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Colour moire interferometry for physical sensing using a standard web camera
Linköpings universitet, Institutionen för fysik, kemi och biologi, Tillämpad Fysik. Linköpings universitet, Tekniska fakulteten.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Tillämpad Fysik. Linköpings universitet, Tekniska högskolan.
2010 (engelsk)Inngår i: Measurement science and technology, ISSN 0957-0233, E-ISSN 1361-6501, Vol. 21, nr 10, s. 105305-Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Digital moire patterns are an effect seen in digital pictures when a high-contrast periodic object being imaged interferes with the periodic image detector in the camera. This is often an undesired effect, which is usually removed through various filtering processes. However in this work we demonstrate the ability to use a deliberately created moire pattern to measure the physical distance of an object from a web camera with a resolution of 131 mu m. This measurement principle is then adapted to measure weight as a ubiquitous scale with a resolution of 240 mu g.

sted, utgiver, år, opplag, sider
Iop Publishing Ltd , 2010. Vol. 21, nr 10, s. 105305-
Emneord [en]
interference, speckle and moire patterns, image forming and processing, optoelectronic device characterization, design and modelling
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-60233DOI: 10.1088/0957-0233/21/10/105305ISI: 000281787100022OAI: oai:DiVA.org:liu-60233DiVA, id: diva2:355866
Merknad

Original Publication: Stephen Macken and Daniel Filippini, Colour moiré interferometry for physical sensing using a standard web camera, 2010, MEASUREMENT SCIENCE and TECHNOLOGY, (21), 10, 105305. http://dx.doi.org/10.1088/0957-0233/21/10/105305 Copyright: Iop Publishing Ltd http://www.iop.org/

Tilgjengelig fra: 2010-10-08 Laget: 2010-10-08 Sist oppdatert: 2017-12-12
Inngår i avhandling
1. Integrated Optical Solutions for Ubiquitous Sensing
Åpne denne publikasjonen i ny fane eller vindu >>Integrated Optical Solutions for Ubiquitous Sensing
2010 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Ubiquitous chemical sensing aims at exploiting consumer electronic devices as temporary chemical sensing platforms. These devices are a highly disseminated infrastructure, not presently being exploited for chemical sensing purposes. The goal of the ubiquitous chemical sensing field is to create the methodologies and adapted devices to profit from this unexploited resource.

DVD drives, flat bed scanners and computer screens used in combination with web cameras, and mobile phones have been demonstrated as measuring platforms, during the past 10 years.

In particular the combination of computer screens with web cameras, a technique called the computer screen photo-assisted technique (CSPT), is the most versatile approach to support multiple types of optical detection phenomena, and together with mobile phones are the most ubiquitous type of platforms.

The versatility of CSPT comes from the ease with which one can configure a spectrally controlled, 2D micro-positioned, linearly polarized, wide angle and internally modulated illumination with a programmable screen, just by controlling the displayed contents. Concurrently, the imaging devices in CSPT enable one to capture arbitrary assay layouts, the evaluation of which can then be numerically customized.

The full exploitation of the CSPT platform requires optically adapted sensing interfaces and specialized methods, in order to increase sensitivity and make use of all available information, for a thorough and complete chemical sensing analysis. In this thesis I have explored the foundations of CSPT sensing on integrated devices, developing methods and sensing’s interfaces that provide enhanced optical detection customized to the CSPT platform.

sted, utgiver, år, opplag, sider
Linköping: Linköping University Electronic Press, 2010. s. 63
Serie
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1355
HSV kategori
Identifikatorer
urn:nbn:se:liu:diva-63709 (URN)978-91-7393-269-1 (ISBN)
Disputas
2010-12-15, Plank, E-huset, Campus Valla, Linköpings universitet, Linköping, 10:15 (engelsk)
Opponent
Veileder
Tilgjengelig fra: 2010-12-30 Laget: 2010-12-30 Sist oppdatert: 2020-02-19bibliografisk kontrollert

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