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window > Layer tab > right click on a layer > right-click on the top layer > Merge down In this way you reinforce the density of the shadows resulting from this main illumination. Next usual step: see #Whitening.
Apply a "Multiply" fusion to a duplicated layer 1. Open the Shadows_315.png (or .bmp) image in GIMP. Create a duplicate layer and select <Multiply> mode to reinforce the density of the shadows resulting from this main illumination.
First make sure your image has an alpha channel. Duplicate the original layer, but make it invisible. If the background should not be transparent when you are finished, create another new layer, and choose "Alpha to Selection" from the layer menu. Deselect any part that is supposed to remain transparent, and then shrink the selection by one.
GIMP selection tools include a rectangular and circular selection tool, free select tool, and fuzzy select tool (also known as magic wand). More advanced selection tools include the select by color tool for selecting contiguous regions of color—and the scissors select tool, which creates selections semi-automatically between areas of highly ...
The top "layer" is not necessarily a layer in the application; it may be applied with a painting or editing tool. The top "layer" also is called the "blend layer" and the "active layer". In the formulas shown on this page, values go from 0.0 (black) to 1.0 (white).
Some prefer the term marquee selection, as the effect resembles the chaser lights of a marquee, and this term can be considered a synonym. Popular graphics programs, such as the GIMP and Adobe Photoshop , implement their selection tools using the marching ants effect.
In graphics software, layers are the different levels at which one can place an object or image file. 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.
The selection may also be saved in what is known as an alpha channel. A popular way to create a composite image is to use transparent layers. The background image is used as the bottom layer, and the image with parts to be added are placed in a layer above that.