Underwater display visibility as influenced by turbidity, viewing distance, and color of illumination
Poock, Gary K.
MetadataShow full item record
The purpose of the study was to determine the effects of illumination color, viewing distance, and turbidity on a visual reading task in a totally dark, flooded environment. The reading task was to read a voltmeter and make a correct oral report of the reading. A total of 180 data points spread over 18 viewing conditions were taken for each subject. Seventeen military officers were used as subjects. Experimental conditions were presented in a random manner to all subjects. As statistical examination of the results showed that white or green illumination is better than red in reducing reading response time. Turbidity levels were significant in affecting response time showing an increased response time as the attenuation coefficient increased. There was no difference in the effect of an eight inch viewing distance versus a thirteen inch viewing distance. The error rate was constant, with no variable having a greater effect on the error rate than did other variables. The expected error rate over all variable was .037 errors per each trial taken
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
NPS Report NumberNPS55PK72051A
Showing items related by title, author, creator and subject.
Underwater display visibility as influenced by turbidity, display background color, and the color and intensity of illumination Poock, Gary K. (Monterey, California. Naval Postgraduate School, 1972-07); NPS55PK72071AThe purpose of the study was to determine the effects of water turbidity, display background color, and the color and intensity of illumination on a visual reading task in a dark, flooded environment. The reading task was ...
Shao, Ming; Fu, Yun (2017);Recognizing facial images captured under visible light has long been discussed in the past decades. However, there are many impact factors that hinder its successful application in real-world, e.g., illumination, pose ...
Xu, J. P.; Noble, M.A.; Rosenfeld, Leslie K. (American Geophysical Union, 2004);Turbidity currents are thought to be the main mechanism to move ~ 500,000m3 of sediments annually from the head of the Monterey Submarine Canyon, to the deep-sea fan. Indirect evidence has shown frequent occurrences of ...