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Re: Basic character set analyzer [message #20003 is a reply to message #19996]

Mon, 09 February 2009 08:42

mirek is currently offline

mirek
Messages: 13980
Registered: November 2005

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cbpporter wrote on Sun, 08 February 2009 06:45

luzr wrote on Sat, 07 February 2009 15:53

I mean, for missing char in Arial, I would check some sans-serif font first rather than trying e.g. Times New Roman..

I've given this issues a lot of thought, but I don't think there is a good way to do this.

Well, first possibility is fixed table of substitutions (the number of widely used fonts is quite small IMO).

Second is PANOSE:

http://en.wikipedia.org/wiki/PANOSE

http://msdn.microsoft.com/en-us/library/ms534014(VS.85).aspx

(-> Win32 provides PANOSE number)

- not sure whether FreeType supports PANOSE... Also, another question is whether fonts actually support it

Third: Perform matching based on visual appearance. That is a bit though, but still possible.

Can be based on raster data processing or even curve processing....

E.g. examining "I" character raster, it should be quite easy to identify serifs, width of central line (and perhaps some other aspects I do not see yet...). By comparing width of 'l' and 'm', you should be able to tell the font is monospace (that is, if this is not stored as attribute somewhere in the font).

Mirek

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[Message index]

		Basic character set analyzer By: cbpporter on Sat, 13 December 2008 11:26
		Re: Basic character set analyzer By: cbpporter on Wed, 17 December 2008 11:21
		Re: Basic character set analyzer By: cbpporter on Wed, 17 December 2008 17:18
		Re: Basic character set analyzer By: mirek on Thu, 18 December 2008 11:34
		Re: Basic character set analyzer By: cbpporter on Sat, 24 January 2009 11:02
		Re: Basic character set analyzer By: mirek on Sat, 24 January 2009 14:00
		Re: Basic character set analyzer By: cbpporter on Sun, 25 January 2009 10:14
		Re: Basic character set analyzer By: mirek on Sun, 25 January 2009 10:56
		Re: Basic character set analyzer By: cbpporter on Wed, 28 January 2009 19:53
		Re: Basic character set analyzer By: mirek on Fri, 30 January 2009 08:53
		Re: Basic character set analyzer By: cbpporter on Fri, 30 January 2009 09:15
		Re: Basic character set analyzer By: mirek on Fri, 30 January 2009 09:28
		Re: Basic character set analyzer By: cbpporter on Fri, 30 January 2009 09:59
		Re: Basic character set analyzer By: cbpporter on Sat, 31 January 2009 13:22
		Re: Basic character set analyzer By: mr_ped on Sat, 31 January 2009 14:18
		Re: Basic character set analyzer By: cbpporter on Sun, 01 February 2009 00:53
		Re: Basic character set analyzer By: cbpporter on Sun, 01 February 2009 16:03
		Re: Basic character set analyzer By: mirek on Mon, 02 February 2009 09:40
		Re: Basic character set analyzer By: cbpporter on Mon, 02 February 2009 11:19
		Re: Basic character set analyzer By: mirek on Sat, 07 February 2009 14:53
		Re: Basic character set analyzer By: cbpporter on Sun, 08 February 2009 12:45
		Re: Basic character set analyzer By: cbpporter on Sun, 08 February 2009 12:55
		Re: Basic character set analyzer By: mirek on Mon, 09 February 2009 08:47
		Re: Basic character set analyzer By: cbpporter on Mon, 09 February 2009 18:38
		Re: Basic character set analyzer By: mirek on Mon, 09 February 2009 08:42

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