Select the color you'd like to make transparent using one of these methods. This window, which displays colors, allows you to click the color that you would like to make transparent. The background and foreground colors are the ones you see at the bottom of the Toolbox window.Ĭlick the "From" text box and GIMP opens the Color to Alpha Color Picker window. You can click one of these options if you’d like to make one of those colors transparent. Right-click the “From” box and you will see a menu containing the following options: Foreground Color, Background Color, Black and White. There are several ways to get a color into that text box. This text box holds a color that you would like to make transparent. This window has a "From" box below the preview image. The Color to Alpha feature allows you to choose a color in your image and make it transparent. We'll soon explore others in upcoming articles.Click "Color" from the menu bar and select "Color to Alpha." The Color to Alpha dialog window opens and shows a small preview of your image. Several other ways exist to remove a background from a photo. Copy and paste it on a newly created transparent layer, then move that layer to the bottom of the layers. Open your sky and resize it to the width of your photo. Now the only thing left is to add a transparent layer and paste a different sky into it. See the little dots across the tops of the trees? Those dots and the dotted lines over the top are moving, which means that's your selection. My threshold was 35, and I got the following: You may have to play with the threshold setting to get only the sky, but you can click, then adjust and click again. Now, choose the Fuzzy Select tool, and click on the sky. First, choose Layer > Transparency > Add Alpha Channel. I want to replace it with something more colorful.Īs you can see, the sky has almost no color at all, even after I used some of the above tweaks on it. In the photo below, the sky is almost white with no color at all. Fortunately, you can remove the background in GIMP, which enables you to replace the sky with something a lot more interesting. Let's remove the sky and replace it with something better. Sometimes, you shoot what you think is a perfect shot, but the sky is one big blob of grey-blue. If you're left with harsh edges around the areas of color that you've adjusted, drag the Overlap slider to the right to help blend them better.Īfter editing a bit more, I came up with this result. It just increased the green in the foreground. Here, I've set the lightness for green up a bit. To make grass and foliage look greener and more vivid, increase the Lightness level for green. You can make a sky look bolder and bluer by focusing on the blue and cyan colors, and set the Lightness slider to a darker level. You can adjust the red, magenta, blue, cyan, green, and yellow parts of your image separately by choosing the color and using the Lightness slider. A good rule is to set the saturation to a level that looks okay, then just drop it back a little. Be careful because it's very easy to oversaturate your images. The Saturation slider will boost your colors. Depending on what you do with your photos, you might want vivid colors or subdued colors.Ĭlick on Colors > Hue-Saturation. Tweaking the colors of your photos can make dramatic effects. The good thing about this is that you can keep clicking different grays in different parts of the picture until you find one that you're happy with. The color of the whole photo will update. With the eyedropper selected, find an area of gray in the photo and click on it. This will let you set a gray point in your image, an area of neutral color off which all the other colors will be based. Choose Colors > Levels, and toward the bottom of the window that opens, click on the middle eyedropper icon. If you aren't happy with the automatic results, there's always another way to do things in GIMP. Similarly, you may not like the results you get. While it looks to me to be closer to the scene I remembered when I took the photo, I'll have to do some more later. In the photo below, the blue sky almost takes over the whole photo.Ĭhoose Colors > Auto > White Balance, and it should be instantly corrected. Sometimes your camera will react strangely to the light conditions in the scene you want to photograph, and the photo may have a blue (or strange) hue to it, when the colors are obviously supposed to be different. In an ongoing effort to provide you with several ways to tweak your photos, I have found a few more tips that you can use in GIMP.
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