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AA - Antialiasing

Antialiasing is the smoothing of the image or sound roughness caused by aliasing. With images, approaches include adjusting pixel positions or setting pixel intensities so that there is a more gradual transition between the color of a line and the background color. With sound, aliases are removed by eliminating frequencies above half the sampling frequencies.

 

 

AF - Anisotropic filtering

Anisotropic filtering (AF) is a feature of some video cards that sharpens the details of the fading-away part of a 3D object that recedes into the distance. Think of the text in the titles at the beginning of the Star Wars movies that is presented in large letters and then scrolls back into the distance. As it scrolls off, it becomes fuzzy and hard to read. In a 3D image, you may want a comparable effect to retain the sharpness of an object as it recedes; anisotropic filtering does this.

 

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