 90% (you can also create a second layer, possibly with other colors, and create stripes roughly perpendicular to the first one on it).

3) Set the top layer to "Dissolve" mode and set its opacity to 50%

   

I would like to know if GIMP has this feature . . . in photo shop, it' is called removing keystoning from photos of paintings. That's not a genuine name. It's how others talk about this feature.

What removing keystoning does is allow you to straighten up the edges off a photo of a painting. Usually, it is quite difficult to set up a painting so that the photo of it is perfectly square. In photoshop, this is the procedure for removing/straightening the edges of the photo of the painting:

Removing keystoning from a photographed rectangular work is not difficult in Photoshop. Use the Crop tool to get within a quarter inch of your painting, (but not too close). With the NAVIGATOR, ZOOM IN to at least 100%, or much more. Now SELECT/SELECT ALL. Go to EDIT/TRANSFORM/DISTORT. You will find in the corners, 4 small box buttons. Drag each of these out one at a time until you get each corner of your painting pulled tight to the corners of the image file frame. Press ENTER or RETURN (Mac), to accept these changes. Any perspective distortion present in the original image will be corrected now.

To get the proportions or aspect ratio of your painting back on track, take measurements of your original painting, go to IMAGE/IMAGE SIZE, disable the CONSTRAIN PROPORTIONS checkbox, so you can alter them. Now type into the height and width dimension boxes, the actual measurements of your painting. Since this may increase your file size to something overwhelming, you can reduce the pixels per inch to something much smaller than 300dpi to something like 96 dpi, or 72 dpi. Press OK, and your painting will be flat, square, true proportioned, and looking good! Remember to go back and reset the CONSTRAIN PROPORTIONS checkbox in IMAGE SIZE, for the next time you use that function

If anyone knows how to do this in GIMP, please let me know . . . Thanks

Hi everyone, I'm new here but just after a bit of advice!

I would like to know how to replicate the attached image.

I have looked everywhere but with no luck, maybe i'm typing in the wrong things!

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Super n00b here. My colors are appearing very desaturated compared to how they appear in the color picker (see attached). Does anyone know why this is happening or how to fix it? Thanks!

So I know there are many posts about using tablets and getting gimp to detect the tablet as an input device, but I'm guessing that my problem is new enough that it hasn't quite been posted about yet, or it's too scarce for me to find.

I have the new Surface Pro, i7, 1TB, windows 10, and the new Surface Pro Pen, model 1776. I am using Gimp version 2.8.22. I am not super familiar with Gimp, or with any paint program. I have dabbled with it before for very simple projects, but I struggled big time, so there is a good chance that I'm just being a newb, but I see that this issue comes up a lot on other platforms.

My pressure sensitivity works fine on Windows Ink. In gimp, by default, the pen draws exactly the same quality as the mouse does. no pressure sensitivity. I have played with the dynamic brush settings. I've copied a brush and tweaked the curves and checked different boxes. I got the velocity sensitivity to appear, although not in any sense that was useful for me. Anyway, playing with the dynamic brush settings has no affect on pressure sensitivity. I found the Edit > preferences and input devices menus. Neither the pen nor the tablet appear as a device. Just core pointer. There doesn't appear to be any interface for me to detect a new device, and resetting the devices has no effect. The Available Input Devices are DirectX Direct input, Mouse Wheel, Mouse Buttons, and Keyboard. I tried searching for drivers for the tablet or pen, but I didn't have any luck. Any advice is welcome. Thanks