623,502 research outputs found

    Human activity recognition from object interaction in domestic scenarios

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    This paper presents a real time approach to the recognition of human activity based on the interaction between people and objects in domestic settings, specifically in a kitchen. Regarding the procedure, it is based on capturing partial images where the activity takes place using a colour camera, and processing the images to recognize the present objects and their location. For object description and recognition, a histogram on rg chromaticity space has been selected. The interaction with the objects is classified into four types of possible actions; (unchanged, add, remove or move). Activities are defined as recipes, where objects play the role of ingredients, tools or substitutes. Sensed objects and actions are then used to analyze in real time the probability of the human activity performed at a particular moment in a continuous activity sequence.Peer ReviewedPostprint (author's final draft

    The roles of time, place, value and relationships in collocated photo sharing with camera phones

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    Photo sharing on camera phones is becoming a common way to maintain closeness and relationships with friends and family. How people share their photos in collocated settings using camera phones, with whom they share, and what factors influence their sharing experience were the themes explored in this study. Results showed that people exhibit different photo sharing behaviour depending on who they share photos with, where the sharing takes place and what value a picture represents to its owner. In this paper, we will explain what triggers the photo sharing activity and how the sharing takes place depending on who photos are shared with and where they are shared (e.g. restaurant, pub, home). The sharing experience is hindered by the difficulty of controlling which photographs are made available to particular people; sharing with a group of people at once; and ensuring appropriate privacy measures. These findings highlight requirements for novel mechanisms for organising, sharing, and displaying photos as well as provide a better understanding of photo sharing behaviour using camera phones in collocated settings

    From Near to Far: Maria Short and the Places and Spaces of Science in Edinburgh from 1736 to 1850

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    A relatively unknown woman named Maria Theresa Short opened a popular observatory in 1835 in Ed inburgh - a time and place where men of science and property had long failed to make a viable space for astronomy. She exhibited scientific instruments to a general public, along with a great telescope and a walk-in camera obscura that projected live views of the city and continues to delight audiences to this day. To better understand Short's accomplishments, achieved as scientific and public life became increasingly closed to women, this study explores her largely untold story, and maps some of the places of science around it. Finding local contingencies, multiple sites and practices by diverse groups, it proposes that tensions within the connections between science and spectacle and the use of popularization to promote its professionalization produced gaps that even a marginal figure like Maria Short could inhabit and exploit

    Security-Camera Proposal for the Dynamy Youth Center

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    Dynamy is an educational program that sponsors a Youth Center for high schools students. Recently, Dynamy officials have considered security cameras to secure the building from outsiders. To assess Dynamy\u27s Security Camera needs, I went to the University of Pennsylvania to learn from the most secure educational facility in America. I also met with professional CCTV installers from ADT Security, who even gave a free on-site estimate. I was able to draft a security camera proposal for the Dynamy Youth Center. The proposal asks for 8 cameras to be installed by Dynamy officials to secure the facility\u27s computer labs, conference rooms, office areas, and entrance ways. The security camera proposal explains how to buy a CCTV system, where to place cameras, and how to route cabling

    USB SECURITY CAMERA

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    USB Security Camera is a new way for a cheaper and convenient security system. The objective of this project is to develop a software that can recognizes more than one USB cameras connected to a single computer and streams each camera's output simultaneously or alternately to a computer's monitor. The software was written in Visual Basic 6.0 so that it is compatible with Windows platform. The main features of the application developed are automatic picture snap, motion detector and can support any USB camera. Motion detection features is a useful features in a place where there should be no movement. Unfortunately, the main aim which is to develop software that can detect more than one camera has failed. The software is not working as planned

    Improved mirror ball projection for more accurate merging of multiple camera outputs and process monitoring

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    Using spherical mirrors in place of wide-angle cameras allows for cost-effective monitoring of manufacturing processes in hazardous environment, where a camera would normally not operate. This includes environments of high heat, vacuum and strong electromagnetic fields. Moreover, it allows the layering of multiple camera types (e.g., color image, near-infrared, long-wavelength infrared, ultraviolet) into a single wide-angle output, whilst accounting for the different camera placements and lenses used. Normally, the different camera positions introduce a parallax shift between the images, but with a spherical projection as produced by a spherical mirror, this parallax shift is reduced, depending on mirror size and distance to the monitoring target. This paper introduces a variation of the 'mirror ball projection', that accounts for distortion produced by a perspective camera at the pole of the projection. Finally, the efficacy of process monitoring via a mirror ball is evaluated
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