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Article
Publication date: 1 January 2006

Christine Connolly

To present the specifications and the technologies underpinning some new high‐speed cameras, and explore their applications.

Abstract

Purpose

To present the specifications and the technologies underpinning some new high‐speed cameras, and explore their applications.

Design/methodology/approach

Describes the industrial, military and other applications of high‐speed imaging. Traces the recent technical developments in sensors for visible and infrared light. Then describes some specific high‐speed cameras.

Findings

CMOS sensors have now taken over from CCD in high‐speed visible cameras. Microbolometers have made low‐cost uncooled cameras available for infrared imaging. Applications range from serious research and development topics, such as air‐bag and seat‐belt performance and combustion studies, to investigations of natural phenomena and analysis of sports equipment.

Originality/value

Monitors the progress of imaging technology and describes its current capabilities to the interested reader.

Details

Sensor Review, vol. 26 no. 1
Type: Research Article
ISSN: 0260-2288

Keywords

Article
Publication date: 1 June 2005

Christine Connolly

To present two non‐contact methods of measuring vibrations and impact events.

Abstract

Purpose

To present two non‐contact methods of measuring vibrations and impact events.

Design/methodology/approach

The paper concentrates on the practical capabilities and underlying technology of commercial high‐speed CMOS cameras and laser Doppler vibrometers.

Findings

The instruments are used to analyse modes of failure and to test quality in a very wide range of products. They are also used to develop safety and protective devices, and to study natural phenomena.

Originality/value

A practical guide to the tools available, with some example applications of interest to production engineers.

Details

Sensor Review, vol. 25 no. 2
Type: Research Article
ISSN: 0260-2288

Keywords

Content available
Article
Publication date: 1 September 2004

57

Abstract

Details

Sensor Review, vol. 24 no. 3
Type: Research Article
ISSN: 0260-2288

Keywords

Article
Publication date: 12 January 2015

Alexander Wettstein and Marion Scherzinger

The purpose of this paper is to examine naturally occurring episodes of aggressive interaction among adolescents in residential correctional programmes. The aims of our study were…

Abstract

Purpose

The purpose of this paper is to examine naturally occurring episodes of aggressive interaction among adolescents in residential correctional programmes. The aims of our study were twofold. First, the development of a new camera-glasses method, and second, the method's applicability in the study of aggressive adolescents in residential care.

Design/methodology/approach

Based on a mobile assessment strategy, the paper developed a new methodology for in-the-field recording of environmental conditions in which aggressive behaviour arises. The authors used glasses with an inbuilt camera worn by research subjects to record observational data. In the particular study presented here the authors used camera-glasses to observe the material and social environments of eight aggressive adolescents in a residential treatment programme and of a contrast group of four non-aggressive adolescents living at home.

Findings

The crucial methodological findings are that camera-glasses successfully record the social and physical environments of aggressive adolescents from their perspective in relation to their environment and interlocutors, and that the camera-glasses method does not generate high reactivity. The results show that aggressive adolescents in residential care use direct and reactive forms of aggression, and that their aggressive behaviours occur predominantly in settings with limited adult supervision. In residential care aggressive behaviour is, paradoxically, an effective strategy for individuals to gain regard and social status among peers and to push their interests among staff.

Research limitations/implications

An obvious limitation is the reliance on a small sample which limits the generalisation of the results.

Practical implications

For residential facilities it is crucial to reduce the occurrence of low supervised social situations in order to minimise peer contagion. Furthermore, staff and educators need to be trained to use deescalating response strategies when dealing with adolescents’ aggressive behaviour, precisely deescalating strategies which neither involve acquiescence nor surrender to pressure.

Originality/value

Our investigations demonstrate that the camera-glasses method is a promising new assessment technique which has applicability in various fields of adolescent research.

Details

Journal of Aggression, Conflict and Peace Research, vol. 7 no. 1
Type: Research Article
ISSN: 1759-6599

Keywords

Article
Publication date: 14 April 2010

Alexander Wettstein and Mascha Jakob

The General Aggression Model (GAM) by Anderson & Bushman (2002) reveals the great depth of research on internal processes. Research on naturally occurring aggressive interaction…

Abstract

The General Aggression Model (GAM) by Anderson & Bushman (2002) reveals the great depth of research on internal processes. Research on naturally occurring aggressive interaction episodes in specific material and social environments, however, is still largely lacking. How can information about environmental requirements and social processes relevant to aggression be acquired methodically? Based on an ambulatory assessment strategy, we discuss various apparatus‐based and direct observation strategies. Finally, we introduce an innovative methodology for recording in the field the environmental conditions in which aggressive behaviour arises, using the technical device of glasses with an inbuilt camera. Our investigations so far show that the camera‐glasses method is a promising new data collection technique that can be applied fruitfully in various fields of aggression research.

Details

Journal of Aggression, Conflict and Peace Research, vol. 2 no. 2
Type: Research Article
ISSN: 1759-6599

Keywords

Article
Publication date: 1 March 1999

Marc Loinaz and Bryan Ackland

Compares the relative merits of CCD and CMOS based video cameras. Describes the design and fabrication of CMOS sensors which include considerable hardware computational elements…

Abstract

Compares the relative merits of CCD and CMOS based video cameras. Describes the design and fabrication of CMOS sensors which include considerable hardware computational elements on the same chip as the sensor array. These enable the device to output picture information in a form that is directly compatible with multimedia PC application requirements.

Details

Sensor Review, vol. 19 no. 1
Type: Research Article
ISSN: 0260-2288

Keywords

Article
Publication date: 12 January 2010

M. Habibi and S.M. Sayedi

The purpose of this paper is to present a novel image‐labeling CMOS sensor for modulated marker detection.

Abstract

Purpose

The purpose of this paper is to present a novel image‐labeling CMOS sensor for modulated marker detection.

Design/methodology/approach

An image scene with multiple objects, each identified by a flashing light‐emitting diode (LED), is captured by the sensor. The LED's frequency is a representation of the object ID‐tag. The sensor detects and labels the objects by identifying the signal frequencies. The processing is performed in‐pixel and, since the object detection task is simplified, power dissipation is reduced. A 64×64 pixel sensor is designed in the 0.6 μm CMOS technology.

Findings

Simulation results show successful object identification. At a frame rate of 250 fps the measured power consumption is 11 mW, which is less than those of the previously reported object detection solutions. The application of the presented sensor is shown in several different robotic fields such as unmanned aerial vehicles (UAVs) vision, household robots and industrial robots. It is also explained how the sensor can be used for low‐power localization and position detection of the robot vehicles.

Originality/value

The paper shows that the sensor is a suitable solution for low‐power landmark detection and robot localization.

Details

Industrial Robot: An International Journal, vol. 37 no. 1
Type: Research Article
ISSN: 0143-991X

Keywords

Article
Publication date: 20 June 2016

Luiz Carlos Paiva Gouveia and Bhaskar Choubey

The purpose of this paper is to offer an introduction to the technological advances of the complementary metal–oxide–semiconductor (CMOS) image sensors along the past decades. The…

1525

Abstract

Purpose

The purpose of this paper is to offer an introduction to the technological advances of the complementary metal–oxide–semiconductor (CMOS) image sensors along the past decades. The authors review some of those technological advances and examine potential disruptive growth directions for CMOS image sensors and proposed ways to achieve them.

Design/methodology/approach

Those advances include breakthroughs on image quality such as resolution, capture speed, light sensitivity and color detection and advances on the computational imaging.

Findings

The current trend is to push the innovation efforts even further, as the market requires even higher resolution, higher speed, lower power consumption and, mainly, lower cost sensors. Although CMOS image sensors are currently used in several different applications from consumer to defense to medical diagnosis, product differentiation is becoming both a requirement and a difficult goal for any image sensor manufacturer. The unique properties of CMOS process allow the integration of several signal processing techniques and are driving the impressive advancement of the computational imaging.

Originality/value

The authors offer a very comprehensive review of methods, techniques, designs and fabrication of CMOS image sensors that have impacted or will impact the images sensor applications and markets.

Details

Sensor Review, vol. 36 no. 3
Type: Research Article
ISSN: 0260-2288

Keywords

Article
Publication date: 18 April 2017

Ter-Feng Wu, Pu-Sheng Tsai, Nien-Tsu Hu and Jen-Yang Chen

Visually impaired people have long been living in the dark. They cannot realize the colorful world with their vision, so they rely on hearing, touch and smell to feel the space…

405

Abstract

Purpose

Visually impaired people have long been living in the dark. They cannot realize the colorful world with their vision, so they rely on hearing, touch and smell to feel the space they live in. Lacking image information, they face challenges in the external environment and barrier spaces. They face danger that is hundreds of times higher than that faced by normal people. Especially during outdoor activities, they can only explore the surrounding environment aided by their hearing and crutches and then based on a vague impression speculate where they are located. To let the blind confidently take each step, this paper proposes sticking the electronic tag of the radio-frequency identification (RFID) system on the back of guide bricks.

Design/methodology/approach

Thus, the RFID reader, ultrasonic sensor and voice chip on a wheeled mobile robot link the front end to the crutch. Once the blind person nears a guide brick, the RFID will read the message on the tag through the voice broadcast system, and a voice will inform the visually impaired person of the direction to walk and information of the surrounding environment. In addition, the CMOS image sensor set up in the wheeled mobile robot is used to detect the black marking on the guide brick and to guide the blind to walk forward or turn around between the two markings. Finally, the lithium battery charging control unit was installed on the wheeled mobile robot. The ATtiny25 microcontroller conducts the battery charge and discharge control and monitoring of the current battery capacity.

Findings

The development of this system will let visually impaired people acquire environmental information, road guidance function and nearby traffic information.

Originality/value

Through rich spatial environment messages, the blind can have the confidence and courage to go outside.

Article
Publication date: 16 January 2017

Richard Bloss

The purpose of this paper is to review some of the latest in new vision sensor technologies as well as other innovative sensor products being developed and reaching the market.

Abstract

Purpose

The purpose of this paper is to review some of the latest in new vision sensor technologies as well as other innovative sensor products being developed and reaching the market.

Design/methodology/approach

This study is a review of published information and papers on research as well as contact and discussions with researchers and suppliers in this field at the Vision Show and the Ceramics Show.

Findings

Microelectronics and electrochemical technologies have been a major factor in technology advancements of sensors for a wide range of applications. Vision sensors have become very important, as applications such as drone aircraft and driver less cars have dramatically grown. Technology has advanced and so sensors are becoming smarter, are smaller, offer better resolution, are much more sensitive than in the past and address previously unserved applications.

Originality/value

Readers may be very excited to learn of the many advances in vision and other technologies which are coming to the sensor field. Such sensors are addressing new applications that were not previously possible which are now being served.

1 – 10 of 225