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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.
GIF animation of an Apollonian sphere packing with transparent background. Transparency in computer graphics is possible in a number of file formats.The term "transparency" is used in various ways by different people, but at its simplest there is "full transparency" i.e. something that is completely invisible.
In computer graphics, alpha compositing or alpha blending is the process of combining one image with a background to create the appearance of partial or full transparency. [1] It is often useful to render picture elements (pixels) in separate passes or layers and then combine the resulting 2D images into a single, final image called the composite .
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.
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. The background image is used as the bottom layer, and the image with parts to be added are placed in a layer above that.
Instead of using vector-based lines, shapes, and polygons to create an image, a vexel is typically created using a raster program's support for transparent layers. Each transparent layer is given a solid (or sometimes gradient [ 5 ] ) shape and a display ordering that when displayed together with other near shape layers appears to create a ...
The difference between a small and large Gaussian blur. In image processing, a Gaussian blur (also known as Gaussian smoothing) is the result of blurring an image by a Gaussian function (named after mathematician and scientist Carl Friedrich Gauss).
a background pixel, b; a composited adetpixel, c; and α, the opacity value of the foreground pixel. (α = 1 for an opaque foreground, α = 0 for a completely transparent foreground). A monochrome raster image where the pixel values are to be interpreted as alpha values is known as a matte.