![]() ![]() It should be an own layer in the image now. ![]() Save the “wood” background (you can find the download link at the beginning of the tutorial), choose File / Open as Layers and select the wood. Then the layer will disappear and the hair details should be visible on a transparent background.Īt the end, we want to insert a new background and do some final adjustments. Your layers dialog should now look like this:Ĭlick on the eye symbol next to the grayscale layer above. To fixate it on the layer, use the “Anchor” button of the layer dialog (at the bottom, 2nd from right). Important: After that, the pasted layer is a floating selection. Click on the small white area next to the background layer in the layer dialog to ensure that you’re working on the mask and not on the picture itself. Right-click into the layers dialog: “Add layer mask” (White) Now we have to create a layer mask and copy the details from the grayscale layer to this mask. We have a perfectly adjusted grayscale layer now that determines which regions become visible or transparent. You can use it to make the remaining grey tones a bit brighter or darker.Īs you can see in the preview, the bright hair strands have become even brighter while the background has become darker. If you move the left control triangle towards the center, the amount of black will be reduced and become a dark grey. The gradient from black to white represents the amount of different gray tones in the image. In the dialog, you can find three moveable control triangles. In the next step everything that is white will become visible and black regions will become transparent. For this it is important to make the background completely black while the hair should become (nearly) white. Now we adjust the gray tones of the picture. Then start painting the regions that don’t contain details revelant for masking. It’s often useful to combine different brushes. Hint: Choose a very hard brush for the region at the left bottom (shoulder skin). Use a big brush size (relatively hard with some soft edge) Now we paint the parts that don’t need masking with white (the skin and the hair where’s no background). The green channel often contains details and contrasts, so the hair is masked even better. I have also amplified the red color tones (the hair contains many of them and become brighter) and reduced the blue tones so that in sum the background doesn’t become brighter. It doesn’t matter if the image becomes granular or if the face looks strange (like on the screenshot). The fine hair details should NOT blur with the background. It doesn’t have to be perfect because in the next step, we’ll do some fine-tuning. Try to make them light gray while the background (here: gray) should become darker or stay at least the same. Pay special attention on the fine hair parts. Now it is important that we achieve a good contrast between the background and Jessica’s hair.įor this you have to find out the individual settings for each image. You can see in the preview that the image doesn’t have colors anymore. Now click on “Monochrome” so the image will become grayscaled. The best way to do so is using the channel mixer: The next step is important: We reduce the layer’s color by disaturation. To do so, we have to create a copy of the background layer first:Ĭlick on the “Duplicate layer” button in the layer dialog or press Ctrl+Shift+D. Now we want to create a detailled layer mask that contains all fine details of the hair. On the image, you can see the fine hair strands and the mat gray background. This masking technique is good for strands of hair or to replace the sky. This tutorials shows a way that produces good results for fine details like strands of hair, especially for portrait photos with a simple background. Motivation There are many ways of masking objects with GIMP. ![]()
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