Journal of Japan Society of Computer Aided Surgery
Online ISSN : 1884-5770
Print ISSN : 1344-9486
ISSN-L : 1344-9486
Originals
New Evaluation Method and Result of Video Compression Ratio and Quality for Telesurgery in Neurosurgery
Kentaro ShimizuYoshihiro MuragakiRyoichi NakamuraTakashi SuzukiHiroshi Iseki
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2009 Volume 11 Issue 2 Pages 75-80

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Abstract
We propose a new evaluation method for video of tele-neurosurgery under microscopic view. We conducted a subjective evaluation of video by 16 evaluators to determine the minimum video bit-rate required to make decisions in tele-neurosurgery under microscopic view. In this evaluation, we developed a new evaluation method that is unaffected by learning from evaluating the same videos more than one. Our results showed that a video bit-rate of at least 384 kbps was necessary in order to make decisions in tele-neurosurgery. Also, contrary to general expectation, the expert subjects scored the low quality bit-rate videos higher than the residents subjects did. Moreover, if the quality of the original picture was poor, the evaluation result was not related to the compression ratio. These finding should be took into account in future evaluation of tele-surgery systems.
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© 2009 The Japan Society of Computer Aided Surgery
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