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GIMP > Tool box > Color picker tool [o] > pick up grey pixels in a plain or in water; GIMP > Layer > New layer (Ctrl+Shift+N) > Layer type : •Foreground color : a new grey layer should now hide your topographic data; GIMP > "Layers, Channels, Paths,..." window > Layer tab > Mode : divide (on this grey layer on the top of the list of layers)
In the program, layers can be stacked, merged, or defined when creating a digital image. Layers can be partially obscured allowing portions of images within a layer to be hidden or shown in a translucent manner within another image. Layers can also be used to combine two or more images into a single digital image. For the purpose of editing ...
Centre or crop an image: fr: Inkscape or The Gimp Centre or crop an image Level 1 tutorials media:Tutorial-cartography_(basic).svg: Inkscape Introduction to vector map making with Inkscape: download, open with Inkscape and follow the exercises Create and color map zones: fr: Inkscape Create and color map zones freehand.
An image being edited in GIMP can consist of many layers in a stack. The user manual suggests that "A good way to visualize a GIMP image is as a stack of transparencies," where in GIMP terminology, each level (analogous to a transparency) is called a layer. [71] Each layer in an image is made up of several channels.
The result of applying several of these modes depends linearly on the pixel level of the top layer. In such cases, when the top layer is purely black, one gets a certain transformation of the bottom layer (which may be just a purely black or purely white image). When the top layer is purely white, one gets another such transformation.
XCF, short for eXperimental Computing Facility, [1] is the native image format of the GIMP image-editing program. It saves all of the data the program handles related to the image, including, among others, each layer, the current selection, channels, transparency, paths and guides.
One way to brighten shadows in image editing software such as GIMP or Adobe Photoshop is to duplicate the background layer, invert the copy and set the blend modes of that top layer to "Soft Light". You can also use an inverted black and white copy of the image as a mask on a brightening layer, such as Curves or Levels.
The background image is used as the bottom layer, and the image with parts to be added are placed in a layer above that. Using an image layer mask , all but the parts to be merged is hidden from the layer, giving the impression that these parts have been added to the background layer.