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Tuesday, August 4, 2020 | History

3 edition of Selection techniques for laser pointer interaction. found in the catalog.

Selection techniques for laser pointer interaction.

Yan Wang

Selection techniques for laser pointer interaction.

by Yan Wang

  • 209 Want to read
  • 11 Currently reading

Published .
Written in English


About the Edition

The use of commodity laser pointers as a viable input mechanism for interacting with large displays is hampered by the lack of appropriate selection mechanisms that can replace the physical button found on other input devices. We explore the design space of possible gestural selection techniques that could replace explicit button presses. We then present a controlled experiment that compares two of the most promising gestural techniques with existing approaches. The results indicate that simple gestural selection methods outperform the previously standard dwell technique, and approach the performance of explicit button presses. Implementation issues are discussed, and gesture recognition algorithms are presented.

The Physical Object
Pagination82 leaves.
Number of Pages82
ID Numbers
Open LibraryOL19747363M
ISBN 100612914348
OCLC/WorldCa58828095

Just received my laser pointer and I'm very impressed. The device came fully charged, which was a pleasant surprise. The first thing I did was verify that the green laser is visible on a LCD TV screen. I was about to order the red version of this pointer when I read .   Selection by pointing is usually not appropriate when realistic interaction is required. (The exception might be if a laser pointer or remote control is being modeled.) Straightforward implementations result in difficulty selecting small objects in the distance. Pointing with the hand can be imprecise due to natural hand tremor [Bowman ].

The human–robot interaction system described in this paper is composed of a PC, an electric wheelchair, an ASUS Xtion camera, a laser pointer, and a Kinova Jaco robotic arm, as illustrated in Figure 1. The human–robot interaction is fulfilled by first detecting the laser point, and then determining the object and grasping pose.   MultiPoint: Comparing laser and manual pointing as remote input in large display interactions Human Media Lab remote pointing techniques performed using fingers and laser pointers, in single.

techniques that use a laser pointer. KEYWORDS Laser pointer, remote mouse, interaction technology, novel input techniques, Pebbles. INTRODUCTION With the widespread use of projection screens and laser pointers, there has been much research in the area of projection-based multi-user systems using laser pointers as interaction devices (e.g. [1, 2. mechanism works well when it is suitable to require short-range interaction. Camera-Tracked Laser Interaction: A popular laser pointer interaction scheme is to use a camera focused on a region of a wall or object where a laser spot may appear [1, 4, 7, 9, 14]. Simple computer vision techniques locate the red laser dot and follow.


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Selection techniques for laser pointer interaction by Yan Wang Download PDF EPUB FB2

This paper describes a technique using a laser pointer and a camera to accomplish Selection techniques for laser pointer interaction. book such interactions. Calibration techniques are given to synchronize the display and camera coordinates. A series of interactive techniques are described for navigation and entry of numbers, times, dates, text, enumerations and lists of items.

The issues of hand jitter, detection error, slow sampling and latency are discussed in each of the interactive techniques. Human Factors, Interaction Techniques Keywords pointing, goal crossing, laser pointers, computer-based pre-sentation 1.

LASER POINTERS AS INPUT DEVICES Use of a laser pointer can be helpful during presentations. It allows a presenter to point anywhere on a screen quickly, even when the screen is very large or located far from the presenter.

This paper presents new interaction techniques that use a laser pointer to directly interact with display on a large screen. The camera is subsequently used to detect the position of the pointing device (such as a laser pointer dot) on the screen, allowing the laser pointer to Cited by: and camera coordinates.

A series of interactive techniques are described for navigation and entry of numbers, times, dates, text,enumerations and lists of items. The issues of hand jitter, detection error, slow sampling and latency are discussed in each of the interactive techniques. Keywords Laser pointer interaction, group interaction, camera Cited by: Vision Based Laser Pointer Interaction for Flexible Screens interact with the projected image.

The camera captures the image projected and obtains the position of laser spot. The computer functions as the processing unit. Software part for the image processing consists of image processing module and coordinate mapping module. Serrar Z, Elmarzouqi N, Jarir Z and Lapayre J Evaluation of Disambiguation Mechanisms of Object-Based Selection in Virtual Environment Proceedings of the XV International Conference on Human Computer Interaction, ().

pointing techniques performed using fingers and laser pointers, in single and multi-finger pointing interactions.

The MultiPoint techniques were found suitable for interacting with vertical large displays. For exclusively single-point use cases, perspective-based. Interactive Techniques These techniques have multiple benefits: the instructor can easily and quickly assess if students have really mastered the material (and plan to dedicate more time to it, if necessary), and the process of measuring student understanding in many cases is also practice for the material—often students do not actually learn.

Adaptive Pointing – Design and Evaluation of a Precision Enhancing Technique space than the input device in motor space. This results in an offset between the de- tected pointing position and the modulated pointer by: handheld laser as a tool and objects equipped with sensors as targets.

These imply typical problems such as cognitive effort and aiming difficulties that are addressed by existing techniques. The XWand [18] allows physical world interaction by a pointing gesture for the selection.

There are two general types of selection methods. Direct selection: The person using AAC accesses a target by directly pointing to a symbol, picture, or object with a body part (e.g.

finger, hand, eye gaze) or adapted tool (e.g. laser pointer, computer mouse). Direct selection is typically the faster access method.

The idea of using laser pointers for interaction purposes is not new. They have been used for some time now as an indicator element for interacting with large dis- plays [29, 37, 39, 53].

In these. between device and pointer positions, resulting in a loss of the very directness that makes such pointing techniques so attractive in the first place. Furthermore, if the offset gets too large, the projector or laser pointer may end up outside the tracking envelope.

Similarly, pointer prediction techniques [3, 15] have been successfully used to aid. It is obvious from this analysis that OTC (over-the-counter) laser pointers will be marginally usable for auricular therapy but not realistically usable for other points.

Cold Laser System Design Factors. Tip Size. For trigger point therapy, a 6 mm tip size is great. The larger treatment area. G06F3/ — Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g.

interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or Cited by: 4. waiting for the laser pointer to be off for at least one second to signify a mouse action.

Kirstein and Muller describe a simple system with minimal interaction techniques for laser point tracking [5]. The Stanford iRoom project is investigat-ing the use of a laser pointer with special gestures and pie menus for the interaction [12].Cited by: Fig. 3 Selection of Region of Interest B.

Detection of Laser point The detection of laser point enables us to detect the laser point’s position on the captured images. To find out position of laser point in image we use RGB and HSV filter technique. After passing image through RGB and HSV filterAuthor: Dhanashri Ghorpade, S wati Devkar, Viraj L ondhe.

The other type of 3D UI involves direct interaction in a virtual 3D spatial context. In this type, the user may be using traditional (non-3D) input devices or movements as inputs, but if those inputs are transformed directly into actions in the virtual 3D space, we still consider it to be 3D interaction.

Highlights Laser pointer-style interaction is considered more natural than mouse and keyboard. We compare the two interaction techniques on an object arrangement task.

We focus on physiological effects of interaction technique and posture. We observed significant effects of technique and posture on muscle activity.

We highlight the importance of carrying out thorough EMG by: 2. Implementation of the laser pointer interaction system. In the previous section, we have obtained the diffractive pattern coordinate on the image sensor.

In the laser pointer interaction system, the emitted light spot of the laser pointer is able to guide the computer mouse cursor on the projection by: 4.

Pass the Pointer – Place a complex, intricate, or detailed image on the screen and ask for volunteers to temporarily borrow the laser pointer to identify key features or ask questions about items they don’t understand. Turn My Back – Face away from the class, ask for a File Size: KB.Using the mobile phone as a point- ing device and general interaction device has not been investigated, thus raising ques- tions regarding how the phone’s specific characteristics (e.g., options for input and output) and attributes (e.g., user data context) can be integrated into the interaction process.

For clicking on something with a laser pointer, just turn off the laser when the mouse cursor is over the item you want to click on. Turning the laser off simulates a left button, single-click.