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Koulierakis Ioannis Siolas Georgios Efthimiou Eleni Fotinea Stavroula-Evita Stafylopatis Andreas-Georgios 《Machine Translation》2021,35(3):323-343
Machine Translation - In this paper we present a recommendation system for (semi-)automatic annotation of sign language videos exploiting deep learning techniques, which handle handshape... 相似文献
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In this paper, we present how creation and dynamic synthesis of linguistic resources of Greek Sign Language (GSL) may serve to support development and provide content to an educational multitask platform for the teaching of GSL in early elementary school classes. The presented system utilizes standard virtual character (VC) animation technologies for the synthesis of sign sequences/streams, exploiting digital linguistic resources of both lexicon and grammar of GSL. Input to the system is written Greek text, which is transformed into GSL and animated on screen. To achieve this, a syntactic parser decodes the structural patterns of written Greek and matches them into equivalent patterns of GSL, which are then signed by a VC. The adopted notation system for the representation of GSL phonology incorporated in the system’s lexical knowledge database, is Hamburg Notation System (HamNoSys). For the implementation of the virtual signer tool, the definition of the VC follows the h-anim standard and is implemented in a web browser using a standard VRML plug-in. 相似文献
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Stavroula-Evita Fotinea Eleni Efthimiou George Caridakis Kostas Karpouzis 《Universal Access in the Information Society》2008,6(4):405-418
This paper presents the modules that comprise a knowledge-based sign synthesis architecture for Greek sign language (GSL).
Such systems combine natural language (NL) knowledge, machine translation (MT) techniques and avatar technology in order to
allow for dynamic generation of sign utterances. The NL knowledge of the system consists of a sign lexicon and a set of GSL
structure rules, and is exploited in the context of typical natural language processing (NLP) procedures, which involve syntactic
parsing of linguistic input as well as structure and lexicon mapping according to standard MT practices. The coding on linguistic
strings which are relevant to GSL provide instructions for the motion of a virtual signer that performs the corresponding
signing sequences. Dynamic synthesis of GSL linguistic units is achieved by mapping written Greek structures to GSL, based
on a computational grammar of GSL and a lexicon that contains lemmas coded as features of GSL phonology. This approach allows
for robust conversion of written Greek to GSL, which is an essential prerequisite for access to e-content by the community
of native GSL signers. The developed system is sublanguage oriented and performs satisfactorily as regards its linguistic
coverage, allowing for easy extensibility to other language domains. However, its overall performance is subject to current
well known MT limitations. 相似文献
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