Hot answers tagged gimp
We may be talking about a scanned color negative film stock widely used way before the invention of digital cameras. These images had a yellow and a red mask for color absorption. Hence negatives had an orange rather than a white tint: Image source: Wikipedia cc To obtain a positve color image from these sources we have to Remove the orange mask ...
GIMP has an invert command you can apply to RGB and Grayscale images: to You can acces it through Colors → Invert.
A straightforward way to do this is: Start with the base image (in its default layer). Add a new layer (with Layer Fill Type "Transparency"), and make sure it is selected. Set the foreground color to white. Select and fill the rectangle you want with the foreground color (white). Set the 2nd layer's opacity to 75%. Set the foreground color to black. Add ...
FYI: I don't believe any sort of translucent effect is occurring there. It looks to me like a simple white box is placed over the image and under the text at ~75% opacity. To achieve an actual translucent effect, do the above but also select the area of the image covered by the box and apply a blur to it at whatever settings you find appealing.
You have to add a layer mask. (Right click on Layer → Layer Mask → Add alpha channel of the layer) And then can you use the gradient tool Here is an tutorial with pictures. http://infofreund.de/gimp-transparent-gradient/
Just use one of the filters in filters/edge-detect - with some extra actions until you get what you want. What I did here: duplicated the layer, cut out the oceans (I don't know if it is your intention) by clicking on one by one with the magic-wand, right click on the layer in the layers dialog, add alpha channel, then edit->cut. After that, , ...
The fastest way I can think of: Select your selection tool (rectangle select or circle select) It isn't necessary to do this first, but it's necessary for step two. CtrlA to select all Enable Fixed in the selection tool options: Click on the selection to make the scaling handles appear, and scale the selection
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