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an image that is not rectangular can be filled to the required rectangle using transparent surroundings; the image can even have holes (e.g. be ring-shaped) in a run of text, a special symbol for which an image is used because it is not available in the character set, can be given a transparent background, resulting in a matching background.
This logo image consists only of simple geometric shapes or text. It does not meet the threshold of originality needed for copyright protection, and is therefore in the public domain . Although it is free of copyright restrictions, this image may still be subject to other restrictions .
A rubber mask is one made of rubber such as latex or silicone, or a soft plastic like polyvinyl chloride, as a form of theatrical makeup or disguise. [1] [2] Typically, such masks are designed to be pulled over the head, or cover only the wearer's face and are supported in the back by ties or a strip of elastic.
In image processing, a kernel, convolution matrix, or mask is a small matrix used for blurring, sharpening, embossing, edge detection, and more. This is accomplished by doing a convolution between the kernel and an image .
There was a great sacrifice of pumpkins from which to make transparent heads and face, lighted up by the unfailing two inches of tallow candle. [ 20 ] In 1879's Funny Nursery Rhymes , a poem admonishes children to avoid being similar to untrustworthy "Master Jack o' Lantern," described as a "wicked, deceiving boy" similar to a will-o'-the-wisp ...
An interesting example of a sports mask that confounds the protective function is the wrestling mask, a mask most widely used in the Mexican/Latin lucha libre style of wrestling. In modern lucha libre, masks are colourfully designed to evoke the images of animals, gods , ancient heroes , and other archetypes .
At run time, to put the image on the screen over the background, the program first masks the screen pixel's bits with the image mask at the desired coordinates using the bitwise AND operation. This preserves the background pixels of the transparent areas while resets with zeros the bits of the pixels which will be obscured by the overlapped image.
A photomask (also simply called a mask) is an opaque plate with transparent areas that allow light to shine through in a defined pattern. Photomasks are commonly used in photolithography for the production of integrated circuits (ICs or "chips") to produce a pattern on a thin wafer of material (usually silicon ).