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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.
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.
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 .
The top layer (the bird) is partially transparent, so the background clearly can be seen through its wing. In this picture the top layer has a drop shadow , a red color overlay of 40%, a gradient overlay from red to yellow of 20% opacity, and a slight bevel effect.
The Photoshop and illusions.hu flavors also produce the same result when the top layer is pure white (the differences between these two are in how one interpolates between these 3 results). These three results coincide with gamma correction of the bottom layer with γ=2 (for top black), unchanged bottom layer (or, what is the same, γ=1; for ...
Adobe Photoshop: The best in the business, it has lots of plug-ins, is used by professionals, but is relatively expensive, though sometimes older versions can be found for less. GIMP : The GNU Image Manipulation Program is a popular open source software available for Linux , Windows , and macOS .
A single palette entry in an indexed color image can be designated as a transparent color, in order to perform a simple video overlay: superimposing a given image over a background in such way that some part of the overlapped image obscures the background and the remaining not. Superimposing film/TV titles and credits is a typical application ...