New developments in low-bit rate videotelephony for people who are deaf.
This study was designed to evaluate the picture quality requirements for three visual communication modes: speechreading, fingerspelling, and sign language. Video recordings of everyday spoken, fingerspelled, and signed sentences were made, and some recordings were processed using a computer simulat...
| Publicado en: | Journal of Speech, Language & Hearing Research Vol. 40; no. 6; pp. 1425 - 1434 |
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| Autores principales: | , , , , |
| Formato: | pictorial research tables/charts Journal Article |
| Publicado: |
American Speech-Language-Hearing Association
Dec1997
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=107297683&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 107297683 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10924388 1SM jtl: Journal of Speech, Language & Hearing Research issn: 10924388 maglogo: N pubinfo: dt: Dec1997 vid: 40 iid: 6 pid: 42 pub: American Speech-Language-Hearing Association place: Rockville, Maryland artinfo: ui: 107297683 107297683 1998076592 10.1044/jslhr.4006.1425 NLM9430761 107297683 ppf: 1425 ppct: 9 formats: fmt: @attributes: type: T tig: atl: New developments in low-bit rate videotelephony for people who are deaf. aug: au: Woelders WW Frowein HW Nielsen J Questa P Sandini G sug: subj: Visual Perception Sign Language Lipreading Deafness Pictorial Methods Technology Comparative Studies Photography Trends Videorecording One-Way Analysis of Variance Two-Way Analysis of Variance Descriptive Statistics Human ab: This study was designed to evaluate the picture quality requirements for three visual communication modes: speechreading, fingerspelling, and sign language. Video recordings of everyday spoken, fingerspelled, and signed sentences were made, and some recordings were processed using a computer simulation of the IBIDEM technology: a videophone based on a novel type of visual sensor. This retina-like sensor, implemented in the camera, has a high resolution in the central part and a degrading resolution in the peripheral part of the picture. Two independent variables were examined: frame rate (10 and 15 frames per second) and spatial resolution (6000 and 8000 pixels per frame). Twenty-four people who were prelingually deaf participated, 8 in each communication mode. The results showed a marked effect of frame rate on speechreading. Fingerspelling and sign language were not affected by frame rate, and spatial resolution had no effect on any of the three communication modes. pubtype: Academic Journal doctype: pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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