Abstract

In some industrial inspection processes, multi-process, handling workers are required for entering the results of visual inspection tests without using their hands, for efficiency or hygiene reasons. We developed a hands-free visual inspection system by using temporal characteristics of saccadic eye movements. The proposed system is free from the Midas touch problem, i.e., the difficulty in developing an eye-typing interface owing to the difficulty in differentiating between intentional blinks and gazes and natural ones. For verifying the system, an experiment was conducted where five subjects performed a visual inspection task. The average defect detection rates were 85.8%, and no Midas-touch-related errors were observed. Results of error analysis showed that redesigning of the system interface would lead to an enhancement of the system performance.

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