GIMP :: Remove All But Rectangular Area From Image
Apr 10, 2011
I want to remove all but a rectangular area from an image. I do not want to make the rest of the image white, I want it to go away. I want to just have the rectangular image pixels left.
To be explicit, I want it to be like I cut up a photo, and threw the outside away.
Is there any way to just rotate a rectangular image? I have often scanned in something that's not square, it's often a brochure that's taller than it is wide. But when I scanned it, I had turn it sideways to get the whole thing visible to the scanner. So it scans completely, but now I have an image of it that's not "up is up"-- I have "up is right" or "up is left." But now I have to do all this junkbutter: 1) Look at the canvas size, 2) make the width & height equal to the larger of the two, 3) use the Rotate tool to turn the image 90 degrees, then 4) do some magic to move the image to start at the upper-left, and 5) crop it back down to get rid of the blank space on the bottom. YUCKY! Is there some magic tool I haven't found yet that will rotate, move and crop all in one step? I just want to turn the entire image on it's side without any other fuss. Is that possible somehow? I have to assume it is, but I sure couldn't find it...
When I use the Fuzzy select tool or the select by colour tool, how can I remove the selection area around the parts that I don't want selected. For example. I have red car on a white background which I want to cut and paste to a black background. I select the white background, but although it selects all the white, it also selects other small areas on the car which are a similar colour. If the threshold is lowered too much when I use these select tools then I get a very small white border around the object when I paste it on to a dark surface. So instead of selecting using the default (15) or even less, I have to ramp it up so as the selection is closer to object and does not show the white jagged line. I thought that I could use the other selection tools with the "remove from selected" option selected, but each time I place a rectangle around the selected area that I want ot deselect, it does away with the entire selection area. I just cannot get it sussed.
I'm trying to use the crop tool to cut out the rectangular image, but I can't seem to get rid of the white border. I scanned in the image so its still showing the white paper around it, how do I get rid of this and just save the image portion?
The problem is that if one has defined a selected area in an image, using either selection by color or contiguous selection using the 'magic wand' facility, is possible to copy this selection to the Image Map facility of the image, so as to automatically define a set of coordinates as a polygon that can be used for link purposes? Perhaps there is some interim step that is required, or perhaps a special script is required?
I've never tried this in AutoCAD before. I would like to create a simple rectangular area with a circle in its center. When this area is hatched, the circle is hollowed out. Furthermore, I'd like to have this to insert into a block for stretch action manipulation. Is this possible with AutoCAD 2010?
I've tried using GIMP many times, yet I've accomplished very little, given all of GIMP's functionality. For example:
If I want to select part of an image and copy it to another area or to a new image/layer, and also FEATHER the edges, here's how I'd do it in an old graphics app I often used years ago:
1. Select the area.2. Hold Ctrl while moving selection with Move tool.3. Use the slider to soften the edges to my liking.4. Press Enter to anchor selection. Done.
And there were sliders also for opacity and other things. So very SIMPLE because the prog. was designed very intuitively. How would I accomplish the same in GIMP? Well, most of the time, I WOULD ACCOMPLISH NOTHING! At best, I'd enter values into the box, not like the result, enter new values, repeat. And that's on a good day.
Somebody write a SCRIPT/PLUGIN that allows the use of sliders exactly as described above! I desperately want to be a HAPPY GIMP user, but I'm growing ever more hopeless. I don't want to turn on my older PC just to use a graphics app that actually lets me get things done.
Some time ago, the Gimp stopped responding to my mouse in the image window. In other windows and on menus the mouse works fine (ie I can select brushes and such and use the interface without problems), but in the image window (or more precisely, the canvas area) it's as if the mouse doesn't even exist. All kinds of clicks are ignored, the rulers doesn't show the position of the cursor, and the position in the lower left also isn't updated (it isset once upon entering the window, but after that it's dead).
This originally happened out of the blue one day while using Gimp 2.2.11 . I tried upgrading to 2.2.12 and then 2.3.13, without success. I also deleted the ~/.gimp*directory in the hope that regenerating the config would fix the problem, but no.
No matter what I do, I can't make the Gimp recognize the mouse in the image window. The mouse isn't anything special, and it used to work with the exact same X config I've got now. I haven't changed the xorg.conf file in several months. The Gimp is the only application with this problem.
This is on a dual-core amd64 processor in 64-bit mode (haven't tried 32-bit), Linux kernel 2.6.18, Xorg 7.1.
I am trying to remove the person in the background of the attached image. I believe I have finally installed the resynthesizer plug-in but am not successful in removing the person behind the couple shown.
I have an image, of a woman wearing heels, and i wanna remove the old, crappy looking floor from the image, where just the feet and the heels are visible. Is this possible, and easy to do? Here is a link to the picture.. [URL] .....
Let's say I have a picture with an ugly translucent overlay, like this:
If I have a copy of the overlay that isn't transparent (or is transparent, but doesn't have anything behind it), is there a way I could use that to remove it from the original image? One application of this would be removing UIs from video game screenshots.
I have used gimp for years, and never tried to remove a blue cast from an image. I have several images I have shot over the years, of winter scenes, now I want to see them in "normal" colors. I tried a couple of plugins and gimp operations, but I have no real good results.
I need to crop-remove slices of lots of of images, so preferably in one single step. Here is a more detailed description: [URL] Since this post is about two years old, I wonder whether this is still unsupported by Gimp.
I'm looking for a technique for removing the background from an image similar to the way noise canceling headphones work.
Prior to shooting the portrait, we took a picture of the background and then, without moving the camera, took the portrait so that we were left with two images, one with and one without the subject.
Noise canceling headphones cancel sound by emitting a sound wave that is the exact opposite of the sounds they pick up from the outside. I'm wondering if there is some technique that could be used to make all pixels in the background a specific color (by mixing with its "opposite") to then improve the functionality of the fuzzy select or select by color tools.
Using Gimp 2.8 in Windows 7. I have a scanned image of a topological map. At areas where the contour lines get too close, squares appear in between the image (See attached photo). Is there a good way to remove these extra squares in the contour lines rather than tracing the lines manually?
I have a basic image and I just want to remove the background and be LEFT just with the image (i.e. No white background).
I have opened the image with Gimp and on this image I was able to "add alpha channel" which I believe needs to be done. Do I need to do anything after I add the Alpha channel?
This is what I did next:
The image is 100% and background 1.1mb. Select Fuzzy tool and position cursor over the background and click. The image and the image background have the moving dashes going around them.
Next I hit the delete key and the background goes checkered. Still there are the moving dashes around the image and the background outer square. Next I hit autocrop and I am left with a reduced checkered background around the image.
My question - what do I do from here. I just want the image with no background what so ever; also is there anything I need to do with saving too.
Previously I have saved this and when I go to use the image it appears to be much the same as the original with a white background.
If you have a photo where the camera was shaking at the time, and so there is a ghost image of the whole photo, is it possible to fix that in any way? I had a look online, and saw a link about using the Unsharp Mask filter in GIMP, but I couldn't do anything with it. I would have thought that as the ghost image is so far out, and quite a lot more faded, that something could be done.
I have a world map(.gif file) which has yellow circles on top of it. I need to erase all the them from the map. How can I do it using GIMP? Is there anyway I can get my original picture back?
I have a few images that I have saved from online that have an alpha layer in them. When I open them in GIMP, the checkerboard pattern makes it far too difficult to edit the image. When I try any of the obvious options for removing the alpha layer, the result looks awful.
How do I remove an alpha layer without changing the way that an image looks when it's viewed in an image viewer (or GIMP)?
We are trying to make a little art project with my daughter for her school, so my wife went and took pics of each of the kids in her class making a "heart shape" with their hands. I have the backgrounds that will go behind them all complete, so I just need to extract the hands. Well, I thought I was being smart by purchasing a green piece of fabric to put behind them, but this has almost caused more of a hassle. In the original hand picture, you cannot really see the problem, but after extracting the hands from the original, there is all kinds of green that has bled into the skin color of the kids' arms.
I encountered was after I outlined an image in order to remove the background around it, i could not disconnect from the outline tool (scissors). How do I do the disconnect?
I photographed a framed painting that, despite my best efforts, came out as a trapezoid rather than the rectangle I intended. The image has a slight taper in the sides going from top to bottom. The top of the image is 100% of the canvas width while the bottom of the image is perhaps 95% of the canvas width, so it is close to a true rectangle but not exact. What that means is that the bottom of the photo needs to be stretched by about 5%, the middle needs to be strecthed by about 2.5%, and the top is OK as is. Naturally, the amount of stretch required becomes progresively greater when going from the top to the bottom of the image. I'm new to Photoshop. Is it possible to perform such an image manipulation?
Can one make different (rectangular or otherwise) selections on different layers?
[e.g. I need to "fade" parts of an image in one layer, and need to "blur" different parts of the same image in a different layer... and want to save the different selections (each for "fade" and "blur" layers) for easier, future edit.]
I often use my digital camera to take pictures of flat, rectangularobjects, like framed paintings on a wall, book or album covers, orpages of documents. Of course, I can't take these pictures straighton and perfectly level, but that's OK. I know what the dimensions ofthe objects are, so I can just correct the perspective in software.
In Graphic Converter (a Mac OS X app), I just use the "Unskew"function. I simply need to select the four corners of the rectangularobject I photographed. (Guide lines connecting the four points to locate them.) After I've located the four corners, I tell it to"unskew" and a rectangular image is produced.
Does Gimp have any function like this? I found the perspective tool,but that requires me to manually shift the perspective and eyeballwhen I think a rectangular image is produced. That's not nearly as convenient.