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Advantages And Disadvantages Of Sign Language

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As most sign language users are untrained in reading notation systems there is need to presentoutput of a translation in a Sign Language space. Morrissey (2008) and Othman and Jemni(2011) applied the technique of translation into a writing notation in their systems. Two mainoptions have been made of use in sign language synthesis.The first main method of sign language synthesis is to use concatenated recordings of videos toproduce the sequence of gestures required. Recordings of a signer perfoming gestures are storedand retrieved in some form of storage system. This approach has the advantage of providingmore lifelike signing comparable to what one would experience in real life. Also the likelihood oferrors is reduced by having a professional …show more content…

Naqvi (2007) in his survey showedthat most BSL signers preferred video-based sign synthesis over signing avatars and SignWritingnotation. This method however faces some limitations in its implementation. Producing therecorded videos for the translation can be cumbersome and any videos with errors would haveto be reproduced in whole which might pose a problem when an expert signer is not readilyavailable. Also the concatenated output video will suffer from stilting no matter how muchthe system can be optimised. This is due to the fact that the concatenated video would bemade up of several individual videos with several gestures thus making it feel less natural.Moreover, in order to produce high quality content the videos would have to be produced in ahigh quality format thus increasing storage and in some cases bandwidth costs for transmaissionof the video.Research has been conducted into solving the problem of discontinuity betweenconcatenated videos. Solina et al. (2001) and Chuang et al. (2006) have made attempts togenerate smooth and fluent …show more content…

Chuang et al(2006) proposes a method that searchesthrough the collection of video clips and calculates the most suitable transition betwwen thejoining sign clips. The method makes use of a non-uniform rational B-spline approach for theclip selection. One fault in making use of this method is due the need for a large database ofclips so as to come up with the best possible transition movements between signs. Also theprocess involving the selection makes the overall system take a huge perfomance hit. Solina etal(2001) proposes a system where each of the video clips in the database has the same start andend position. in this case, it is suggested that the signer starts and ends the sign at the sameposition at the with both arms on the chest of the signer’s body. Thus in joining clips togetherthere is no transition movement. The main drawback of this system being that the resultantvideo would result in an unnatural siging sentence even though there is smmoth transitionwithin the video. it also additionally a more advanced method applying computer vision tochoose the most suitable transition between video clips.An alternative method to using recorded video for sign synthesis is

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