OBSERVATION TIME AND VIEWING DISTANCE IN ROC ANALYSIS : CASE OF SIMPLE SIGNAL PATTERNS

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  • ROC 評定における観察時間と観察距離 : 単純な信号の場合

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We investigated the influence of observation time and viewing distance in ROC rating with simple signal patterns. We measured ROC curve varying observation time and viewing distance with the same sample film sets and same observation environments. To control these factors correctly, we made special observation equipment. When the observation time was varied, 5, 10 sec and free, there was no significant difference for visual detection performance. When viewing distance was varied, 50cm and free, there was no significant difference for visual detection performance.

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