Tag Archive: surface

Feb
04

Personal Clipboards

Subarea Clipboards (HandsDown)

Personal Clipboards for Individual Copy-and-Paste on Shared Multi-User Surfaces The copy-and-paste functionalities provided by clipboards are omnipresent on today’s computing devices from desktops to tablets to mobile phones. Despite this success, clipboards did not make their way to multi-user surfaces until now, because most surface computing devices cannot distinguish input from different users. To them, …

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Jan
25

GravitySpace

We use a mirror-metaphor to show how GravitySpace identifies users and tracks their location and poses

A New Approach to Tracking People and Objects Based on a Pressure-Sensing Floor GravitySpace is a new approach to tracking people and objects indoors. Unlike traditional solutions based on cameras, GravitySpace reconstructs scene data from a pressure-sensing floor. While the floor is limited to sensing objects in direct contact with the ground, GravitySpace reconstructs contents above …

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Mar
18

Filtering Microsoft Surface Finger Touches for ScatterViewItems

By default, Microsoft Surface responds to any touch, including non-finger touches for example caused by a hovering hand or a sleeve touching the table. While they can be ignored using the GetIsFingerRecognized() method and setting the Handled flag of TouchEventArgs in preview touch handlers, the ScatterView seems to be somewhat special. Although you cannot move it ScatterViewItems …

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Feb
11

Microsoft Surface 2 as Image Source for EmguCV

The Surface's raw image ready to be processed with Emgu CV

Microsoft’s new Surface (i.e., the Samsung SUR40 device) features PixelSense which offers an image similar to that of a camera-based interactive surface (some example captures). The Surface driver already does quite a bit of processing (e.g., finger and orientation recognition or tag detection). Still, there are many more possible applications using the raw image data. To …

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Feb
11

Samsung’s SUR40 for Microsoft Surface

Samsung SUR40 for Microsoft Surface

This week we received two brand new devices, namely two shiny Samsung SUR40 multi-touch interactive surfaces (i.e., Microsoft’s new Surface, or Surface 2). In my opinion, their main advantage is not size or display resolution (there are bigger surfaces out there), but lies in their sensing technology PixelSense. In a nutshell, every pixel also acts …

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Nov
18

IdWristbands for User Identification on Multi-touch Surfaces

Prototype of IdWristband

IdWristbands are designed to enable user identification for camera-based multi-touch surfaces. In this approach, users wear wristbands equipped with infrared LEDs, to provide touches with identities. The LEDs transmit coded light pulses as an identifier. We are using a specific blinking pattern to determine the orientation of the wristband in order to reliably associate corresponding …

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Nov
18

HandsDown and IdLenses

Unregistered and registered user

Biometric User Identification for Multi-touch Surfaces Based on Hand Contours HandsDown is a novel technique for user identification on interactive surfaces. It enables users to access personal data on a shared surface, to associate objects with their identity, and to fluidly customize appearance, content, or functionality of the user interface. To identify, users put down their hand flat on the …

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Nov
17

Multi-touch Table

Interiors of table

This multi-touch table I built as a research platform is based on a diffused illumination approach: 91x57cm surface (107cm diagonal, 16:10 aspect ratio) Toshiba TDP‐EW25 projector (1280x800px) Point Grey Firefly MV camera (640x480px, 60fps) with wide-angle lense Infrared illumination (850nm) Bosch Rexroth aluminium frame UPDATE I: I am now using a diffused surface illumination (DSI) …

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Nov
17

Indirect Multi-touch Interaction

Most current multi-touch devices use direct input, especially larger surfaces. In this context, we asked how much the advantages of multi-touch depend on the directness of input. An indirect multi-touch device has several potential advantages, such as interaction from a distance (remote control), different control-display ratios (allowing for larger screens), more ergonomic settings (looking straight …

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Nov
17

Multiuser-aware Surface Computing

Hand contour extraction steps

The above video shows a working prototype which allows users to identify by simply putting down their hands on the surface. This is related to a topic I became recently more and more interested in: the topic of multiuser-awareness, or user identification respectively discrimination, for interactive surfaces. Of course, there is DiamondTouch which can distinguish …

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