HI, On 7/23/11, Vinod Kumar <[email protected]> wrote: > Dear Free and Open Developers, > > I looked at the Telugu OpenType font tables in the Perfect shaping > presentation of Shri Arjuna Rao Chavala.
My presentation link is given below http://live.gnome.org/GnomeAsia/2011Summit/Slides?action=AttachFile&do=view&target=Towards+Perfect+Indic+Rendering+on+Gnome+By+Arjuna+Rao+Chavala.pdf The presence of feature flags > indicates that Opentype is used as a Digital font. This is the approach > promoted by Microsoft Typography. Yes A simpler and elegant approach is to use > the OpenType font as an Intelligent font- Intelligent in the sense of > ISO/IEC 15285 Technical report. > > A Digital font is one whose shapes can be changed, size, boldness, italics > etc by flags or parameters embedded into the input text by a human directly > or through style sheets. > > An Intelligent font has context sensitive substitutions that allow an input > string (the logical sequence of characters ) to be transformed to an output > string of glyph ids according to a grammar. > Digital font also has context sensitive substitutions, in my understanding. Of course, your approach seems to imply a simple implementation. > This is not a speculation or a theory. The approach has been implemented > into the IndiX-2 software (Live CD, library, tools) and into the Raghu > series of IndiX-2 fonts. > A 4 page paper (google docs link inlined) describes the distinction between > using OpenType font as a Digital font or as an Intelligent font. > > Vinod Kumar, "Standards for visual syllables for Indic scripts", > ViswaBharat@TDIL, Proceedings on World Wide Web: Technology, Standards and > Internationalization, 6-7 May 2010, New Delhi, Special Issue, Vol. 35-36, > pp. 455-459. > > Also inlined is link to a 13 slide presentation that was slated to be given > at the w3c conf. > Thanks for sharing. > The Free Developers should ponder over why a scheme that complicates > software, fonts, and processing should still be pursued in a fresh > development effort. As the IndiX-II developer, I can assure you that shaping > Indic text with the "OpenType as Intelligent font" will lead to significant > improvement in the Indic rendering scene. > Currently, most development work on indic pango is being contributed by Behdad. If the existing fonts can work without and a sample implementation can be done that integrates with Pango or QT, your proposal can gain traction. > I try to get the backing of C-DAC and DIT firmly behind this approach. > C-DAC now has a new Director General, Prof. Rajat Moona from IIT Kanpur. > With Prof Rajat Moona at the helm at C-DAC, the IndiX-2 recommendations are > likely to be understood better, and we may push for it to be adopted as > Indian, Unicode, and Indic Open Font standards. > Hope this will also help in transforming CDAC in releasing font related resources under public domain/Copyleft license modes > I earnestly implore the Free and Open developers to understand the > difference between the two approaches and devote portion of their effort > into implementing the simpler approach. This could lead to, not only Indic > shaping improvements, but also affect all complex script processing (Arabic > for example). It could also end up with Microsoft adopting the Intelligent > font scheme for complex script processing instead of the other way. When > confronted with the IndiX-2 scheme, the people from Microsoft Typography > used to tell me that everyone follows the Microsoft Typography standards. > (Apple has its own AAT and IndiX-II did not follow Microsoft, but we were no > match for the wolf and the Free Software developers who followed, and still > follow, the wolf without thinking). In the rendering space, free software efforts were aimed at improving the rendering of languages and websites in a compatible way with Microsoft. If you are able to release your work under copy left license and lead the initiative to implement a pango library, your proposal can get much traction. Best wishes Cheers Arjun ------------------------------------------------------------------------------ Magic Quadrant for Content-Aware Data Loss Prevention Research study explores the data loss prevention market. Includes in-depth analysis on the changes within the DLP market, and the criteria used to evaluate the strengths and weaknesses of these DLP solutions. http://www.accelacomm.com/jaw/sfnl/114/51385063/ _______________________________________________ IndLinux-group mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/indlinux-group
