Effects of cue saliency in an assisted target detection system for search and rescue

Giang, Wayne C.W.; Keillor, Jocelyn

doi:10.1109/tic-sth.2009.5444444

Cited by 2 publications

(6 citation statements)

References 11 publications

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“…The ATD cues were demonstrated to be useful in a dynamic sensor display: high brightness and low brightness cue conditions resulted in a significant improvement in sensitivity over the nocue condition. These results support the finding from Giang and Keillor (2009) that ATD systems can provide an improvement to performance over not having such a system. This effect occurs even when the ATD system is not 100% reliable.…”

Section: Discussionsupporting

confidence: 87%

“…None of the three cued conditions differed from each other in terms of total designations made, number of correct detections, or sensitivity. This differed from the previous static-display experiment in which large differences in response time as a function of cue brightness were observed (Giang & Keillor, 2009). Faster response times are desirable in a SAR task because it increases the probability that a SAR operator will detect a cue on a rapidly updating sensor display.…”

Section: Discussioncontrasting

confidence: 69%

“…Circular cues of increased brightness were used to show the result of the simulated ATD system (as in Giang & Keillor, 2009). These cues were created by using a partially transparent white circle overlay on the sensor window at the location of the object of interest.…”

Section: Apparatus and Stimulimentioning

confidence: 99%

“…There were four levels of cue brightness: high (19.4 cd/m 2) , medium (14.2 cd/m 2) , low (9.3 cd/m 2) , and none. The high and medium brightness cue conditions were matched with the high and low brightness conditions from the previous experiment (Giang & Keillor, 2009). A pilot test showed that these cue brightness settings were easily differentiable.…”

Section: Apparatus and Stimulimentioning

confidence: 99%

“…A previous experiment (Giang & Keillor, 2009) explored how cue saliency, manipulated by changing the brightness of a circular cue, would impact an operator's ability to scan a display for a target. It was thought that under some conditions highly salient cues might disrupt visual scanning of the display, potentially resulting in poorer than normal performance for uncued items.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Brightness of Assisted Target Detection Cues in a Simulated Search and Rescue Task

Giang

Keefe

Keillor

2010

Proceedings of the Human Factors and Ergonomics Society Annual

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Assisted target detection (ATD) systems are designed to direct the user's attention to relevant areas of the display, but the majority of the research into the use of such systems does not consider the design of the cue itself. Within a search and rescue (SAR) context, there is a possibility that cues designed to facilitate effective search could in fact distract a SAR operator's search of the terrain, reducing the probability of locating a crashed aircraft. In order to determine if salience matters in the design of an ATD system for video-based sensor systems, it is important to study the impact of highly salient cues on visual search. In a previous experiment where the saliency of a cue was varied using different levels of cue brightness in a search task with static imagery, it was found that the more salient cues produced faster response times without any detrimental effects on accuracy. In the present experiment we used dynamic imagery from a SAR simulator. We found that cues of different brightness improved the sensitivity (d') of participants when compared to conditions in which no cues were available, but there was no evidence of any differences between the different levels of cue brightness. These findings suggest that cue brightness may not influence the salience of cues as much as one might expect in the context of a full-motion simulation. Other visual dimensions such as visual onsets or colour may potentially play a larger role in determining the saliency of ATD system cues when used in a task involving motion such as SAR.

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Section: Discussionsupporting

confidence: 87%

Section: Discussioncontrasting

confidence: 69%

Section: Apparatus and Stimulimentioning

confidence: 99%

Section: Apparatus and Stimulimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Brightness of Assisted Target Detection Cues in a Simulated Search and Rescue Task

Giang

Keefe

Keillor

2010

Proceedings of the Human Factors and Ergonomics Society Annual

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Investigating Methods for Integrating Unmanned Aerial Systems in Search and Rescue Operations

Weldon

Hupy

2020

Drones

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Unmanned aerial systems (UAS) are increasingly being used in search and rescue (SAR) operations to assist in the discovery of missing persons. UAS are useful to first responders in SAR operations due to rapid deployment, high data volume, and high spatial resolution data collection capabilities. Relying on traditional manual interpretation methods to find a missing person in imagery data sets containing several hundred images is both challenging and time consuming. To better find small signs of missing persons in large UAS datasets, computer assisted interpretation methods have been developed. This article presents the results of an initial evaluation of a computer assisted interpretation method tested against manual methods in a simulated SAR operation. The evaluation performed focused on using resources available to first responders performing SAR operations, specifically: RGB data, volunteers, and a commercially available software program. Results from this field test were mixed, as the traditional group discovered more objects but required more time, in man hours, to discover the objects. Further field experiments, based on the capabilities of current first responder groups, should be conducted to determine to what extent computer assisted methods are useful in SAR operations.

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Effects of cue saliency in an assisted target detection system for search and rescue

Cited by 2 publications

References 11 publications

Effect of Brightness of Assisted Target Detection Cues in a Simulated Search and Rescue Task

Effect of Brightness of Assisted Target Detection Cues in a Simulated Search and Rescue Task

Investigating Methods for Integrating Unmanned Aerial Systems in Search and Rescue Operations

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