Helmet-mounted Camera Research Articles

The ‘First Person Shooter’ Perspective: A Different View on First Person Shooters, Gamification, and First Person Terrorist Propaganda

During the 2019 Christchurch attack, the perpetrator livestreamed footage from a helmet-mounted camera. The aesthetic similarity of the attack footage to first-person shooter (FPS) videogames has led to speculation that this might have somehow ‘gamified’ the attack. Generally, the argument for this is that the attack footage (1) imitates or resembles FPS games, gamifying attacks (2) increasing the affective appeal of propaganda by presenting it as play and thereby (3) increasing the salience of these attacks within gaming communities. This article challenges these notions. It argues that the FPS genre should not be associated with such footage due to visual similarity and is better considered in relation to film. The idea that such footage was purposefully shot to look like an FPS is unsupported, and more likely the result of practical considerations. While the framework of gamification might be useful, it should rest on interactivity, rather than aesthetic similarity.

Unsupervised Learning of Depth and Ego-Motion from Cylindrical Panoramic Video with Applications for Virtual Reality

We introduce a convolutional neural network model for unsupervised learning of depth and ego-motion from cylindrical panoramic video. Panoramic depth estimation is an important technology for applications such as virtual reality, 3D modeling, and autonomous robotic navigation. In contrast to previous approaches for applying convolutional neural networks to panoramic imagery, we use the cylindrical panoramic projection which allows for the use of the traditional CNN layers such as convolutional filters and max pooling without modification. Our evaluation of synthetic and real data shows that unsupervised learning of depth and ego-motion on cylindrical panoramic images can produce high-quality depth maps and that an increased field-of-view improves ego-motion estimation accuracy. We create two new datasets to evaluate our approach: a synthetic dataset created using the CARLA simulator, and Headcam, a novel dataset of panoramic video collected from a helmet-mounted camera while biking in an urban setting. We also apply our network to the problem of converting monocular panoramas to stereo panoramas.

A closer examination of command and control practices by incident commanders during realistic operational exercises in the Netherlands

Little scholarly attention has been devoted to understanding command and control practices among incident commanders and the extent to which these practices contribute to response safety and efficiency. This paper examines incident command and control practices of 23 battalion chiefs from a Dutch Fire Service during realistic exercises using largely identical scenarios. A helmet-mounted camera in conjunction with field observation was used to gather data. The results show that although incident command and control practices varied in detail, the strategies used were largely the same. No relationship was discovered between incident command and control practices and response safety and efficiency. A reason for the lack of significance of the command and control function was that battalion chiefs relied essentially on information and advice given by crew commanders, which did not provide a basis for insights other than those already present among crew commanders. Implications for practice are provided.

Prediction of Dangerous Moving Vehicles in Blind Spots for a Cyclist Using a Helmet-Mounted Camera

자전거에 의한 교통사고 충돌의 많은 원인 중 하나는 사각지대에서 다가오는 자동차이다. 본 논문에서 자전거에 잠재적인 위험을 줄 수 있는 이동 중인 객체를 판별할 수 있도록 헬멧에 장착한 카메라 시스템을 제시한다. 첫 번째로 도로 구역을 계산하고 도로 구역 기반 내에서의 연속 영상에 대해 자동차의 위치를 Haar-like 특징점과 AdaBoost cascade 분류기를 사용하여 할당한다. 자전거와의 충돌 확률을 평가하기 위해 ORB 특징점 매칭 기반의 새로운 알고리즘을 소개한다. 충돌 가능성이 높게 분류되면 신속하게 경고 신호를 사용자에게 전송한다. 실험은 각각 다른 날씨 환경 속에 붐비는 교통 지역에서 수행되었다. 실험 결과는 제시한 알고리즘이 사각지대에서 움직이는 자동차로 인한 위험을 예측하는데 매우 효과적이며, 이 시스템은 실시간 처리가 가능함을 보여준다.

Safety performance testing of climbing helmet-mounted cameras

BackgroundNo research establishing the effects of climbing helmet-mounted cameras on head injury biomechanics.ObjectiveEstablish the potential effects of climbing helmet-mounted cameras on the injury risks associated with falling object strikes and...

A Preliminary Examination of Command and Control by Incident Commanders of Dutch Fire Services during Real Incidents

In this paper, we attempt to get a better understanding of command and control practices of incident commanders from Dutch fire services (battalion chiefs, BCs) by examining the recordings made by helmet-mounted cameras during 55 real incidents. The aim is to examine the degree to which the BCs issued orders to front-line workers and the degree to which these orders were carried out appropriately. The results indicate that incident commanders were able to influence the work at the front line, but were generally not in control of what happened at the front line.

An Investigation of Operational Decision Making in Situ: Incident Command in the U.K. Fire and Rescue Service.

The aim of this study was to better understand the nature of decision making at operational incidents in order to inform operational guidance and training. Normative models of decision making have been adopted in the guidance and training for emergency services. In these models, it is assumed that decision makers assess the current situation, formulate plans, and then execute the plans. However, our understanding of how decision making unfolds at operational incidents remains limited. Incident commanders, attending 33 incidents across six U.K. Fire and Rescue Services, were fitted with helmet-mounted cameras, and the resulting video footage was later independently coded and used to prompt participants to provide a running commentary concerning their decisions. The analysis revealed that assessment of the operational situation was most often followed by plan execution rather than plan formulation, and there was little evidence of prospection about the potential consequences of actions. This pattern of results was consistent across different types of incident, characterized by level of risk and time pressure, but was affected by the operational experience of the participants. Decision making did not follow the sequence of phases assumed by normative models and conveyed in current operational guidance but instead was influenced by both reflective and reflexive processes. These results have clear implications for understanding operational decision making as it occurs in situ and suggest a need for future guidance and training to acknowledge the role of reflexive processes.

Situational familiarity and its relation to decision quality in ice-hockey

Field-based observation, including helmet-mounted cameras, was employed to study pattern-matching aspects of decision making in ice-hockey. We were interested in the role of situational familiarity in decision making and decision quality. Expert and non-expert players were videotaped during competition. In retrospective interviews, prompted by the game videos, players were asked about the role that familiarity (both event and rule-based), played in their decision-process. Decision quality and decision outcome were assessed retrospectively by two expert coaches. Experts described decision-making situations as ‘familiar’ twice as often as non-experts. Although rule-based decisions were more common, only for decisions based on recognition of the event, were familiar decisions rated as better quality. This pattern-matching aspect of the decision-making process and its relationship to decision quality has implications for theories of decision making in dynamic sports.

The Lancashire telemedicine ambulance.

An emergency ambulance was equipped with three video-cameras and a system for transmitting slow-scan video-pictures through a cellular telephone link to a hospital accident and emergency department. Video-pictures were trasmitted at a resolution of 320 x 240 pixels and a frame rate of 15 pictures/min. In addition, a helmet-mounted camera was used with a wireless transmission link to the ambulance and thence the hospital. Speech was transmitted by a second hand-held cellular telephone. The equipment was installed in 1996-7 and video-recordings of actual ambulance journeys were made in July 1997. The technical feasibility of the telemedicine ambulance has been demonstrated and further clinical assessment is now in progress.

The necessity of a perception-action approach to definite distance perception: monocular distance perception to guide reaching.

In this investigation of monocular perception of egocentric distance, the authors advocate the necessity of a perception-action approach because calibration is intrinsic to definite distance perception. A helmet-mounted camera and display were used to isolate optic flow generated by participants' head movements toward a target, and participants' reaches to place a stylus either in a target hole (Experiments 1, 2, and 4) or aligned under a target surface (Experiment 3) were analyzed. Conclusions are that binocular distance perception is accurate, monocular distance perception yields compression that is not eliminated by feedback, but feedback is used to eliminate underestimation generated by restriction of the size of the visual field.