A font test with hinting (lower rows) and without hinting (upper rows) at 100% (above) and 400% (below). Note the increased edge contrast with the hinted text but more faithful character shape in the unhinted text. Font hinting is the use of mathematical instructions to adjust the display of an outline font so that it lines up with a rasterized grid. At small screen sizes, with or without antialiasing, hinting is critical for producing a clear, legible text for human readers. Image File history File links Font-hinting-example. ...
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Font rasterization is the process of converting text from a vector description (as found in scalable fonts such as TrueType fonts) to a raster or bitmap description. ...
Image resolution describes the detail an image holds. ...
In digital signal processing, anti-aliasing is the technique of minimizing aliasing when representing a high-resolution signal at a lower resolution. ...
Overview
For the purpose of on-screen text display, font hinting instructs which primary pixels are interpolated to more clearly render a font. In the mathematical subfield of numerical analysis, interpolation is a method of constructing new data points from a discrete set of known data points. ...
One popular and recognizable form of hinting is found in the TrueType font format, released in 1991 by Apple Computer. Hinting in TrueType invokes tables of font data used to render fonts on properly screen. One aspect of TrueType hinting is grid-fitting, which modifies the height and width of font characters to line up to the set pixel grid of screen display. The open-source FreeType font rendering engine uses an auto-hinter when such hinting data is not present or its use is restricted by a software patent. TrueType is an outline font standard originally developed by Apple Computer in the late 1980s as a competitor to Adobes Type 1 fonts used in PostScript. ...
Apple Inc. ...
FreeType is a software library that implements a font engine. ...
Software patent does not have a universally accepted definition. ...
Hints are usually created in a font editor during the typeface design process and embedded in the font. A font can be hinted either automatically (through processed algorithms based on the character outlines) or set manually. Most font editors are able to do automatic hinting, and this approach is suitable for many fonts. However, commercial fonts of the highest quality are often manually hinted to provide the sharpest appearance on computer displays. Verdana is one an example of a font that contains a large of amount of hinting data, much of which was accomplished manually by type engineer Tom Rickner, who also helped develop TrueType. Font editor is a computer program to edit fonts. ...
Verdana is a sans-serif typeface designed by Matthew Carter for Microsoft Corporation, with hand-hinting done by Agfa Monotypeâs Tom Rickner. ...
See also In digital signal processing, anti-aliasing is the technique of minimizing aliasing when representing a high-resolution signal at a lower resolution. ...
Subpixel rendering works by increasing the luminance reconstruction points of a color subpixelated screen, such as a liquid crystal display (LCD). ...
Kell factor is a number used to determine the effective resolution of a discrete display device. ...
TrueType is an outline font standard originally developed by Apple Computer in the late 1980s as a competitor to Adobes Type 1 fonts used in PostScript. ...
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