Qualitative and quantitative assessment of video transmitted by DVTS (digital video transport system) in surgical telemedicine

Yoichiro Shima, Akina Suwa, Yuichiro Gomi, Hiroki Nogawa, Hiroshi Nagata, Hiroshi Tanaka

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Real-time video pictures can be transmitted inexpensively via a broadband connection using the DVTS (digital video transport system). However, the degradation of video pictures transmitted by DVTS has not been sufficiently evaluated. We examined the application of DVTS to remote consultation by using images of laparoscopic and endoscopic surgeries. A subjective assessment by the double stimulus continuous quality scale (DSCQS) method of the transmitted video pictures was carried out by eight doctors. Three of the four video recordings were assessed as being transmitted with no degradation in quality. None of the doctors noticed any degradation in the images due to encryption by the VPN (virtual private network) system. We also used an automatic picture quality assessment system to make an objective assessment of the same images. The objective DSCQS values were similar to the subjective ones. We conclude that although the quality of video pictures transmitted by the DVTS was slightly reduced, they were useful for clinical purposes. Encryption with a VPN did not degrade image quality.

Original languageEnglish
Pages (from-to)148-153
Number of pages6
JournalJournal of Telemedicine and Telecare
Volume13
Issue number3
DOIs
Publication statusPublished - 2007 Apr 1

ASJC Scopus subject areas

  • Health Informatics

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