Posts in Category "Rasterizer"

June 19, 2013

Adobe CFF font rasterizer accepted by FreeType

Last month we announced that Adobe, in collaboration with Google and FreeType, contributed its CFF font rasterizer technology to FreeType. Today we are happy to let everyone know that the Adobe CFF Engine has been accepted by FreeType and the Adobe-enhanced rasterizer is now on by default.

We’d like to thank everyone who tested the Adobe CFF Engine and reported issues during the beta period. The code was released as a “mature” beta but testers did find a few issues and an improved version of the rasterizer is now being delivered to all devices that use the latest version on FreeType (version Continue reading…

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May 1, 2013

Adobe contributes font rasterizer technology to FreeType

Today we are pleased to announce that Adobe has contributed its CFF rasterizer to FreeType. The code is now available for testing in the latest beta version of FreeType. This open source project, aimed at improving CFF rasterization in devices and environments that use FreeType, is a collaboration between Adobe, Google and FreeType.

Modern fonts use one of two outline formats – TrueType or CFF. TrueType was developed by Apple in 1990, while CFF (the Compact Font Format) was developed by Adobe as a second-generation form of the Type 1 format (often called PostScript fonts) that Adobe first released in 1984. Either TrueType or CFF can be used in OpenType fonts. The two share many qualities, but differ in two primary ways: they use different math to describe the curves in letterforms, and they have different styles of “hinting.” (Hinting = providing guidance to the rasterizer to ensure each letterform is represented as faithful as possible in a limited set of pixels.) TrueType puts most of the emphasis on instructions built into the font, while Type 1 and CFF rely more on intelligence in the rasterizer. This makes the quality of the rasterizer particularly important, and Adobe expects its contribution to FreeType will produce a noticeable improvement for CFF fonts in environments that use FreeType. Continue reading…

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